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Amplifier Circuit patents



      
           
This page is updated frequently with new Amplifier Circuit-related patent applications. Subscribe to the Amplifier Circuit RSS feed to automatically get the update: related Amplifier RSS feeds. RSS updates for this page: Amplifier Circuit RSS RSS


Bandpass filter

Bandpass filter

Amplifier circuit

Fujitsu Limited

Amplifier circuit

Amplifier circuit

Renesas Electronics

Semiconductor device and power supply device


Date/App# patent app List of recent Amplifier Circuit-related patents
08/20/15
20150237276 
 Image sensor array with external charge detection circuitry patent thumbnailImage sensor array with external charge detection circuitry
An image sensor may include an array of pixels that, do not include any source follower, reset, or addressing transistors, which helps to increase pixel well capacity, reduces or eliminates random telegraph signal (rts) noise, and reduces undesirable dark current. Charge to voltage conversion may be performed by charge detection circuitry that is external to the array of pixels.
Semiconductor Components Industries, Llc


08/20/15
20150236667 
 Bandpass filter patent thumbnailBandpass filter
A bandpass filter is provided that prevents clock leakage to the input side of an amplifier circuit and has excellent out-of-passband signal attenuation. It includes an amplifier (102) connected between an input terminal and an output terminal, an impedance frequency conversion circuit (101) that is connected between an output of the amplifier and ground and changes impedance depending on whether or not the frequency of a signal output from the amplifier is within a predetermine passband, and a feedback circuit (103) connected between the output and an input of the amplifier..

08/20/15
20150236657 
 Amplifier circuit patent thumbnailAmplifier circuit
An amplifier circuit has a plurality of amplifiers configured to be connected in series, and each of the plurality of amplifiers has an amplifying element configured to non-inverting amplify a signal and a phase adjustment element configured to be connected to an output terminal of the amplifying element and to adjust a phase of the signal, wherein the amplifying element is subjected to negative feedback, and wherein a stability coefficient of a circuit in which the amplifying elements of the number the same as the number of the plurality of amplifiers are connected in series is less than 1.. .
Fujitsu Limited


08/13/15
20150230304 
 Semiconductor device and power supply device patent thumbnailSemiconductor device and power supply device
A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a pfc circuit.
Renesas Electronics Corporation


08/13/15
20150229346 
 Amplifier circuit, antenna module and wireless communication apparatus patent thumbnailAmplifier circuit, antenna module and wireless communication apparatus
An amplifier circuit that amplifies a carrier wave that a transmitting and receiving part has received, and includes a superimposition wave generation part that generates a superimposition wave to be superimposed onto the carrier wave; an amplifying part that adds the carrier wave and the superimposition wave to obtain an amplified carrier wave and outputs the amplified carrier wave; and an amplitude detection part that detects, based on a change in an amplitude value of the carrier wave, that the carrier wave is a predetermined carrier wave that carries a predetermined communication signal. The amplifier circuit outputs the amplified carrier wave when having detected the predetermined carrier wave..
Ricoh Company, Ltd.


08/13/15
20150229279 
 Transmitter with predistorter patent thumbnailTransmitter with predistorter
A power amplifier circuit includes an amplifier mosfet and a predistorter mosfet. The predistorter mosfet source and drain are connected together, and the predistorter mosfet is connected between the gate of the amplifier mosfet and a second bias voltage signal.
Skyworks Solutions, Inc.


08/13/15
20150229277 
 Cancellation of distortion induced by elevated op-amp bias current patent thumbnailCancellation of distortion induced by elevated op-amp bias current
An operational amplifier circuit reduces signal distortion in switching circuits resulting from flow of bias current through an analog switch having a resistance that changes with a common mode voltage level. The circuit includes an operational amplifier, and first, second, and third switches monolithically integrated on a same integrated circuit substrate.
Linear Technology Corporation


08/13/15
20150229253 
 Fan control circuit patent thumbnailFan control circuit
The present invention is to provide a fan control circuit, which includes a filter circuit for converting a pulse-width modulation (pwm) voltage signal into a dc voltage signal; an amplifier circuit having an input end for receiving the dc voltage signal and a static voltage signal and generating an amplified voltage signal at an output end thereof; a current expansion circuit configured to perform current expansion on the amplified voltage signal and thereby generate a driving voltage signal for a fan; and a feedback circuit connected between another input end of the amplifier circuit and an output end of the current expansion circuit so that magnitude of the driving voltage signal is in direct proportion to the duty cycle of the pwm voltage signal and is greater than or equal to a lowest driving voltage value of the fan when the duty cycle of the pwm voltage signal approaches zero.. .
Alpha Networks Inc.


08/13/15
20150229212 
 Switching regulator and control method thereof patent thumbnailSwitching regulator and control method thereof
A switching regulator including an output switch element; a rectification switch element; an oscillation circuit; an error amplifier circuit; a slope circuit; a first voltage comparison circuit; a second voltage comparison circuit; a one pulse generation circuit; a control circuit; and a backflow detection circuit, and a control method thereof suppress variations to be stabilized with respect to a target value of the load current for switching between a pwm control and a pfm control, and ensure the switching from the pfm control to the pwm control or from the pwm control to the pfm control even if various parameters including external elements such as chips, coils, and capacitors vary.. .
Ricoh Electronic Devices Co., Ltd.


