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Amplifier Circuit patents



      

This page is updated frequently with new Amplifier Circuit-related patent applications.




Date/App# patent app List of recent Amplifier Circuit-related patents
04/07/16
20160099721 
 Analog-digital conversion  controlling the same patent thumbnailAnalog-digital conversion controlling the same
An analog-digital conversion system includes an analog-digital converter; and a preamplifier circuit which is provided in the previous stage of the analog-digital converter and differentially amplifies an input analog signal. In the preamplifier circuit, an offset voltage and/or a noise occurs and/or is mixed.
Spansion Llc


04/07/16
20160099696 
 Fixed gain amplifier circuit patent thumbnailFixed gain amplifier circuit
An instrumentation amplifier includes first and second resistors for gain setting. The operational amplifiers within the instrumentation amplifier include selectively enabled current drive sources coupled to the amplifier output.
Stmicroelectronics, Inc.


04/07/16
20160099694 
 Wide range transimpedance amplifier patent thumbnailWide range transimpedance amplifier
One aspect of this disclosure is a transimpedance amplifier circuit with multiple resistive feedback loops can be implemented with multiple kelvin sensing channels. A transimpedance amplifier and multiple kelvin sensing channels can be implemented on a single die having multiple contacts, such as pins, for connecting multiple resistors to the kelvin sensing channels.
Analog Devices, Inc.


04/07/16
20160099644 
 Voltage regulator patent thumbnailVoltage regulator
Provided is a voltage regulator in which an output current can be controlled stably and accurately to an overcurrent protection set value without the need of providing a phase compensation circuit including an element having a large area. The voltage regulator includes a constant voltage control circuit including: a first differential amplifier circuit for comparing a first reference voltage and a feedback voltage to each other; and an output transistor to be controlled by an output voltage of the first differential amplifier circuit, and an overcurrent protective circuit including: a resistor for measuring the output current; a second differential amplifier circuit for measuring a difference between voltages at both terminals of the resistor; a comparator for comparing an output voltage of the second differential amplifier circuit and a second reference voltage to each other; and a switch to be controlled by a detection signal of the comparator.
Seiko Instruments Inc.


04/07/16
20160099276 
 Image sensor with hybrid heterostructure patent thumbnailImage sensor with hybrid heterostructure
An image sensor architecture provides an snr in excess of 100 db, without requiring the use of a mechanical shutter. The circuit components for an active pixel sensor array are separated and arranged vertically in at least two different layers in a hybrid chip structure.

04/07/16
20160099037 
 Memory device with differential bit cells patent thumbnailMemory device with differential bit cells
In some examples, a memory device may be configured to utilize differential bit cells formed from two or more tunnel junctions. In some cases, the tunnel junctions forming the differential bit cell may be arranged to utilize shared read circuitry to reduce device mismatch.
Everspin Technologies, Inc.


04/07/16
20160095528 
 Circuit arrangement for suppressing common-mode interference signals during the measurement of bioelectric signals patent thumbnailCircuit arrangement for suppressing common-mode interference signals during the measurement of bioelectric signals
A differential voltage measuring system includes two electrodes that are connected to a patient at an input and make available a respective measurement contact at an output. A shunt resistor is connected in series with the second electrode.

03/31/16
20160093723 
 Insulated gate bipolar transistor amplifier circuit patent thumbnailInsulated gate bipolar transistor amplifier circuit
The present invention provides a lateral igbt transistor comprising a bipolar transistor and an ig-fet. The lateral igbt comprises a low resistive connection between the drain of the igfet and the base of the bipolar transistor, and an isolating layer arranged between the ig-fet and the bipolar transistor.
K.eklund Innovation


03/31/16
20160093655 
 Image sensor with hybrid heterostructure patent thumbnailImage sensor with hybrid heterostructure
An image sensor architecture provides an snr in excess of 100 db, without requiring the use of a mechanical shutter. The circuit components for an active pixel sensor array are separated and arranged vertically in at least two different layers in a hybrid chip structure.

03/31/16
20160093341 
 Memory device with shared amplifier circuitry patent thumbnailMemory device with shared amplifier circuitry
In some examples, a memory device may have at least a first and a second memory array. In some cases, a portion of the bit cells of the first memory array may be coupled to first pmos-follower circuitry and to second pmos-follower circuitry.
Everspin Technologies, Inc.


03/31/16
20160091909 

Soft start circuit and dc-dc voltage regulator


A voltage regulator is provided comprising: a pass transistor that includes a first node coupled to receive an input voltage and a second node coupled to provide a regulated voltage and a control node; an amplifier circuit coupled to produce a control voltage on a control line that is coupled to control a voltage at the control node of the pass transistor, based at least in part upon a reference voltage and the regulated voltage; a switch configured to transition between a first switch state in which the switch couples the control line to a turn-off voltage having a value to turn off the pass transistor and a second switch state in which the switch decouples the control line from the turn-off voltage; and a switch control circuit configured to maintain the switch in the first switch state during a first time interval while the input voltage ramps up and to transition the switch to the second switch state after the first time interval.. .
Analog Devices, Inc.


03/24/16
20160086652 

Memory device with dynamically operated reference circuits


This invention concerns a semiconductor memory device comprising: at least one sense amplifier circuit for reading data sensed from selected memory cells in a memory array, at least one reference circuit, each reference circuit being a replica of the sense amplifier circuit and having an output through which the reference circuit delivers an output physical quantity, a regulation network providing a regulation signal to each sense amplifier circuit and each reference circuit, wherein the regulation signal is derived from an averaging of the output physical quantity over time and/or space, wherein the regulation network comprises a control unit configured to sum up the physical quantities of each output of the reference circuit and a target mean value, the control unit delivering a regulation signal based on the sum, the regulation signal being fed in to each regular sense amplifier circuit and to each reference circuit.. .
Soitec


03/24/16
20160081665 

Ultrasonic probe ultrasonic imaging apparatus and controlling ultrasonic imaging apparatus


An ultrasonic probe includes a transducer circuit configured to receive ultrasonic waves reflected from an object and output an ultrasonic signal based on the ultrasonic waves; a simulated circuit having circuit characteristics substantially the same as the transducer circuit and configured to output a noise signal; and a differential amplifier circuit configured to output a voltage difference between the ultrasonic signal and the noise signal.. .
Samsung Electronics Co., Ltd.


