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Amplifier Circuit patents

      

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




 Secondary cell state detector patent thumbnailSecondary cell state detector
A condenser is connected to both electrodes of a secondary cell. A first switch is provided between a positive electrode of the secondary cell and a one-side plate of the condenser.
Yazaki Corporation


 Secondary cell state detector patent thumbnailSecondary cell state detector
One-side plates of first and second condensers are connected to a one-side electrode of one of a plurality of secondary cells. First switches connect the other-side electrode of the secondary cell to the other-side plate of one of the first condenser and the second condenser.
Yazaki Corporation


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


 Buffer amplifier circuit for enhancing the slew rate of an output signal and devices including the same patent thumbnailBuffer amplifier circuit for enhancing the slew rate of an output signal and devices including the same
A buffer amplifier circuit includes a buffer amplifier including a first differential amplifier having a first active load and a second differential amplifier having a second active load and a feedback circuit configured to feed an output signal of an output terminal of the buffer amplifier back to one of the first and second active loads using differential switch signals and an input signal of the buffer amplifier to enhance a slew rate of the output signal.. .
Samsung Electronics Co., Ltd.


 Multi-stage amplifiers with low loss patent thumbnailMulti-stage amplifiers with low loss
An amplifier circuit (100) comprises three amplifier subcircuits (121,131,141) connected via a network of transmission lines to a common node. A control circuit is configured to control the three amplifier subcircuits (121,131,141) to operate in first, second, and third operating modes, such that a first subcircuit (121) is active in the first, second, and third modes, a second sub-circuit (141) is inactive in the first mode but active in the second and third modes, and a third subcircuit (131) is inactive in the first and second modes but active in the third.
Telefonaktiebolaget Lm Ericsson (publ)


 Battery short-circuit protection circuit patent thumbnailBattery short-circuit protection circuit
This invention involves a battery short-circuit protection circuit installed in a battery-load circuit. In the battery-load circuit, there is a battery and a load rl.
Hefei University Of Technology


 Class-d amplifier circuits patent thumbnailClass-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.
Cirrus Logic International Semiconductor Ltd.


 Process-compensated hbt power amplifier bias circuits and methods patent thumbnailProcess-compensated hbt power amplifier bias circuits and methods
The present disclosure relates to a system for biasing a power amplifier. The system can include a first die that includes a power amplifier circuit and a passive component having an electrical property that depends on one or more conditions of the first die.
Skyworks Solutions, Inc.


 Matching network for load line change patent thumbnailMatching network for load line change
An amplifier circuit that includes a first power amplifier configured to drive a load and a second power amplifier configured to drive the load through an impedance step-up network. The impedance step-up network is connected to an output of the second power amplifier.
Media Tek Inc.


 Programmable transmit continuous-time filter patent thumbnailProgrammable 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.


Telescopic amplifier with improved common mode settling

Telescopic amplifier circuits are disclosed. In an embodiment, a telescopic amplifier includes an input stage for receiving differential input signals, an output stage for outputting differential output signals at the drains of a first output transistor and a second output transistor, a tail current transistor coupled to sources of a first input transistor and a second input transistor, a common mode feedback circuit coupled to the differential output signals and outputting a common mode output signal, and a circuit element coupled between the common mode output signal and a gate of the tail current transistor.
Texas Instruments Incorporated

Transformer based duplexer

A tunable transformer based duplexer (ttbd) comprising a first antenna port and a second antenna port. The ttbd further comprises a first winding coupled between a transmitting port and the first antenna port, wherein the first antenna port is configured to receive a first signal; a second winding coupled between the transmitting port and the second antenna port, wherein the second antenna port is configured to receive a second signal.
Intel Ip Corporation

Dc bias circuit and the radio frequency receiver circuit using the same

The present invention presents a dc bias circuit including a first biasing circuit and a second biasing circuit. The first biasing circuit includes a first biasing transistor and a first biasing resistor for providing a first bias voltage to an output transistor of the mixer circuit.
Intel Corporation

Semiconductor device and manufacturing the same

A solid-state image sensing element including a transistor with stable electrical characteristics (e.g., significantly low off-state current) is provided. Two different element layers (an element layer including an oxide semiconductor layer and an element layer including a photodiode) are stacked over a semiconductor substrate provided with a driver circuit such as an amplifier circuit, so that the area occupied by a photodiode is secured.
Semiconductor Energy Laboratory Co., Ltd.