08/13/15
20150229210 
 Dc/dc converter and electronic apparatus patent thumbnailDc/dc converter and electronic apparatus
To provide a dc/dc converter equipped with a clamp circuit having low power consumption, and reducible in chip area. A clamp circuit which clamps an output terminal of an error amplifier circuit equipped with an amplifier and a first transistor connected to an output terminal of the amplifier is configured to include a second transistor having a source connected to a source of the first transistor, a gate connected to a constant voltage circuit, and a drain connected to a constant current circuit, and a third transistor having a gate connected to the drain of the second transistor and a drain connected to the output of the amplifier..
Seiko Instruments Inc.


08/13/15
20150228322 

Nmos-offset canceling current-latched sense amplifier


A resistive memory sensing method includes sensing outputs of an offset-cancelling dual stage sensing circuit (ocds-sc) by an nmos offset-cancelling current latched sense amplifier circuit (noc-clsa). The noc-clsa is configured with a reduced input capacitance and a reduced offset voltage.
Qualcomm Incorporated


08/06/15
20150222831 

Imaging apparatus and imaging system


An ad converting unit compares an output signal from an amplifier circuit after reset of a pixel with a reference signal of time-variable, outputs a first digital value, when the output signal from the amplifier circuit in a non-reset state of the pixel is larger than a threshold, sets a gain of the amplifier circuit to a first gain, when the output signal is smaller than the threshold, sets the gain of the amplifier circuit to a second gain larger than the first gain, further after the gain of the amplifier circuit was set to the first or second gain, compares the output signal from the amplifier circuit in the non-reset state of the pixel with the reference signal of time-variable, and outputs a second digital value. When resolutions of the first and second digital values differ, a correcting unit corrects a difference between the resolutions..
Canon Kabushiki Kaisha


08/06/15
20150220484 

Memristor linear modeling switched reluctance motor


A memristor linear modeling method for a switched reluctance motor. A non-inverting operational amplifier circuit and an inverting operational amplifier circuit are employed to construct a switched reluctance motor linear phase inductance characteristic element..
China University Of Mining And Technology


08/06/15
20150220096 

Semiconductor structures for enhanced transient response in low dropout (ldo) voltage regulators


Systems, semiconductor structures, electronic circuits and methods for enhanced transient response in low dropout (ldo) voltage regulators are disclosed. For example, a semiconductor structure for enhanced transient response in an ldo voltage regulator is disclosed, which includes a first current mirror circuit coupled to an input connection and an output connection of the ldo voltage regulator, a second current mirror circuit coupled to the input connection of the ldo voltage regulator.
Intersil Americas Llc


07/30/15
20150214838 

Voltage regulator


To provide a voltage regulator capable of preventing a reduction in output voltage and an increase in output noise in a steady state without performing suppression of an overshoot. A voltage regulator is equipped with an overshoot detection circuit which detects an overshoot on the basis of an output voltage, an overshoot suppression circuit which controls an output terminal of an error amplifier circuit, based on the output of the overshoot detection circuit, and a driver state discrimination circuit which discriminates the state of an output transistor, based on an output voltage of the error amplifier circuit.
Seiko Instruments Inc.


07/30/15
20150212166 

Magnetoresistive sensor and gradiometer


An object of the invention is to reduce 1/f noise and white noise at the same time by integrally reducing noise of an mr sensor and noise of an operation circuit part. A magnetoresistive sensor according to the invention includes a plurality of magnetoresistive sensor parts each having a bridge circuit in which four magnetoresistive elements are connected, and outputs of the respective magnetoresistive sensor parts are connected in parallel to one another to an input of an amplifier circuit (see fig.
Hitachi, Ltd.


07/30/15
20150209097 

Surgical cutting device


A surgical knife has been developed. The knife includes a blade with an edge that contacts tissue of a patient and a differential amplifier circuit that provides a signal of voltage and current to the blade at a certain frequency and waveform.

07/23/15
20150207469 

Preamplifier, optical receiver, optical termination device, and optical communication system


A current bypass circuit that passes part of a photocurrent output from a photodetector is connected to an input terminal of a current-to-voltage conversion amplifier circuit. A voltage obtained by level conversion of an output voltage by a voltage level conversion circuit is input into the current bypass circuit so that the current bypass circuit is turned on at a photocurrent that is smaller than the photocurrent at which a diode connected in parallel to a feedback resistor of the current-to-voltage conversion amplifier circuit is turned on.
Mitsubishi Electric Corporation


07/23/15
20150207468 

Amplifier circuit


Provided is an amplifier circuit including an nmos transistor having a low drain breakdown voltage and an nmos transistor having a high drain breakdown voltage connected in series thereto, and capable of preventing breakdown of a drain of the nmos transistor having a low drain breakdown voltage. A clamp circuit configured to limit a drain voltage of the nmos transistor having a low drain breakdown voltage is connected to the drain thereof..
Seiko Instruments Inc.