03/17/16
20160079940 

Apparatus and methods for power amplifiers


Apparatus and methods for power amplifiers are disclosed. In one embodiment, a power amplifier circuit assembly includes a power amplifier and an impedance matching network.
Skyworks Solutions, Inc.


03/17/16
20160079046 

Multiple frequency rf amplifier, mass spectrometer including the same, and mass spectrometry mass spectrometer


Provided is a multiple frequency radio frequency (rf) amplifier. The multiple frequency rf amplifier includes a waveform generation circuit configured to generate an rf signal by amplitude and frequency-modulating a reference waveform signal, a drive amplifier circuit configured to drive-amplify the rf signal, and a power amplifier circuit configured to generate a multiple frequency rf voltage signal through a power amplification of the drive-amplified rf signal and output the multiple frequency rf voltage signal to an ion trap for a mass spectrometry..
Korea Basic Science Institute


03/10/16
20160072735 

Low voltage feedforward current assist ethernet line driver


Described examples include ethernet physical layer (phy) interface integrated circuits with transmit interface circuitry for transmitting data to an ethernet network through a magnetic interface, which includes a voltage mode first amplifier with an output that generates a first voltage signal from a supply voltage according to a data input signal. The transmit interface circuit also includes a feedforward second amplifier circuit with an output stage that operates in a first mode to generate a current signal from the supply voltage according to the first voltage signal and to provide the current signal to the first amplifier output to boost a peak voltage at the output above the supply voltage to facilitate support for higher peak signal voltage swings for 10base-t applications while using 2.5 volt or other low voltage supply levels..
Texas Instruments Incorporated


03/10/16
20160072646 

Apparatus comprising a differential amplifier circuit and an extraction circuit


An apparatus with two pairs of lines including a first and second channel further includes a phantom channel that is implemented to provide a third channel without physically installing lines. Based on a differential signal, a first common-mode signal level is generated at a first output of a differential amplifier circuit, and a second common-mode signal level on a second output, and the first common-mode signal level is applied to the lines of the first pair of lines and the second common-mode signal level to the lines of the second pair of lines.
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.


03/10/16
20160072530 

Systems and methods for performing power amplifier bias calibration


Wireless communications circuitry in an electronic device may include power amplifier circuitry that is powered using a bias voltage supplied by adjustable power supply circuitry. The power supply circuitry may include envelope tracking circuitry that continuously adjusts the bias voltage.
Apple Inc.


03/10/16
20160072458 

Detecting device and electronic apparatus


A detecting device includes a pyroelectric element that generates charge by a pyroelectric effect in a first detection terminal and a second detection terminal, a chopper amplifier circuit that generates an amplified signal in response to the charge generated in the first detection terminal and the second detection terminal by chopping, and an initialization switch that controls electrical connection between the second detection terminal and a power source for generating an initialized voltage, and the initialization switch is turned on before a start of an amplification operation by the amplifier circuit and is off during the amplification operation.. .
Seiko Epson Corporation


03/10/16
20160071572 

Semiconductor integrated circuit device


An output signal characteristic of a differential amplifier circuit is improved. When an input data signal becomes ‘low’, current flowing through a first transistor will decrease and potential at a connection (a node) between a first resistor and a second resistor will increase.
Renesas Electronics Corporation


03/10/16
20160066806 

Impedance bootstrap circuit for an interface of a monitoring device


An interface for receiving electrical signals representative of a condition of a patient and for conveying representations of the electrical signals to a processing system. The interface includes at least one amplifier circuit configured to alter an amplitude of the electrical signal, a common-mode cancellation amplifier circuit coupled to the at least one amplifier circuit and configured to reduce common-mode signal noise in the electrical signals, and a bootstrap circuit coupled to the at least one amplifier circuit and configured to increase an effective input impedance at an input of the at least one amplifier circuit..
Stryker Corporation


03/03/16
20160065216 

Integrated circuit device with programmable analog subsystem


An integrated circuit (ic) device can include a plurality of analog blocks, including at least one fixed function analog circuit, and at least one reconfigurable analog circuit block selected from: a continuous time (ct) block comprising a plurality of reconfigurable amplifier circuits and a discrete time block comprising amplifiers with a reconfigurable switch network; an analog multiplexer (mux) configured to selectively connect any of a plurality of input/outputs (i/os) of the ic device to the analog blocks, the analog mux including at least one low noise signal path pair having a lower resistance than other signal paths of the analog mux; at least one analog routing block reconfigurable to provide signal paths between any of the analog blocks; a digital section comprising digital circuits; and a processor interface coupled to the analog blocks.. .
Cypress Semiconductor Corporation


03/03/16
20160065158 

Class d amplifier circuit


This application relates to class d amplifier circuits (200). A modulator (201) controls a class d output stage (202) based on a modulator input signal (dm) to generate an output signal (vout) which is representative of an input signal (din).
Cirrus Logic International Semiconductor Ltd.


03/03/16
20160065157 

Method and gain enhancement of differential amplifier


A differential amplifier circuit and method having a feed-in network coupling an input signal to an intermediate signal. An amplifier amplifies the intermediate signal by a gain factor to output an output signal to a load network.
Realtek Semiconductor Corp.