Operational amplifier circuit

In a folded cascode operational amplifier circuit, a source is connected to a back gate in each of third and fourth transistors that are cascode-connected to first and second transistors, which are an electric current source that returns an electric current signal output by a differential pair of an input stage. In the third and fourth transistors, an active parasitic element exists due to its device structure.
Fuji Electric Co., Ltd.

Power amplifier module

Improvement in linearity is achieved at low costs in a power amplifier module employing an envelope tracking system. The power amplifier module includes a first power amplifier circuit that amplifies a radio frequency signal and that outputs a first amplified signal, a second power amplifier circuit that amplifies the first amplified signal on the basis of a source voltage varying depending on amplitude of the radio frequency signal and that outputs a second amplified signal, and a matching circuit that includes first and second capacitors connected in series between the first and second power amplifier circuit and an inductor connected between a node between the first and second capacitors and a ground and that decreases a gain of the first power amplifier circuit as the source voltage of the second power amplifier circuit increases..
Murata Manufacturing Co., Ltd.

Differential amplifier circuit

A differential amplification circuit may include a differential amplification unit including a first input transistor and a second input transistor, and suitable for differentially amplifying input signals inputted through the first and second input transistors; a first input control section suitable for turning off the first input transistor when the differential amplification circuit is disabled and transferring a first input signal to the first input transistor when the differential amplification circuit is enabled; and a second input control section suitable for turning off the second input transistor when the differential amplification circuit is disabled and transferring a second input signal to the second input transistor when the differential amplification circuit is enabled.. .
Sk Hynix Inc.

Latching current sensing amplifier for memory array

A latching current sensing amplifier circuit for memory arrays and a current sensing technique using the latching current sensing amplifier circuit are provided. The current sense-amplifier circuit includes a first and second pair of series connected transistors configured with a common gate node for a sense operation and reconfigurable as a cross-coupled pair for a latching operation..
International Business Machines Corporation

Hall electromotive force signal detection circuit and current sensor thereof

The present invention relates to a hall electromotive force signal detection circuit and a current sensor thereof each of which is able to achieve excellent wide-band characteristics and fast response as well as high accuracy. A difference calculation circuit samples a component synchronous with a chopper clock generated by a chopper clock generation circuit, out of an output voltage signal of a signal amplifier circuit, at a timing obtained from the chopper clock, so as to detect the component.
Asahi Kasei Microdevices Corporation

Input front-end circuit for switching power supply control integrated circuit and switching power supply controller having the same

An inverting amplifier creates a voltage c using a reference voltage (voltage b) as a reference point. An adder composed of two input inverting amplifier circuits ultimately creates a voltage d by carrying out weighted addition of the voltage a and the voltage c.
Fuji Electric Co., Ltd.

Imaging device and imaging system

An imaging device according to an exemplary embodiment includes a plurality of pixels, a differential amplifier circuit that includes a plurality of transistors forming a differential pair, and a current source configured to supply a bias current to the plurality of transistors, and is configured to receive a signal from the plurality of pixels, a capacitor element including a first terminal and a second terminal, a first switch through which the first terminal is connected to an electric path between the current source and the plurality of transistors, and a second switch through which the first terminal is connected to a voltage supply node supplied with a voltage.. .
Canon Kabushiki Kaisha

Amplifier circuit, ad converter, wireless communication device, and sensor system

An amplifier circuit has a sampling circuit to comprise a sampling capacitor which samples an input voltage and a plurality of switches, a quantizer to quantize an output voltage of the sampling circuit, a da converter to output an analog signal depending on a quantization signal by the quantizer, and a feedback capacitor to feed the analog signal back to the output voltage of the sampling circuit.. .
Kabushiki Kaisha Toshiba

Variable gain amplifier circuit, controller of main amplifier and associated control method

A variable gain amplifier circuit comprises a main amplifier, a current sensing circuit, a variable loading and a control amplifier. The main amplifier is configured for amplifying an input signal to generate an output signal.
Mediatek Inc.

Differential amplifier circuit for a capacitive acoustic transducer and corresponding capacitive acoustic transducer

An amplifier circuit, for a capacitive acoustic transducer defining a sensing capacitor that generates a sensing signal as a function of an acoustic signal, has a first input terminal and a second input terminal, which are coupled to the sensing capacitor and: a dummy capacitor, which has a capacitance corresponding to a capacitance at rest of the sensing capacitor and a first terminal connected to the first input terminal; a first buffer amplifier, which is coupled at input to the second input terminal and defines a first differential output of the circuit; a second buffer amplifier, which is coupled at input to a second terminal of the dummy capacitor and defines a second differential output of the circuit; and a feedback stage, which is coupled between the differential outputs and the first input terminal, for feeding back onto the first input terminal a feedback signal, which has an amplitude that is a function of the sensing signal and is in phase opposition with respect thereto.. .
Stmicroelectronics S.r.l.