07/23/15
20150205315 

Voltage regulator


Provided is a voltage regulator capable of preventing breakdown of a gate of an input transistor even when an overshoot occurs at an output terminal. The voltage regulator includes a diode, which is provided to an input transistor to which a divided voltage of an error amplifier circuit is input.
Seiko Instruments Inc.


07/16/15
20150200690 

Inter carrier-aggregation isolation in a receiver


A device includes a first amplifier circuit coupled to a first transformer and a second transformer, the first transformer selectively coupled to a first shared power distribution network through a first switch, the second transformer selectively coupled to a second shared power distribution network through a second switch.. .
Qualcomm Incorporated


07/16/15
20150200636 

Amplifier circuit, a/d converter, and communication apparatus


An amplifier circuit according to one embodiment includes an input terminal, an output terminal, an amplifier, a first switch, and a first signal setter. An input side of the amplifier is connected to the input terminal and an output side is connected to the output terminal.
Kabushiki Kaisha Toshiba


07/16/15
20150200630 

Method and adjusting peak power capability


One of the embodiments of the present disclosure relates to a method for adjusting peak power capability of a power amplifier circuitry. The power amplifier circuitry comprises at least one main amplifier path and at least one peak amplifier path and is configured to output a signal combining amplified signals from the at least one main amplifier path and the at least one peak amplifier path.

07/16/15
20150200629 

Guitar amplifier circuitry


Amplifier circuitry that is operative to provide selective control of the amplitude of a musical signal as the signal transitions from the pre-amplifier to power amplifier components of an electric guitar amplifier. According to a preferred embodiment, at least one low variable power amplifier is integrated into the signal path from the pre-amplifier to the power amplifier components of the guitar amplifier.
Bad Cat Holdings, Llc


07/16/15
20150198559 

Functionalized nanopipette biosensor


Disclosed are methods and devices for biomolecular detection, comprising a nanopipette, exemplified as a hollow inert, non-biological structure with a conical tip opening of nanoscale dimensions, suitable for holding an electrolyte solution which may contain an analyte such as a protein biomolecule to be detected as it is passed through the tip opening. Biomolecules are detected by specific reaction with peptide ligands chemically immobilized in the vicinity of the tip.
The Regents Of The University Of California


07/09/15
20150194937 

Amplifier circuit


According to embodiments of the present invention, an over-input signal may be limited to be within a range between adjustable upper limit voltage and lower limit voltage while suppressing deterioration of a noise figure. An amplifier circuit includes an input transistor; an input transistor; a resistor element having a first terminal connected to a gate of the input transistor and a second terminal connected to a bias voltage; and a protective circuit connected to the gate of the input transistor and limiting an input to the gate of the input transistor to be within a range between an upper limit voltage and lower limit voltage adjustable based on the bias voltage..
Samsung Electro-mechanics Co., Ltd.


07/09/15
20150194456 

Image 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.
Altasens, Inc.


07/09/15
20150194115 

Output circuit, data driver, and display device


A display device includes an output circuit including a differential amplifier circuit, an output amplifier circuit that includes a first transistor of the first conduction type coupled between the first supply terminal and the output terminal, and including a control terminal coupled to the differential amplifier circuit, a first control circuit, an input terminal, an output terminal, and first to third supply terminals to which first to third supply voltages are applied, wherein the third supply voltage is set to a voltage between the first supply voltage and the second supply voltage, or the second supply voltage, and wherein the first control circuit includes a third transistor and a first switch which are coupled in series between the first supply terminal and the control terminal of the first transistor.. .
Renesas Electronics Corporation


07/02/15
20150188497 

Audio amplifier


The embodiments described herein relate to amplifier circuits with power rails. The power rails are generated in response to an input signal, which will typically be an audio signal, and with a sufficient magnitude to power the amplifier and to generate an output signal corresponding to the input signal..
Audera Acoustics Inc.


07/02/15
20150188423 

Voltage regulator and electronic apparatus


A voltage regulator is provided which can suppress an occurrence of overshooting in an output voltage at the time of starting a power source with a source voltage or the like. The voltage regulator includes an error amplifier circuit, an overshooting control circuit that is connected to the gate of an output transistor, and an on/off circuit that controls on and off states of at least the error amplifier circuit.
Seiko Instruments Inc.


07/02/15
20150187423 

Input buffer for semiconductor memory device and flash memory device including the same


An input buffer includes an amplifier circuit configured to amplify an input signal and output an amplified signal to a first output node. The input signal is amplified according to a first bias voltage set, at a bias node, to a first level based on a power supply voltage and a reference voltage.
Samsung Electronics Co., Ltd.