03/03/16
20160065149 

Low noise amplifier method and apparatus


A low noise amplifier circuit including: at least a first input and first output; at least a first stage of transistor amplification having a transistor input terminal; the circuit further comprising: an input driving circuit interconnecting the first input to the transistor input terminal, the input driving circuit including a parallel resonant circuit interconnected between the transistor input terminal and ground and a series resonant circuit interconnected between the input terminal and the transistor input terminal, the input driving circuit functioning as an input matching network for the circuit in conjunction with an input bias and decoupling network.. .
Commonwealth Scientific And Industrial Research Organisation


03/03/16
20160065143 

Circuit for reducing pop noise


The invention concerns an amplifier circuit comprising: an amplifier having a first input coupled to an input node of the amplifier circuit via a first resistor and an output coupled to a load via a coupling capacitor, the output being coupled to the first input via a second resistor; and a current ramp generator adapted to supply a current ramp to the first input of the amplifier during a power up phase or power down phase of the amplifier circuit to control the rate of charge or discharge of the coupling capacitor.. .

03/03/16
20160065135 

High-frequency amplifier circuit


A high-frequency amplifier circuit comprising a first and a second amplification units connected in cascade structure and so on. The first amplification unit includes an fet of a first conductivity type having a source terminal supplied with a first potential, and a first inductor connected to an intermediate potential line, and the second amplification unit includes an fet of a second conductivity type having a source terminal supplied with a second potential, and a second inductor connected to the intermediate potential line.
Lapis Semiconductor Co., Ltd.


03/03/16
20160065134 

Asymmetric h-bridge in a class d power amplifier


Disclosed is an amplifier circuit having an output stage that includes an h-bridge circuit. The h-bridge circuit includes sense resistors on one side of the circuit.
Qualcomm Incorporated


03/03/16
20160061967 

Gamma ray detector and detecting gamma rays


In various embodiments, a gamma ray detector is provided. The gamma ray detector may include a converter element, configured to release an electron when a gamma ray moves at least partially through the converter element.
Infineon Technologies Ag


02/18/16
20160049909 

Stacked bias i-v regulation


A rf amplifier circuit including a plurality of fet devices, where a source terminal of an fet device is electrically coupled to the drain terminal of another fet device. The circuit further includes a voltage divider network and a plurality of operational amplifiers, where a separate one of the operational amplifiers is provided for each fet device.
Northrop Grumman Systems Corporation


02/18/16
20160049908 

Radio-frequency amplifier circuit and control voltage setting radio-frequency amplifier circuit


A radio-frequency amplifier circuit includes first and second fets cascode-connected to each other. The gate of the first fet is connected to a radio-frequency input terminal, and the drain of the second fet is connected to a radio-frequency output terminal.
Murata Manufacturing Co., Ltd.


02/18/16
20160047877 

Optical differential solar tracking system


A system and method of using differential optical signals to track the orientation of a solar surface or surfaces is proposed. Two dispersive prisms or gratings arranged in a mirror-symmetric fashion are used to decompose light into its constituent colors, and the gain of a differential amplifier circuit based on the difference of the frequencies of single color collimated light produced by the two prisms or gratings is used to maintain the on-sun orientation of the solar surface or surfaces.
Qbotix, Inc.


02/04/16
20160036662 

Communication visualization system


A communication visualization system includes a wireless power-feeding device for transmitting electromagnetic energy in a wireless manner and a communication visualization device for notifying that a lan cable connected to an information communication apparatus is performing information communication. The communication visualization device includes an antenna part for receiving the electromagnetic energy transmitted from the wireless power-feeding device, a rectifier circuit for rectifying the electromagnetic energy received by the antenna part to generate a dc voltage, an amplifier circuit for amplifying a communication signal transferred to the communication cable at the time of information communication by using the dc voltage generated by the rectifier circuit as operation power, a rectifier circuit for converting the amplified communication signal into a dc voltage, and a light-emitting circuit for emitting light when the dc voltage after conversion is supplied..
Hitachi Metals, Ltd.


02/04/16
20160036574 

Systems and methods for communicating into a shielded environment


A system and method for wirelessly communicating into a shielded area are described. In one particular example, a bi-directional amplifier that allows two-way communication into a tunnel is mounted at a tunnel portal and thereby allows rf signals to be exchanged therefrom using a single switched pathway.
Tunnel Radio Of America, Inc.


02/04/16
20160036398 

Voltage mode power combiner for radio frequency linear power amplifier


A radio frequency (rf) power combining amplifier circuit has a circuit input and a circuit output. A first amplifier is connected to the circuit input and to a first bias input.
Rfaxis, Inc.


02/04/16
20160036397 

Semiconductor amplifier circuit


According to one embodiment, a semiconductor amplifier circuit includes: a first amplifier circuit including first and second p-type transistors; a second amplifier circuit including first and second n-type transistors; and first to seventh current mirror circuits. The first and second current mirror circuits are connected to drains of the first and second p-type transistors.
Kabushiki Kaisha Toshiba


02/04/16
20160035402 

Unit array of a memory device, memory device, and memory system including the same


A memory device includes a memory array including a plurality of sections, each including a plurality of memory cells and at least one reference cell. The memory device may also include a plurality of sense amplifier circuits respectively corresponding to the plurality of sections, and a plurality of switch circuits, each switch circuit connected between a respective section and sense amplifier circuit.

02/04/16
20160035211 

Communication visualization device


A communication visualization device includes a transformer for converting a magnetic field caused from a lan cable connected to an information communication apparatus into electric energy at time of information communication, an amplifier circuit for amplifying the electric energy output from the transformer, a rectifier circuit for converting an amplified signal amplified by the amplifier circuit into a dc voltage, and a light-emitting circuit for emitting light when the dc voltage obtained by conversion of the rectifier circuit is supplied thereto.. .
Hitachi Metals, Ltd.