Temperature sensor circuit and semiconductor device including temperature sensor circuit

To provide a highly accurate temperature sensor circuit. The temperature sensor circuit includes a first constant current circuit; a first diode in which a first voltage reflecting the temperature of an object to be detected is generated between an anode and a cathode in accordance with a first current supplied from the first constant current circuit; a second constant current circuit; a second diode which includes an oxide semiconductor and in which a second voltage is generated between an anode and a cathode in accordance with a second current supplied from the second constant current circuit; and an amplifier circuit which amplifies a difference between the first voltage and the second voltage..
Semiconductor Energy Laboratory Co., Ltd.

Amplifier circuit and adaptive amplifier biasing

Disclosed examples include amplifier circuits with a first stage to amplify an input voltage signal according to a first stage gain to provide a first stage output voltage signal, and a second stage to provide an amplifier output voltage signal. A bias circuit provides an amplifier bias current signal to a current mirror circuit coupled with the first stage to control a first stage bias current, and an adjustment circuit to reduce the amplifier bias current signal and increase the first stage gain when the input voltage signal is near a first supply voltage or a second supply voltage..
Texas Instruments Incorporated

Corona ignition with self-tuning power amplifier

A power amplifier circuit for a corona ignition system is provided. The circuit includes an inductor and capacitor connected to one end of a secondary winding of an rf transformer.
Federal-mogul Ignition Company

Voltage regulator

Provided is a voltage regulator configured to suppress a fluctuation in output voltage even when a power supply voltage fluctuates, thereby realizing stable operation thereof. The voltage regulator includes a control circuit including a first input terminal connected to a drain of an output transistor, a second input terminal connected to a power supply terminal, an overshoot detection circuit connected to the first input terminal, and a power supply voltage detection circuit connected to the second input terminal, and being configured to cause a boost current to flow through an error amplifier circuit when an output voltage and a power supply voltage largely fluctuate with respect to a predetermined voltage..
Sii Semiconductor Corporation

Switched capacitor power amplifier circuits and methods

The present disclosure includes a switched capacitor power amplifier. In one embodiment, an scpa includes a first capacitor array for coupling charge to a common node using first component of a signal.
Qualcomm Incorporated

Electrical signal amplifier, circuit arrangement and method

An electrical signal amplifier, having an amplifier input and an amplifier output is provided, which are set up to receive an electrical input signal and to output an amplified signal as electrical output signal, wherein an amplifier circuit arranged between the amplifier input and the amplifier output and amplifying the electrical input signal has a voltage divider circuit and a series circuit of gate-source paths in a transistor arrangement, which is assigned to an amplifier stage, the voltage divider circuit is connected downstream of the amplifier input, and an output of the voltage divider circuit is connected to gate contacts of the series circuit of gate-source paths, and a gate voltage supply circuit is connected to the gate contacts of the series circuit of gate-source paths. The disclosure furthermore relates to a method for amplifying an electrical signal by means of an electrical signal amplifier..
Brandenburgische Technische Universität Cottbus - Senftenberg

High gain rf power amplifier with negative capacitor

A radio frequency (rf) power amplifier circuit includes an input and an output. A power amplifier transistor has a first terminal connected to the input, a second terminal connected to the output, and a third terminal defined by a degeneration inductance.
Rfaxis, Inc.

Amplifier circuit and methods of operation thereof

A signal amplifying circuit and associated methods and apparatuses, the circuit comprising: a signal path extending from an input terminal to an output terminal, a gain controller arranged to control the gain applied along the signal path in response to a control signal; an output stage within the signal path for generating the output signal, the output stage having a gain that is substantially independent of its supply voltage, and a variable voltage power supply comprising a charge pump for providing positive and negative output voltages, the charge pump comprising a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of the states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage.. .
Cirrus Logic International Semiconductor Ltd.

Amplifiers

This application relates to audio amplifier circuitry (100). An amplifier module (103) is located in a signal path between an input (101) and an output (102).
Cirrus Logic International Semiconductor Ltd.

Rf power amplifiers with diode linearizer

A radio frequency (rf) power amplifier circuit with a diode linearizer circuit. The power amplifier circuit has an input and an output, as well as a power amplifier transistor with a first terminal connected to the input, a second terminal connected to the output, and a third terminal.
Skyworks Solutions, Inc.