06/25/15
20150180428 

Enhanced and versatile n-way doherty power amplifier


The output of a carrier amplifier circuit in a doherty amplifier is coupled to the summing node so that the impedance observed by the carrier amplifier's output is approximately equal to the load impedance at the combining node when the load impedance is not modulated. In an example non-inverting configuration, a power amplifier circuit is configured to provide an amplified signal to a load at a summing node, where the load has a first impedance when not load-modulated.
Telefonaktiebolaget L M Ericsson (publ)


06/25/15
20150180426 

Adaptive receiver/transmitter amplifier circuit


A smart amplifier circuit is disclosed. The amplifier circuit comprises a processor configured to receive a state control signal and generate a plurality of control signals, a power amplifier configured to provide an amplified rf signal that is a function of the rf input signal and the first control signal, and a tunable matching network configured to receive a second control signal and to provide a tuned, amplified rf output signal as an output that is a function of the amplified rf signal and the second control..
Auriga Measurement Systems, Llc


06/25/15
20150174896 

Ink jet recording device and short circuit protection ink jet recording device


An ink jet recording device comprises: an ink jet recording head for discharging an ink droplet; and a recording control part for outputting a drive signal to cause the ink jet recording head to discharge en ink droplet, wherein the recording control part includes a current amplifier circuit for amplifying a drive signal by active elements connected in multi-stages, and the current amplifier circuit includes a current interruption element connected to an input side of the active element of the current amplifier circuit on a power source side, the current interruption element being for preventing damage of the active element due to an overcurrent from occurring when a short circuit of the drive signal is generated.. .
Ricoh Company, Ltd.


06/18/15
20150171808 

Small signal amplifier circuit


A signal amplifier circuit may include a bias circuit unit generating a first bias voltage, a level shifting circuit unit shifting a level of an input alternating current (ac) signal by an amount equal to a predetermined direct current (dc) shifting voltage so as to provide a first signal, and a first amplification unit amplifying a difference signal between the first bias voltage and the first signal, the first bias voltage and the dc shifting voltage being generated by circuits having the same characteristics.. .
Samsung Electro-mechanics Co., Ltd.


06/18/15
20150171731 

Voltage regulator


Provided is a voltage regulator configured to suppress a variation of an output voltage so as to stably operate even when a power supply voltage varies. The voltage regulator includes a control circuit having an input terminal connected to a drain of an output transistor, and an output terminal connected to an error amplifier circuit.
Seiko Instruments Inc.


06/18/15
20150170718 

Sense amplifier circuit capable of determining amplification factor of cell current based on operation cycles


A sense amplifier circuit may be used for read operation of a non-volatile memory. The sense amplifier circuit includes of a first pre-charge circuit, a second pre-charge circuit, a bias circuit, an enable circuit, a current mirror, a first comparator, a second comparator, a buffer and a counter.
United Microelectronics Corp.


06/11/15
20150162885 

Amplifier circuit and amplifying a signal in an amplifier circuit


An amplifier circuit, comprising: an input, for receiving an input signal to be amplified; a power amplifier, for amplifying the input signal; a switched power supply, having a switching frequency, for providing at least one supply voltage to the power amplifier; and a dither block, for dithering the switching frequency of the switched power supply. The dither block is controlled based on the input signal.
Cirrus Logic International (uk) Limited


06/11/15
20150162883 

Amplifier circuit


The present disclosure relates to an amplifier circuit (2) for a capacitive transducer (1), comprising a preamplifier (8) adapted to receive a transducer signal through an input node (9) and to provide an amplified signal at an output node (10), and a transconductance amplifier (11) comprising a first input (12) and an output (14), wherein the first input (12) of the transconductance amplifier (11) is connected to the output node (10), and the output (14) of the transconductance amplifier (11) is connected to the input node (9).. .
Epcos Ag


06/11/15
20150162882 

Power amplifier with wide band am-am feedback and digital pre-distortion


A system including an amplifier circuit configured to amplify an input and generate an output, a bias circuit configured to bias the amplifier circuit, and a feedback circuit configured to generate feedback based on the input and the output, and to adjust the bias of the amplifier circuit based on the feedback to reduce amplitude nonlinearity in the output. A digital pre-distortion circuit is configured to reduce phase nonlinearity in the output..
Marvell World Trade Ltd.


06/11/15
20150162876 

Amplifier circuit with cross wiring of direct-current signals and microwave signals


Provided is an amplifier circuit with cross wiring of direct-current signals and microwave signals, which includes: two branch sub-circuits being mirrors with each other and a third capacitor the sub-circuit includes a direct-current feeding circuit and a microwave signal circuit. The direct-current feeding circuit further comprising: a transistor core drain power-up port (vds) of a heterojunction field effect transistor (fet), a first micro-strip inductor, a first capacitor, a pair of third inductors, a pair of branched second inductors.
China Electronics Technology Group Corporation No.55 Research Institute


06/04/15
20150155879 

Semiconductor integrated circuit and image sensor circuit


The semiconductor integrated circuit includes a first converting circuit that receives the input analog signal, analog-to-digital converts the input analog signal and outputs a resulting first digital signal. The semiconductor integrated circuit includes an amplifier circuit that receives a reference analog signal, which is obtained by the first converting circuit digital-to-analog converting the first digital signal, and the input analog signal and outputs an amplified signal responsive to the difference between the reference analog signal and the input analog signal.
Kabushiki Kaisha Toshiba


06/04/15
20150155833 

Signal amplifier with active power management


A system for amplifying a signal with active power management according to one embodiment includes a first digital to analog converter (dac) circuit configured to provide a modulated carrier signal; a amplifier circuit coupled to the first dac, where the amplifier circuit is configured to amplify the modulated carrier signal; an output stage circuit coupled to the amplifier circuit, where the output stage circuit is configured to provide the amplified signal to a network; a second dac circuit configured to provide a full wave rectified envelope of the modulated carrier signal; and a switching regulator circuit including a voltage reference input coupled to the second dac circuit, where the switching regulator circuit is configured to provide a supply voltage to the output stage circuit and the supply voltage is modulated in response to the envelope received at the voltage reference input.. .
Intel Corporation