01/28/16
20160028247 

Supplying-end module for induction-type power supply system and signal analysis circuit therein


A signal analysis circuit for a supplying-end module includes a first voltage divider circuit, for attenuating a coil signal of a supplying-end coil; a first amplifier circuit, for obtaining parts of the attenuated coil signal higher than a reference voltage to output a half-wave signal; a first envelope detector, for performing envelope extraction on the half-wave signal to obtain a dc signal; a second voltage divider circuit, for attenuating the half-wave signal; a second amplifier circuit, for obtaining parts of the attenuated half-wave signal higher than the dc signal to output an amplified half-wave signal; a second envelope detector, for performing envelope extraction on the amplified half-wave signal to generate an envelope signal; a coupling capacitor, for filtering out the dc component of the envelope signal; a third voltage divider circuit, for combining the ac component of the envelope signal with a dc voltage to retrieve a trigger signal.. .
Fu Da Tong Technology Co., Ltd.


01/28/16
20160027827 

Image sensor and driving method thereof


With an image sensor in which the amplifier circuit is disposed at each pixel, there is such an issue that the threshold voltage of the transistor fluctuates so that the signal voltage fluctuates because a voltage is continuously applied between the source and the gate of the transistor at all times when using the amorphous thin film semiconductor as the transistor that constitutes an amplifier circuit. The gate-source potential of the tft that constitutes the amplifier circuit is controlled so that the gate terminal voltage becomes smaller than the source terminal voltage in an integrating period where the pixels accumulate the signals, and controlled so that the gate terminal voltage becomes larger than the source terminal voltage in a readout period where the pixels output the signals..
Nlt Technologies, Ltd.


01/14/16
20160014356 

Solid-state imaging device and driving solid-state imaging device


A solid-state imaging device includes a plurality of pixels each of which has a photoelectric conversion element and a pixel output portion and which are arranged in a column direction, a first wiring connected to the pixel output portions of the plurality of pixels, a differential amplifier circuit whose one input terminal is connected to the first wiring, a second wiring connected to the other input terminal of the differential amplifier circuit, a third wiring which is formed so as to extend in the column direction and is connected to a first pad, a plurality of switches connected between the second and third wirings, and a control unit for driving the switch at a position corresponding to the position of the pixel in which the pixel output portion is driven in association with the driving of the pixel output portion.. .
Canon Kabushiki Kaisha


01/14/16
20160013763 

Amplifier circuit, cmos inverter amplifier circuit, comparator circuit, delta-sigma analog-to-digital converter, and semiconductor device


An amplifier circuit includes a first mos transistor whose source is connected to a first power source and which amplifies a signal that is input to a gate and outputs the amplified signal from a drain, a second mos transistor whose source is connected to the first power source, and a back gate voltage control element that controls the voltage a back gate of the second mos transistor so that the voltage associated with the drain of the second mos transistor and the voltage of the gate of the second mos transistor are equal to each other, and which applies the controlled voltage to the back gate of the first mos transistor.. .
Semiconductor Technology Academic Research Center


01/14/16
20160013760 

Circuits and devices related to fast turn-on of radio-frequency amplifiers


Circuits, methods and devices are disclosed, related to fast turn-on of radio-frequency (rf) amplifiers. In some embodiments, an rf amplifier circuit includes an amplification path implemented to amplify an rf signal, where the amplification path includes a switch and an amplifier.
Skyworks Solutions, Inc.


01/14/16
20160013759 

Amplifier circuitry for envelope modulators, envelope modulators incorporating said amplifier circuitry and modulating a signal envelope


Amplifier circuitry for an envelope modulator comprising: a plurality of amplifiers for driving a load, each amplifier receiving an input representing an envelope of a signal to be amplified, and one or more charge storage devices coupled to one or more of said plurality of amplifiers. The plurality of amplifiers and charge storage device(s) receive a supply voltage v+ and the charge storage device(s) are charged to the supply voltage v+ initially.
Kabushiki Kaisha Toshiba


01/14/16
20160011254 

Compound sensor


The present invention provides a technology capable of suppressing a fault which has occurred in a certain detection element from affecting other detection units in which no fault has occurred in a compound sensor. The compound sensor includes: a plurality of detection units made up of c/v conversion circuits 321a and 321b, amplifier circuits 322a and 322b, adcs 323a and 323b, diagnosis voltage outputting dacs 327a and 327b, carrier signal generating dacs 328a and 328b and substrate voltage generating dacs 329a and 329b which are signal detection circuits provided for each of a plurality of detection elements; a power source voltage input unit 331 and a gnd voltage input unit 332 shared among each of the plurality of detection units; and overcurrent switch circuits 101a and 101b which are fault detection circuits provided for each of the plurality of detection units for detecting a fault of each detection element and stopping power supply to the detection unit in which the fault has occurred..
Hitachi Automotive Systems, Ltd.


01/07/16
20160006475 

Radio frequency tranceiver front-end device


In an rf transceiver front-end device that operates in a receiving mode, a first transformer circuit generates, based on an external rf signal received by an antenna, a first induction signal that passes through a switch unit, and that is amplified by a low noise amplifier circuit and then demodulated by a demodulation circuit to thereby generate a reception signal. When the rf transceiver front-end device is in a transmitting mode, a power amplifier circuit generates, based on a modulated signal generated by a modulation circuit through modulation of an external transmission signal, an amplified output.
National Taiwan University


01/07/16
20160006415 

Radio-frequency module


To provide a multiband-support radio-frequency module in which the occurrence of a harmonic signal in an amplifier circuit is suppressed and the output of a radio-frequency signal containing unwanted harmonic components is prevented. A first signal path sl1 and a second signal path sl2 are provided such that they intersect each other at least once in a multilayer substrate 2, as viewed from above.
Murata Manufacturing Co., Ltd.