Power saving apparatus of capacitive pointer

A power saving apparatus of a capacitive pointer is disclosed. The power saving apparatus of a capacitive pointer comprises an amplifier circuit, a first comparator circuit and a second comparator circuit, a controller and a switch.
Waltop International Corporation

System, apparatus, and measuring ion concentration with a standard deviation correction

Embodiments of the inventive concept include a portable ion concentration apparatus including a controller, a storage section to store one or more data samples, an amplifier circuit, and a chemical field effect transistor (chemfet). The chemfet and the amplifier circuit can indicate a quantity of nitrate levels in a sample media or a reference media.
Suprasensor Technologies, Llc

Signal readout circuit, imaging apparatus, and imaging system

Provided is a signal readout circuit, including: an input unit to which a first signal and a second signal are input; a first holding capacitor configured to hold the first signal input from the input unit; a second holding capacitor configured to hold the second signal input from the input unit; and an amplifier circuit including an input terminal and an output terminal and configured to be able to input a signal held in one of the first holding capacitor and the second holding capacitor to the input terminal, in which, in a period in which the first signal is input from the input unit to the first holding capacitor, the first signal is input to the input terminal of the amplifier circuit via the first holding capacitor.. .
Canon Kabushiki Kaisha

Common gate multiple input low noise amplifier

Antenna diversity integrated circuit having two or more rf input connections for connecting an antenna (1a, 1b, 1c). A low noise amplifier circuit is present having a first stage (7a, 7b, 7c) for each one of the two or more rf input connections and a single second stage (8).
Greenpeak Technologies B.v.

Audio amplifier circuit, audio output device using the same, and electronic device using the same

An audio amplifier circuit for driving an electro-acoustic transducer, which is bridged transless (btl)-connected to the audio amplifier circuit, in a filterless manner, including: a class d amplifier including a high side transistor and a low side transistor; a high side driver configured to drive the high side transistor; and a low side driver configured to drive the low side transistor, as a pair, wherein the low side driver is configured so that a time for turning off the low side transistor by the low side driver is longer than that for turning off the high side transistor by the high side driver.. .
Rohm Co., Ltd.

Photosensitive imaging apparatus and forming same

A photosensitive imaging apparatus and a method of forming such an apparatus are disclosed. The apparatus includes: a first semiconductor substrate, including a photosensitive semiconductor layer including an array of photodetectors; and a second semiconductor substrate, stacked with the first semiconductor substrate and including a pixel-circuitry semiconductor layer including an array of in-pixel amplifier circuitries.
Shanghai Jadic Optoelectronics Technology Co., Ltd

Ramp generator for low noise image sensor

A readout circuit for use in an image sensor includes a sense amplifier circuit coupled to a bitline to sense analog image data from a pixel cell of the image sensor. An analog to digital converter is coupled to the sense amplifier circuit to convert the analog image data to digital image data.
Omnivision Technologies, Inc.

Solid-state imaging device

The solid-state imaging device includes unit cells each of which and generates a pixel signal corresponding to a light reception amount, vertical signal lines each of which is provided for a corresponding column of the unit cells and transfers the corresponding pixel signal, comparators each of which is provided for corresponding one of the vertical signal lines, and a ramp signal generation circuit that supplies a common ramp signal to the comparators. Each of the comparators includes a differential amplifier circuit that includes a transistor to which the ramp signal or the pixel signal is input, a transistor to which the other of the ramp signal and the pixel signal is input, an output terminal for outputting a signal corresponding to a difference between the ramp signal and the pixel signal, and a voltage generation circuit for reducing fluctuations of charge accumulated in a capacitance component of the transistor..
Panasonic Intellectual Property Management Co., Ltd.

Image sensor circuit with power noise filtering function and control method thereof

The present invention provides an image sensor circuit with a power noise filtering function and a control method thereof. The image sensor circuit includes: an image sensing unit, for sensing an image, to generate an image sensed signal; a power noise sensing unit, for sensing a power noise, to generate a power noise signal; a differential amplifier circuit, which is coupled to the image sensing unit and the power noise sensing unit, for receiving the image sensed signal and the power noise signal, to generate a differential filtered signal by a differential amplification operation between the image sensed signal and the power noise signal; and an analog-to-digital converter (adc) circuit, which is coupled to the differential amplifier circuit, for receiving the differential filtered signal, to generate a digital image signal..
Pixart Imaging Incorporation



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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    This listing is a sample listing of patent applications related to Amplifier Circuit for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Amplifier Circuit with additional patents listed. Browse our RSS directory or Search for other possible listings.


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