06/04/15
20150155014 

Memory circuitry including read voltage boost


Memory circuitry 2 includes an array 4 of bit cells 6. One or more boost capacitors c1, c2 are connected to bit lines 8 running through the array 4 and serve to store a sample charge with a sample voltage difference during a sampling configuration of the boost capacitors c1, c2.
The Regents Of The University Of Michigan


06/04/15
20150153303 

System for detecting electrical properties of a molecular complex


A system for detecting electrical properties of a molecular complex is disclosed. The system includes an electrode electrically coupled to a molecular complex that outputs an electrical signal affected by an electrical property of the molecular complex, wherein the effect of the electrical property of the molecular complex on the electrical signal is characterized by an expected bandwidth.
Genia Technologies, Inc.


06/04/15
20150150753 

Instrumentation absolute value differential amplifier circuit and applications


An instrumentation absolute value differential amplifier (212) is used as part of an electroencephalogram, electromyogram or electrocardiogram to quantify the excitation state of a user, processing and transmitting this information as a control signal for a user feedback device. In one embodiment, this feedback device comprises a wireless sex toy (500) which responds to the sent control information, acting as a mind-controlled sex toy.

05/28/15
20150146475 

Memory sense amplifier with multiple modes of operation


Memory circuitry comprising an array of 6t bit cells 6 in which columns of bit cells are coupled together via bit line pairs 8 connected to respective sense amplifier circuitry 10 is provided. The sense amplifier circuitry includes an inverter pair 12, 14 and control circuitry which is configured to control the sense amplifier circuitry to operate in a plurality of modes including an offset compensation mode, an amplification mode and a latching mode..
The Regents Of The University Of Michigan


05/28/15
20150145725 

Navigation device and control reducing power consumption thereof


A navigation device includes an antenna to receive a satellite signal, a control unit to control provision of the satellite signal, an amplifier circuit for amplification of the satellite signal, and a positioning unit to position the navigation device based upon the satellite signal. When the navigation device has been successfully positioned, the control unit disables the amplifier circuit, and provides the satellite signal to the positioning unit for position calculation..
Mitac International Corp.


05/28/15
20150145611 

Oscillator circuit, oscillator, electronic apparatus, and moving object


An oscillator circuit includes an oscillating amplifier circuit to which an oscillator element is connected, and which generates an oscillation signal, and a plurality of mos type variable capacitance elements each having two terminals, one of which is electrically connected to the oscillating amplifier circuit, the mos type variable capacitance elements have respective threshold voltages different from each other, a control voltage is applied to one of the terminals of each of the mos type variable capacitance elements, and a reference voltage is applied to the other of the terminals of each of the mos type variable capacitance elements. It is also possible for the mos type variable capacitance elements to be different from each other in dope amount of impurities to a semiconductor layer below a gate electrode..
Seiko Epson Corporation


05/28/15
20150145609 

Clock signal generation circuit, detection device, sensor, electronic apparatus, and moving object


A clock signal generation circuit includes a cr oscillator circuit having a capacitor, a resistor, and an amplifier circuit, and a voltage generation circuit adapted to generate a power supply voltage, and then supply the cr oscillator circuit 170 with the power supply voltage vdos. An oscillation frequency of the cr oscillator circuit in a case in which a power supply voltage vddl is a fixed voltage has a positive temperature characteristic.
Seiko Epson Corporation


05/28/15
20150145604 

High efficiency radio frequency power amplifier circuitry with reduced distortion


Radio frequency power amplifier circuitry includes an amplifier element, power supply modulation circuitry, and bias modulation circuitry. The amplifier element is configured to amplify an rf input signal using a modulated power supply signal and a modulated bias signal to produce an rf output signal.
Rf Micro Devices, Inc.


05/28/15
20150145598 

Amplifier circuit


An amplifier circuit with at least one basic transistor, at least one load transistor, and at least one impedance element, the basic transistor being connected to the impedance element and the load transistor, an amplifier input and output, the amplifier input being connected to the gate contact of the basic transistor and the amplifier output being connected to a source contact of the load transistor. Here the amplifier circuit has at least two combined amplifying cells, with each combined amplifying cell respectively including a basic transistor, a load transistor, and an impedance element, with the basic transistor and the load transistor being non-complementary single-pin transistors, and arranged cooperating with the impedance element, and every combined amplifying cell has an input and an output, which cell input being connected to a gate contact of the basic transistor and which cell output being connected to a contact of the impedance element..
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v.


05/28/15
20150145429 

Electronic ballast circuit for lamps


An electronic ballast circuit includes a power factor correction circuit, a control and amplifier circuit, a ballast controller circuit and a ballast driver circuit. The ballast driver circuit includes a resonant circuit that connects to a lamp and a strike voltage limiter circuit that regulates the behavior of the resonant circuit.
Genesys Systems, Llc


05/28/15
20150145006 

Semiconductor device and driving the same


The semiconductor device includes a plurality of pixels arranged in rows and columns, and first transistors fewer than the number of the plurality of pixels. The plurality of pixels each includes a photodiode and an amplifier circuit.
Semiconductor Energy Laboratory Co., Ltd.