01/07/16
20160006403 

Multistage amplifier circuit with improved settling time


Described examples include multistage amplifier circuits having first and second forward circuits, a comparator or sensor circuit coupled to sense a signal in the second forward circuit to identify nonlinear operation or slewing conditions in the multistage amplifier circuit, and one or more sample hold circuits operative according to a sensor circuit output signal to selectively maintain the amplitude of an amplifier input signal in the second forward circuit and/or in a feedback circuit in response to the sensor circuit output signal indicating nonlinear operation or slewing conditions in the multistage amplifier circuit. Certain examples further include a clamping circuit operative to selectively maintain a voltage at a terminal of a miller compensation capacitance responsive to the comparator output signal indicating nonlinear operation or slewing conditions..
Texas Instruments Incorporated


01/07/16
20160006400 

Distributed power amplifier circuit


A distributed power amplifier circuit is disclosed. The distributed power amplifier circuit comprises an amplifier arrangement comprising a plurality of sub amplifiers, each having an output port for outputting an output signal of the sub-amplifier and an output combiner network for combining the output signals from the sub amplifiers.
Telefonaktiebolaget L M Ericsson (publ)


12/31/15
20150381120 

Slew rate control boost circuits and methods


The present disclosure amplifier circuits and methods having boosted slew rates. In one embodiment, an amplifier circuit comprises an output stage comprising a first output transistor, the first output transistor comprising a gate, a source, and a drain, wherein the gate receives a signal to be amplified.
Qualcomm Incorporated


12/31/15
20150380074 

Semiconductor devices and semiconductor systems including the same


The semiconductor memory device includes a power control signal generator and a sense amplifier circuit. The power control signal generator generates a first power control signal that is enabled in response to a temperature latch signal generated in response to latching a temperature signal in a predetermined mode.
Sk Hynix Inc.


12/31/15
20150378378 

Power converter and regulating line transient response of the power converter


A power converter includes an input and an output with an energy storage circuit and a power switching circuit coupled between the input and the output. A feedback circuit generates a feedback voltage which is differentially compared to a reference in an error amplifier circuit to generate an error amplification signal.
Stmicroelectronics (shenzhen) R&d Co. Ltd


12/31/15
20150377983 

Magnetic sensor device


To provide a magnetic sensor device which maintains accuracy thereof while reducing current consumption by switching drive power of a hall element to two drive power. A magnetic sensor device is equipped with a driving circuit which supplies power to a sensor element, a switch changeover circuit which restricts the supply of the power from the driving circuit to the sensor element, a differential amplifier circuit which performs arithmetic processing on an output signal of the sensor element, a threshold voltage generating circuit which generates a threshold voltage used in magnetism determination, a comparison circuit which compares and determines a voltage of the differential amplifier circuit and the threshold voltage, and a logic circuit which according to the output of the comparison circuit, switches the power outputted from the driving circuit, switches the threshold voltage and controls on/off of the switch changeover circuit in a constant cycle..
Seiko Instruments Inc.


12/31/15
20150377941 

High frequency phase reference standard signal


A pre-characterised high frequency signal (14) is provided by means of a non-linear circuit, for example an amplifier circuit (10), fed with a first signal (12) with a component at a first, fundamental, frequency (fo). The amplifier circuit generates an output signal comprising harmonic components (14h1, 14h2, 14h3) having stable and predetermined phase relation relative to each other.
Focusmw Ip. Inc


12/24/15
20150371670 

Dual reader structure


Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack separated by a top mid-shield and a bottom mid-shield, and a pre-amplifier circuit comprising a top lead connected to the top mid-shield, configured to collect current flowing from the top mid-shield through the top sensor stack opposite a direction of current flowing from the bottom mid-shield to a bottom lead through the bottom sensor stack.. .
Seagate Technology Llc


12/17/15
20150364813 

Antenna having flexible feed structure with components


Electronic devices may include antenna structures. The antenna structures may form an antenna having first and second feeds at different locations.
Apple Inc.


12/17/15
20150362338 

Excitation signal generator for resolver


A resolver excitation signal generator includes a source configured to generate a sinusoidal input signal and an inverting amplifier circuit. The inverting amplifier circuit has an input connected to the source to receive the sinusoidal input signal and an output lacking a transistor stage.
Lear Corporation


12/10/15
20150358053 

Amplifier circuit, antenna module, and radio communication device


An amplifier circuit performs an amplification of a carrier signal received by a transmitting and receiving unit. The amplifier circuit includes an impedance matching circuit that performs matching of an impedance of the amplifier circuit when the transmitting and receiving unit and the amplifier circuit are connected.
Ricoh Company, Ltd.


12/10/15
20150358013 

Gate driving circuit


A temperature detection circuit for detecting a temperature of a switching element, a current source for causing a forward current to flow to the temperature detection circuit, an amplifier circuit for amplifying a forward voltage of the temperature detection circuit, a current adjustment circuit for adjusting a magnitude of a gate current to the switching element on the basis of an output voltage of the amplifier circuit, and a drive circuit for receiving an external signal and turning on/off the switching element, are included. The magnitude of the gate current caused to flow from the current adjustment circuit to the gate electrode of the switching element is adjusted on the basis of a change in a magnitude of the forward voltage corresponding to a change in the temperature of the temperature detection circuit..
Mitsubishi Electric Corporation


12/10/15
20150357983 

Fixed gain amplifier circuit


An instrumentation amplifier includes first and second resistors for gain setting. The operational amplifiers within the instrumentation amplifier include selectively enabled current drive sources coupled to the amplifier output.
Stmicroelectronics, Inc.