05/28/15
20150145005 

Transistor amplifier circuit and integrated circuit


Disclosed is a transistor having a first region of a first conductivity type for injecting charge carriers into the transistor and a laterally extended second region) of the first conductivity type having a portion including a contact terminal for draining said charge carriers from the transistor, wherein the first region is separated from the second region by an intermediate region of a second conductivity type defining a first p-n junction with the first region and a second p-n junction with the second region, wherein the laterally extended region separates the portion from the second p-n junction, and wherein the transistor further comprises a substrate having a doped region of the second conductivity type, said doped region being in contact with and extending along the laterally extended second region and a further contact terminal connected to the doped region for draining minority charge carriers from the laterally extended second region. An amplifier circuit and ic including such transistors are also disclosed..
Nxp B.v.


05/21/15
20150138865 

Semiconductor memory device and driving method thereof


A semiconductor memory device in which capacitance of a capacitor is lower and integration degree is higher. A plurality of memory blocks is connected to one bit line bl_m.
Semiconductor Energy Laboratory Co., Ltd.


05/21/15
20150137894 

Rf power amplifier and operating method thereof


A multiband rf power amplifier includes a first band rf amplifier circuit, a second band rf amplifier circuit and a second band power detection circuit. The second band rf amplifier circuit subjects an rf input signal having a frequency band to power amplification and generates an rf amplifier output signal.
Renesas Electronics Corporation


05/21/15
20150137892 

Polarity-switching amplifier circuit


A polarity-switching amplifier circuit includes: a first amplifying transistor and a second amplifying transistor, a transformer which includes a primary winding and a secondary winding, and a polarity-switching controller. An unbalanced input signal is input to the first amplifying transistor and the second amplifying transistor.
Panasonic Intellectual Property Management Co., Lt D.


05/21/15
20150137885 

Dual path rf amplifier circuit


A dual path rf amplifier circuit including two or more amplifiers that are configurable as to any combination of class of operation, biasing, and power ratio to achieve a desired power curve for the amplifier circuit. In one example, an rf amplifier circuit includes an input coupler that generates at least two coupled signals from an rf input signal, first and second rf amplifiers each configured to receive and amplify one of the coupled signals to generate first and second amplified signals, and an output coupler generate an amplified output signal based on the first and second amplified signals.
Auriga Measurement Systems, Llc


05/21/15
20150137884 

Amplifier circuit


An amplifier circuit is disclosed comprising: an input terminal configured to receive a radio frequency input signal; an output terminal configured to provide a radio frequency output signal; a first transistor having a first collector, a first emitter, and a first base; a second transistor having a second collector, a second emitter, and a second base; a bypass switch; and a controller. The first base is connected to the input terminal and the second emitter.
Nxp B.v.


05/21/15
20150137882 

Analog active low-pass filters


Apparatus and methods for high-frequency low-pass filtering are disclosed. A first resistor is operatively coupled between a first node and a second node.
Analog Devices, Inc.


05/14/15
20150130647 

Current amplifier circuit, integrator, and ad converter


In one embodiment, a current amplifier circuit includes a first transistor, a first resistor, a second transistor, a second resistor, a first passive element, and a control circuit. The first transistor has a first terminal, a second terminal, and a control terminal.

05/14/15
20150130538 

Differential amplifier circuit


In one embodiment, a differential amplifier circuit includes a first input terminal, a second input terminal, a first transistor, a second transistor, a third transistor, a current source, a first output terminal, a second output terminal, a first passive element, and a second passive element. The first (second) transistor has a control terminal connected to the first (second) input terminal.

05/07/15
20150123734 

Quasi-doherty architecture amplifier and method


An amplifier including a main amplifier circuit and at least one peaking amplifier circuit. The peaking amplifier circuit is selectively operable to operate in combination with the main amplifier circuit.
Andrew Llc


05/07/15
20150123731 

Amplifier circuit with cross wiring of direct-current signals and microwave signals


Disclosed is an amplifier circuit with cross wiring of direct-current signals and microwave signals. The circuit includes a circuit network unit formed of a direct-current feeding circuit and a microwave power signal circuit.
China Electronics Technology Group Corporation No. 55 Research Institute


04/30/15
20150116036 

Amplifier circuit


An amplifier circuit includes: first and second nodes configured to receive input of differential signals; third and fourth nodes; a plurality of first inductors configured to be connected in series between the first and second nodes; a plurality of second inductors configured to be connected in series between the third and fourth nodes; a plurality of field effect transistors configured to have gates each configured to be connected between the plurality of first inductors, sources each configured to be connected to a reference potential node, and drains each configured to be connected between the plurality of second inductors; and a synthesizing unit configured to synthesize signals at the third and fourth nodes.. .
Fujitsu Limited


04/30/15
20150116012 

Digital voltage ramp generator


According to some embodiments, an all digital ramp generator may use a string of series connected delays or digital to time-based circuits to perform voltage ramp generation. Thus in some embodiments conventional operational amplifier circuits and relaxation oscillators may be replaced for generating triangular ramp waveforms for dc to dc or direct time-based dc to dc converters.

04/23/15
20150109056 

Class-d amplifier circuits


Methods and apparatus for class-d amplifier circuits with improved power efficiency. The circuit has an output stage with at least first and second switches and a modulator that receives an input signal to be amplified, sin, and a first clock signal fsw.
Wolfson Microelectronics Plc


04/23/15
20150108953 

Voltage regulator


Provided is a voltage regulator including a leakage current sink circuit capable of suppressing an influence of a leakage current of an output transistor at high temperature, and reducing power consumption of the voltage regulator at normal temperature. The voltage regulator includes: a reference voltage circuit configured to output a reference voltage; an output transistor configured to output an output voltage; a voltage divider circuit configured to divide the output voltage to output a feedback voltage; an error amplifier circuit configured to amplify a difference between the reference voltage and the feedback voltage, and output the amplified difference to control a gate of the output transistor; and a leakage current sink circuit connected to an output terminal and configured to be prevented from operating at normal temperature, and suppress an influence of a leakage current from the output transistor only at high temperature..
Seiko Instruments Inc.


04/16/15
20150102951 

Delta-sigma modulator and delta-sigma a/d converter


The present invention relates to a delta-sigma-modulator and a delta-sigma-a/d converter. By speeding up the settling time constant of an integrator at the last stage with a simple configuration, the sampling frequency is sped up in the delta-sigma-modulator as a whole.
Toyota Jidosha Kabushiki Kaisha


04/16/15
20150102789 

Voltage regulator


Provided is a voltage regulator capable of keeping the accuracy of an output voltage thereof even at high temperature. The voltage regulator includes: a reference voltage circuit configured to output a reference voltage; an output transistor configured to output an output voltage; a voltage divider circuit configured to divide the output voltage to output a divided voltage; an error amplifier circuit configured to amplify a difference between the reference voltage and the divided voltage, and output the amplified difference to control a gate of the output transistor; a switching circuit configured to switch the divided voltage of the voltage divider circuit; and a temperature detection circuit configured to output a signal in accordance with temperature to control the switching circuit..
Seiko Instruments Inc.


04/09/15
20150097622 

Amplifier circuit


An amplifier circuit has: a main amplifier connected between an input terminal and an output terminal, the main amplifier amplifying an input signal input to the input terminal and outputting an amplified signal to the output terminal; a compensation circuit comprising a variable delay circuit and a variable gain inverting circuit, the variable delay circuit receiving the input signal and outputting a delay signal with a delay time from the input signal, the variable gain inverting amplifier inverting and amplifying the delay signal with a gain and outputting a compensation signal to the output terminal; and a controller configured to control the gain of the pre-emphasis circuit and the delay time of the variable delay circuit to compensate a response of the main amplifier in a first frequency band lower than a base frequency of a target signal of compensation and in a low frequency band higher than zero hertz.. .
Sumitomo Electric Industries, Ltd.


04/09/15
20150097543 

Voltage regulator


Provided is a voltage regulator including a leakage current correction circuit capable of keeping the accuracy of an output voltage of the voltage regulator even when an output voltage of a reference voltage circuit is decreased due to the influence of a leakage current. The voltage regulator includes: a reference voltage circuit configured to output a reference voltage; an output transistor configured to output an output voltage; a voltage divider circuit configured to divide the output voltage to output a feedback voltage; an error amplifier circuit configured to amplify a difference between the reference voltage and the feedback voltage, and output the amplified difference to control a gate of the output transistor; and a leakage current correction circuit connected to an output terminal of the voltage divider circuit.
Seiko Instruments Inc.


04/02/15
20150094008 

Weakly coupled rf network based power amplifier architecture


Rf communications circuitry, which includes a first group of rf power amplifier circuits and a first weakly coupled rf network, is disclosed. The first group of rf power amplifier circuits includes a first rf power amplifier circuit, which receives and amplifies a first rf amplifier input signal to provide a first rf amplifier output signal, and a second rf power amplifier circuit, which receives and amplifies a second rf amplifier input signal to provide a second rf amplifier output signal.
Rf Micro Devices, Inc.


04/02/15
20150093131 

Optical sensor, image forming device, and correcting toner concentration


An optical sensor configured to irradiate an object area with light and receive reflected light, amplify a voltage in accordance with the reflected light by an amplifier circuit and a resulting voltage, the optical sensor comprising a recording medium recorded with information indicating a noise component calculated, based on characteristics of an input voltage and an output voltage of the amplifier circuit.. .
Omron Corporation


04/02/15
20150091667 

Wideband impedance transformer


Embodiments of a low-complexity and potentially physically small wideband impedance transformer that can be used in a combining network of a wideband doherty amplifier are disclosed. In one embodiment, a wideband doherty amplifier includes doherty amplifier circuitry and a wideband combining network.
Telefonaktiebolaget L M Ericsson (publ)


04/02/15
20150091657 

Methods and devices for thermal control in power amplifier circuits


Methods of turning on and/or turning off amplifier segments in a scalable periphery amplifier architecture are described in the present disclosure. The turning on and/or turning off the amplifier segments according to the various embodiments of the present can reduce spectral splatter in adjacent channels.
Peregrine Semiconductor Corporation