12/10/15
20150357980 

Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier


A signal processing circuit includes a chopper amplifier that has a differential amplifier circuit that amplifies differential input signals vsp(t) and vsm(t), and an adder circuit that generates an addition signal vfil(t) by addition of the chopper output signal vsub(t) that the chopper amplifier generates. Differential signals inputted into the differential amplifier circuit are interchanged for every first phase period and second phase period, and the adder circuit generates the addition signal by addition of the chopper output signal in the first phase period and in the second phase period..
Renesas Electronics Corporation


12/10/15
20150357705 

Vehicle mounted antenna device


A vehicle mounted antenna device installed on a vehicle includes a circuit board, a main element portion, and an auxiliary element portion. The main element portion, which has a substantially planar shape, is disposed on substantially the same plane as the circuit board, functions also as a capacitive antenna designed for a first frequency band, and includes a bent pattern having an antenna capacity substantially equivalent to a solid pattern.
Harada Industry Co., Ltd.


12/10/15
20150356941 

Operational amplifying circuit and liquid crystal panel drive device using the same


An operational amplifier circuit includes: a first differential amplifier section containing a p-type differential pair of p-type transistors; a second differential amplifier section containing an n-type differential pair of n-type transistors; an intermediate stage connected with outputs of the first and second differential amplifier sections and containing a first current mirror circuit of p-type transistors, and a second current mirror circuit of n-type transistors; and an output stage configured to amplify an output of the intermediate stage in power. The first differential amplifier section includes a first current source and a first capacitance between sources of the p-type transistors of the p-type differential pair and a positive side power supply voltage.
Renesas Electronics Corporation


12/10/15
20150355744 

Semiconductor device


In a display portion of a liquid crystal display device, the dead space corresponding to a unit pixel is reduced while the aperture ratio of the unit pixel is increased. One amplifier circuit portion is shared by a plurality of unit pixels, so that the area of the amplifier circuit portion corresponding to the unit pixel is reduced and the aperture ratio of the unit pixel is increased.
Semiconductor Energy Laboratory Co., Ltd.


12/10/15
20150355294 

Magnetometers


The magnetometers possess a detector part with a magnetosensitive material sensitive to the magnetic field and coil surrounding its magnetosensitive material to pick-up the magnetic field, a pulse generator circuit supplies pulse current to the magnetic material, a sample holding circuit including with an electronic switch synchronized with pulse timing for switching on/off and holding capacitance to charge electricity produced by the pickup coil during the switch on period, and an amplifier circuit amplifies the holding capacitance voltage. Magnetometers possess a buffer circuit connecting the output side of the pickup coil with the input side of the buffer circuit and connects the output side of the buffer circuit with the input side of the electronic switch to transfer the pulse signal voltage induced in the pickup coil from the input side to the output side keeping the pulse signal voltage of the outside at the same level as the inside..
Magnedesign Corporation


12/03/15
20150351131 

Cross-connected cascode low noise amplifier for carrier aggregation


An apparatus includes a first amplifier circuit and a second amplifier circuit. The first amplifier circuit has a first output coupled to a first load circuit in a multi-output mode, and the second amplifier circuit has a second output coupled to a second load circuit in the multi-output mode.
Qualcomm Incorporated


12/03/15
20150349749 

Programmable transmit continuous-time filter


A programmable-current transmit continuous-time filter (tx-ctf) system can be included in a radio frequency (rf) transmitter. The input of the tx-ctf can receive a baseband transmission signal, and the output of the tx-ctf can be provided to an upconversion mixer for conversion to rf for transmission.
Skyworks Solutions, Inc.


12/03/15
20150349737 

Input current limited power supply and audio power amplifier for high power reproduction of nondeterministic signals


A method and apparatus for amplifying audio signals without exceeding an input current limit budgeted for the audio power amplifier circuit includes an intermediate energy storage between a battery and the audio power amplifier which provides an energy reserve to support amplifying peaks where the peaks have a peak power that is greater than the power that can be drawn from the battery due to the input current limit. Speech signals, which include substantial periodic content having short peaks relative to a pitch period, can be amplified without depleting the intermediate energy storage, allowing the intermediate energy storage to recover after a peak and before occurrence of a next peak.
Motorola Solutions, Inc


12/03/15
20150349736 

Feedback amplifier


Provided herein is a feedback amplifier including an amplifier circuit configured to amplify an input signal input from an input terminal and output the amplified input signal to an output terminal; a feedback circuit configured to apply a feedback resistance value to a signal output to the output terminal, and to control a gain of the amplifier circuit by adjusting the input signal by a bias voltage applied with a feedback resistance value determined; a packet signal sensor configured to generate a fixed resistance control signal for controlling a fixed resistance value included in the feedback resistance value through a comparison between the output from the output terminal with a minimum signal level; and a fixed resistance controller configured to control the fixed resistance value included in the feedback resistance value in response to the fixed resistance control signal.. .
Electronics And Telecommunications Research Institute


12/03/15
20150349731 

Hybrid power amplifier comprising heterojunction bipolar transistors (hbts) and complementary metal oxide semiconductor (cmos) devices


A heterojunction bipolar transistor (hbt) hybrid type rf (radio frequency) power amplifier includes a first device including an input terminal for receiving an rf signal, a pre-driver stage for amplifying the received rf signal, and an output terminal, the input terminal, the pre-driver stage and the output terminal being disposed in or over a first substrate; and a second device having a main stage having an hbt amplifier circuit disposed in or over a second substrate to further amplify the rf signal amplified by the pre-driver stage. The rf signal further amplified by the main stage is output through the output terminal of the first device..
Avago Technologies General Ip (singapore) Pte. Ltd.


12/03/15
20150349729 

Amplifier circuit, bi-stage amplifier circuit, multi-stage amplifier circuit, rf-amplifier circuit, receiver section, rf-transceiver, and integrated circuit


The present invention also relates to a bi-stage amplifier circuit, and to a multi-stage amplifier circuit comprising a cascade of a number of amplifier circuits complying to the present invention, the multi-stage amplifier circuit having a gain control logic prepared to control a gain of at least one of the amplifier circuits.. .

12/03/15
20150349728 

Current-voltage conversion amplifier circuit including multiplier and multi input amplifier


Provided is a current-voltage conversion amplifier circuit including: a plurality of light receiving devices generating a current signal proportional to an amount of light by receiving the light; multipliers amplifying the current signal, converting the amplified current signal into a first voltage signal, outputting the amplified current signal, or outputting the converted first voltage signal; multi input amplifiers outputting first and second output voltage pairs through a process for receiving output values of multipliers and an offset voltage and amplifying the received output values and offset voltage; a multiplexing unit selecting and outputting one first and second output voltage pair among the first and second output voltage pairs outputted from multi input amplifiers; and a signal conversion unit converting a difference value between first and second output voltages outputted from the multiplexing unit and outputting the converted digital signal.. .
Electronics And Telecommunication Research Institute


12/03/15
20150349723 

Hybrid power amplifier having electrical and thermal conduction path


A heterojunction bipolar transistor (hbt) hybrid type rf (radio frequency) power amplifier includes a first device including an input terminal for receiving an rf signal, a pre-driver stage for amplifying the received rf signal, and an output terminal, the input terminal, the pre-driver stage and the output terminal being disposed in or over a first substrate; and a second device having a main stage having an hbt amplifier circuit disposed in or over a second substrate to further amplify the rf signal amplified by the pre-driver stage. The rf signal further amplified by the main stage is output through the output terminal of the first device..
Avago Technologies General Ip (singapore) Pte. Ltd .


12/03/15
20150349719 

Doherty power amplifier apparatus


Disclosed is a doherty power amplifier apparatus, including: a drive amplifier circuit, a power splitter circuit and a power combiner circuit, wherein the power splittercircuit is connected to the drive amplifier circuit, the apparatus further comprising: a carrier amplifier circuit and a peak amplifier circuit connected in parallel between the power splitter circuit and the power combiner circuit, wherein the carrier amplifier circuit comprises one or more parallel carrier amplification branches, wherein each carrier amplification branch comprises a multi-stage carrier amplifier apparatus, the multi-stage carrier amplifier apparatus is used for achieving multi-stage carrier amplification; and the peak amplifier circuit comprises one or more parallel peak amplification branches, wherein each peak amplification branch comprises a multi-stage peak amplifier apparatus, the multi-stage peak amplifier apparatus is used for achieving multi-stage peak amplification.. .
Zte Corporation


12/03/15
20150349717 

Amplifier circuit with improved accuracy


An amplifier circuit with improved accuracy is provided that comprises a cascade of amplifier stages, a control line for controlling the amplifier stages, a feedback circuit having an input port for receiving a reference signal, and a feedback loop connecting the feedback circuit to the control line. Via the feedback circuit and the feedback loop, the large signal behavior of the amplifier stage is accurately fixed.
Qualcomm Technologies, Inc.


12/03/15
20150348621 

Nonvolatile semiconductor memory device and read method thereof


This nonvolatile semiconductor memory device comprises a memory cell array configured having a plurality of nand cell units arranged therein, each of the nand cell units being configured having a plurality of memory cells connected in series therein. A bit line is connected to one end of the nand cell unit, and a source line is connected to the other end of the nand cell unit.
Kabushiki Kaisha Toshiba


12/03/15
20150348611 

Semiconductor devices and semiconductor systems including the same


A semiconductor memory device may include a power control signal generator and a sense amplifier circuit. The power control signal generator may generate a first power control signal, the first power control signal having an enablement period that may be controlled in response to a temperature signal having a cycle time.
Sk Hynix Inc.


12/03/15
20150348602 

Sense amplifier circuit


A sense amplifier circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a first resistive device, a second resistive device, a fifth transistor and a sixth transistor. A gate of the first transistor is coupled to a drain of the fourth transistor.
Taiwan Semiconductor Manufacturing Company, Ltd.


11/26/15
20150341064 

A receiver circuit


A receiver circuit comprising first and second antennas; an input amplification stage comprising first and second input amplifier circuits for amplifying first and second signals received at the first and second antennas respectively; a switching stage comprising first and second transconductance components connected respectively to the first and second input amplifier circuits and to a common output, and a switching mechanism arranged to selectively turn on and off the first and second transconductance components so that only one of the first and second transconductance components is in an on state at any time, the first and second transconductance components further amplifying the first and second signals respectively when in an on state; and an output amplification stage connected to the common output of the switching stage and comprising an output amplifier circuit for further amplifying the first and second signals when they are outputted via the common output.. .
The University Of Melbourne


11/26/15
20150340993 

Circuitry


Trans-impedance amplifier circuitry having an amplifier; a feedback resistor arranged between an output of the amplifier and an input of the amplifier; and at least one further resistor arranged physically parallel to the feedback resistor.. .
Hilight Semiconductor Limited


11/26/15
20150338432 

Inertia sensor


An inertia sensor includes a sensor element including first and second sensing parts configured to output first and second sensing signals, an amplifier having an input port to which the first sensing signal or the second sensing signal is selectively input, a feedback circuit unit configured to be connected between the input port and the output port of the amplifier to be connected in parallel to the amplifier, a first switching element provided between the first sensing part and the amplifier, a second switching element provided between the first sensing part and the feedback circuit unit, a third switching element provided between the second sensing part and the amplifier, and a fourth switching element provided between the second sensing part and the feedback circuit unit. This inertia sensor, stabilizes output characteristics of the amplifier circuit, and suppresses generation of unwanted signals..
Panasonic Intellectual Property Management Co., Ltd.