04/02/15
20150091656 

Methods and devices for impedance matching in power amplifier circuits


Methods of turning on and/or turning off amplifier segments in a scalable periphery amplifier architecture are described in the present disclosure. The turning on and/or turning off the amplifier segments according to the various embodiments of the present can reduce spectral splatter in adjacent channels.
Peregrine Semiconductor Corporation


04/02/15
20150091655 

Optimal envelope tracking reference waveform generation


A method and apparatus is provided to improve upon the efficiency of a power amplifier. Suitable hardware/software in the form of circuitry, logic gates, and/or code functions to construct an envelope tracking waveform of an input communications signal and modulate the input supply voltage based on power amplifier circuitry operational parameters such as slew rates..
Broadcom Corporation


04/02/15
20150091651 

Wideband doherty amplifier


Embodiments of a low-complexity and potentially physically small wideband impedance transformer that can be used in a combining network of a wideband doherty amplifier are disclosed. In one embodiment, a wideband doherty amplifier includes doherty amplifier circuitry and a wideband combining network.
Telefonaktiebolaget L M Ericsson (publ)


04/02/15
20150091649 

Pulsed dynamic load modulation power amplifier circuit


A power amplifier circuit for amplifying an envelope modulated radio frequency (rf) signal with improved linearity and efficiency includes a power amplifier, and a variable load matching circuit coupled to an output port of the power amplifier. The input impedance of the variable load matching circuit is changed such that an output power of the power amplifier is at a first output power level, or a second output power level which is higher than the first output power level..
Avago Technologies General Ip (singapore) Pte. Ltd


04/02/15
20150091648 

Amplifier circuit and operation method thereof


An amplifier circuit and an operation method thereof are provided. The amplifier circuit includes two stages of amplifiers.
Novatek Microelectronics Corp.


04/02/15
20150091644 

Class hd power amplifier


A multi-level amplifier including a converter circuit being supplied with a supply voltage and operable to generate at least two output voltages, a voltage comparator circuit adapted to compare each of the output voltages with the supply voltage to generate a driving signal, and an amplifier circuit being supplied with an analog input signal, the amplifier circuit including an analog-to-digital converter coupled to a power stage driver and power stage, wherein the power stage driver receives the driving signal from the voltage comparator.. .
Analog Devices Technology


04/02/15
20150090864 

Optically enabled multi-chip modules


An optically enabled multi-chip module has an optical engine transceiver and a host system chip. The optical engine transceiver has an optical engine front-end and an optical engine macro.
Finisar Corporation


03/26/15
20150084711 

Oscillation circuit, electronic apparatus, moving object, and manufacturing oscillation circuit


An oscillation circuit includes an oscillation amplifier circuit that causes an oscillating element to oscillate to generate an oscillation signal, and a correction circuit connected with the oscillation amplifier circuit. At least a power supply voltage is input to the oscillation amplifier circuit.
Seiko Epson Corporation


03/26/15
20150084698 

Power amplifier circuit


Linearity and power efficiency in a power amplifier circuit are enhanced. The power amplifier circuit includes a first transistor that amplifies a signal input to the base and that outputs the amplified signal from the collector and a first capacitor that is disposed between the base and the collector of the first transistor and that has voltage dependency of a capacitance value lower than that of a base-collector parasitic capacitance value of the first transistor..
Murata Manufacturing Co., Ltd.


03/26/15
20150084695 

Cascode amplifier


In one embodiment, a cascode amplifier includes an amplifier circuit, a replica circuit, a bias circuit, and a feedback circuit. The amplifier circuit includes a first transistor and a second transistor.
Kabushiki Kaisha Toshiba


03/26/15
20150084678 

Phase locked loop circuit


A phase locked loop (pll) circuit is provided. The pll includes a voltage controlled oscillator (vco) for outputting an oscillation signal of a frequency corresponding to an inputted voltage, a frequency divider for dividing the oscillation signal and output a frequency-divided signal, a phase comparator for comparing a phase of the frequency-divided signal and the phase of an input signal from the outside and output a first phase comparison signal and a second phase comparison signal which have different polarities, a differential amplifier circuit for outputting a control voltage based on a voltage difference between the first phase comparison signal and the second phase comparison signal to the vco, a level shift circuit for outputting a level-shifted signal which is made by shifting a direct current level of the second phase comparison signal, and an amplifier circuit for outputting an amplified signal which is an amplified level-shifted signal..
Nihon Dempa Kogyo Co., Ltd.


03/26/15
20150084620 

Magnetic sensor


Provided is a magnetic sensor capable of identifying an individual having a high offset voltage, which is a cause of an initial defect in magnetic characteristics, and changes over time. A cross-transmission switch is provided in a changeover switch circuit which transmits to an amplifier circuit a differential signal voltage output from a hall element, and the cross-transmission switch cross-transmits a signal in any one of a first period and a second period during which a current flowing into the hall element is switched by a control signal from a control circuit, to thereby determine and identify a magnitude of an offset voltage..
Seiko Instruments Inc.




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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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