11/19/15
20150333708 

Class-d amplifier


In a class-d amplifier, oscillation phenomenon is suppressed in a high rf range and surge voltage is reduced. An oscillation absorption circuit is connected on the power supply side of the class-d amplifier circuit, and the class-d amplifier circuit and thus connected oscillation absorption circuit equivalently configure an oscillation circuit.
Kyosan Electric Mfg. Co., Ltd.


11/19/15
20150333706 

Radio frequency power amplifier circuit


An rf power amplifier circuit has an input terminal for receiving an input signal having an input power, and an output terminal for outputting an output signal. The rf power amplifier circuit comprises three amplifier stages and an input power splitter for providing respective power fraction signals to respective inputs of each amplifier stage.
Freescale Semiconductor, Inc.


11/19/15
20150333534 

Low power nanoelectronics


Disclosed are low power electronic devices configured to exploit the sub-threshold swing, unidirectional tunneling, and low-voltage operation of steep slope-tunnel tunnel field-effect transistors (tfet) to improve power-conversion efficiency and power-efficiency of electrical systems incorporating the tfet as an electrical component to perform energy harvesting, signal processing, and related operations. The devices include a htfet-based rectifier having various topologies, a htfet-based dc-dc charge pump converter, a htfet-based amplifier having an amplifier circuit including a telescopic operational transconductance amplifier, and a htfet-based sar a/d converter having a htfet-based transmission gate dff.
The Penn State Research Foundation


11/19/15
20150332741 

Sense amplifier circuit and semiconductor memory device


To improve reading accuracy of a sense amplifier circuit and a semiconductor memory device. A sense amplifier circuit includes an n type fet which is a sensing transistor connected between a power supply and a ground via a data line that extends to a memory cell, a resistance element that is connected between a gate of the sensing transistor and the power supply, and a capacitance element that is connected between the gate of the sensing transistor and the ground..
Renesas Electronics Corporation


11/12/15
20150326106 

Soft start circuit for switching converter and associated soft start method


A soft start circuit for a switching converter, the soft start circuit has an internal soft start voltage generating circuit, an amplifier circuit and a buffer circuit, the internal soft start voltage generating circuit provides an internal soft start voltage, the amplifier circuit has a first input terminal receiving the internal soft start voltage, a second input terminal receiving a soft start reference signal and an output terminal, the buffer circuit has an input terminal coupled to the output terminal of the amplifier circuit and an output terminal providing the soft start reference signal. An external soft start capacitor coupled to the output terminal of the amplifier circuit is charged to provide an external soft start voltage, and the soft start reference signal is provided based on the internal soft start voltage and the external soft start voltage..
Chengdu Monolithic Power Systems Co., Ltd.


11/12/15
20150323964 

Rf power amplifier with linearity control


A linear amplifier circuit includes a multi-stage power amplifier that can amplify an input signal to produce an output signal, and a gain feedback control circuit coupled with the output and the input of the multi-stage power amplifier. An adjacent-channel leakage feedback control circuit can detect the output signal at the output of the multi-stage power amplifier and reduce adjacent-channel leakage in the output signal over an output power range based on the detected output signal..
Micro Mobio Corporation


11/12/15
20150323944 

Current modulation circuit


A modulated digital input signal is passed through a conditioning circuit to generate a first input signal. An error amplifier circuit receives the first input signal and a second input signal, and controls the operation of a mos transistor to generate an output signal that is current modulated.
Stmicroelectronics S.r.l.


11/12/15
20150323569 

High frequency voltage supply monitor


Various aspects provide a high frequency voltage supply monitor capable of monitoring high frequency variations of the voltage supply inside a microelectronic circuit substantially in real time. The voltage supply monitor can comprise a differential amplifier circuit having a substantially constant gain over a wide bandwidth, allowing the supply voltage variations to be amplified according to a known gain under a wide range of conditions.
Applied Micro Circuits Corporation


11/05/15
20150318850 

Switching element drive circuit, power module, and automobile


A switching element drive circuit of the present invention outputs a voltage to the switching element by use of a voltage output unit configured as an amplifier circuit having a voltage amplification factor of 1 to drive the switching element. When the switching element is turned on, a turn-on voltage having a value higher than a threshold voltage of the switching element and lower than a value of a voltage of a power supply of the switching element drive circuit is provided to the voltage output unit.
Mitsubishi Electric Corporation


11/05/15
20150318829 

Low noise amplifier for mems capacitive transducers


This application relates to amplifier circuitry for amplifying a signal from a mems transducer. A super source follower circuit (40) is provided which includes a feedback path from its output node (nout) to a control bias node (bc) in order to provide a preamplifier signal gain that may be greater than unity.
Cirrus Logic International Semiconductor Ltd.


11/05/15
20150318828 

A quasi-broadband amplifier according to the doherty principle


An amplifier comprises a first amplifier circuit, a second amplifier circuit, a hybrid-coupler circuit and a termination. The hybrid-coupler circuit comprises an output port and an isolation port.
Rohde & Schwarz Gmbh & Co. Kg




Amplifier Circuit topics: Amplifier Circuit, Semiconductor, Differential Amplifier Circuit, Differential Amplifier, Memory Cells, Semiconductor Device, Memory Cell, Semiconductor Substrate, Photodiode, Signal Processing, Memory Effect, Electronic Device, Electrical Signal, Storage Device, Communications

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