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8183916 |
Non-inverting amplifier and voltage supply circuit including the same
A non-inverting amplifier includes an operational amplifier, an input resistor, and a feedback resistor. The operational amplifier amplifies and outputs a difference between an input voltage and a...
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8179183 |
Low-consumption switched-capacitor circuit
A switched-capacitor circuit including at least one first capacitor and a circuit for switching at least one armature of the first capacitor alternately to one and the other of two terminals at a...
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8174312 |
Apparatus and method for signal processing of voltage signals from electrodes of a magneto-inductive, flow measuring device
Signal processing circuit for voltage signals from electrodes of a magneto-inductive, flow measuring device, wherein two measuring electrodes are connected with a fully differentially working...
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8159292 |
Amplifying circuit
To efficiently obtain two outputs including one at a normal level and the other at an excessive level. An input signal input to the negative input terminal of an operational amplifier (14) having a...
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8150058 |
Mode switching noise cancellation for microphone-speaker combinations used in two way audio communications
An audio host device has an electrical interface having a speaker contact, a microphone contact, and a reference contact. The reference contact is shared by a microphone and a speaker. The...
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8138830 |
Variable gain instrumentation amplifier
Techniques for providing an instrumentation amplifier having a plurality of selectable gain settings. In an exemplary embodiment, a gain adjustment block for accepting a differential input voltage...
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8130032 |
Systems and methods for high-sensitivity detection of input bias current
The invention relates to systems and methods for high-sensitivity detection of input bias current. The invention more particularly relates to platforms and techniques for the calibration and...
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8130132 |
Differential chopper comparator and A/D converter including the same
A differential chopper comparator compares an input signal voltage and a first voltage, and includes a first capacitor, a second capacitor, and a differential amplification unit including a...
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8125270 |
Frequency offset Cartesian feedback system
An amplifier system providing improved Cartesian feedback is provided. A complex band pass error amplifier is provided. A quadrature up converter is connected to the complex band pass error...
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8125275 |
Amplifier having input/output cells with discrete gain steps
An amplifier has an input section with one or more input cells and an output section with one or more output cells. Either the input section or the output section includes at least two cells that...
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8120423 |
OP-AMP sharing with input and output reset
An operational amplifier with two pairs of differential inputs for use with an input switch capacitor network. The operational amplifier has reset devices for resetting the second pair of...
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8115544 |
Amplifier circuit and integrated circuit therefor
An amplifier circuit on a single die comprises a low voltage amplifier with a first common mode voltage and having an input and an output. A power amplifier has a second common mode voltage whose...
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8111100 |
Differential amplifier with improved zero-point calibration
The present invention covers novel approaches to the differential amplification of an input signal. Embodiments of the present invention have precise gain, swing to within micro-volts (μV) of ...
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8085079 |
Summing circuit for a filter
According to one embodiment of the invention, a summing circuit comprises a first transmitter, a second transmitter, a first current offset circuit and a first transconductance amplifier. The first...
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8072262 |
Low input bias current chopping switch circuit and method
A chopper-stabilized circuit (1) includes pre-chopping circuitry (26) for chopping an input signal (Vin) at a first frequency to generate a first signal. Input chopping circuitry (9) chops the...
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8054133 |
Device and method for eliminating feedback common mode signals
A device and a method for eliminating feedback common mode signals are provided, which belong to the electronic technology field. The device includes an operational amplifier circuit with two...
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8050423 |
Integrated circuit device and audio system
An n-channel integrated circuit device (n is an integer of 1 or greater) for muting an audio signal includes a control circuit configured to generate a control signal and a delayed control signal,...
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8026759 |
Multistage amplifying circuit
A multistage amplifying circuit includes a first amplifying circuit that either samples a first analog voltage input or amplifies a difference between the first analog voltage and a first digital...
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7999612 |
Operational amplifier having DC offset cancellation capability
An operational amplifier includes an input stage for generating a first differential output signal pair according to a first differential input signal pair, an output stage for generating a second...
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7994863 |
Electronic system having common mode voltage range enhancement
An electronic system generates at least one floating supply voltage, wherein during operation of the circuit the floating supply voltage tracks a common mode voltage of first and second...
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7965139 |
Amplifier offset and noise reduction in a multistage system
Conventional multistage amplifiers oftentimes employ trim circuits or highly matched components to combat noise and offset contributions. Having trim circuitry or highly matched components...
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7961042 |
Amplifier circuit and magnetic sensor
An amplifier circuit, includes: a first amplifier; a second amplifier; a first capacitor connected to the first amplifier; a second capacitor having one terminal connected to the first amplifier,...
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7952428 |
Dynamically adjustable low noise, low power instrumentation amplifier
A circuit in accordance with an embodiment of the present invention includes an instrumentation amplifier, a dynamically adjustable low pass filter, at least one monitor and a controller. The...
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7952427 |
Signal amplifier circuit and optical receiver
A signal amplifier circuit includes peak value holding circuit 11 receiving positive-phase input signal, peak value holding circuit 12 receiving negative-phase input signal, adder 13 adding the...
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7929989 |
Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying...
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7916133 |
Buffer amplifier, driver IC and display apparatus using that driver IC
A buffer circuit is driven with a low voltage and operates at a high speed has first and second comparators constituted by P channel and N channel MOS transistors provided between an input terminal...
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7903823 |
Apparatus and method for effecting sound stage expansion
An apparatus for effecting sound stage expansion in an audio system presenting two sound channels includes: (a) A first signal source coupled for providing at least one first signal representing a...
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7902923 |
Common-gate common-source amplifier
Techniques for integrating a common-source and common-gate amplifier topology in a single amplifier design. In one aspect, an input voltage is provided to both a common-source amplifier and a...
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7893759 |
Current conveyor based instrumentation amplifier
Current conveyor based instrumentation amplifiers are disclosed. Such instrumentation amplifiers may have the higher common mode rejection ratios (CMRR), lower area requirements in integrated...
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7888996 |
Chopper stabilized operational amplifier
Chopper stabilized operational amplifiers are in common use. One drawback of these amplifiers, however, is that there is an inherent tone present at the chopper frequency. Conventional circuits...
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7885682 |
Systems and methods of RF power transmission, modulation, and amplification, including architectural embodiments of same
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying...
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7880541 |
Low noise, low power instrumentation amplifier
An instrumentation amplifier includes a pair of buffered operational amplifiers that accept a pair of input signals, and a differential operational amplifier that outputs an output signal...
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7863977 |
Fully differential non-inverted parallel amplifier for detecting biology electrical signal
This invention relates to a fully differential non-inverting parallel amplifier for detecting biology electrical signal, including input buffer circuits, differential filter circuits, data...
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7839212 |
Method and apparatus for a high bandwidth amplifier with wide band peaking
A two stage fully differential amplifier has been designed which works, in tandem with a TX-FIR, as a linear equalizer at low frequencies, not covered by the TX-FIR, and also acts as a linear...
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7822162 |
Current mode differential signal transmitting circuit sharing a clock outputting unit
A current-mode differential signal transmitting circuit is disclosed, including a transmitter having a first transmitting module and a second transmitting module. The first transmitting module...
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7812668 |
Multi-input operational amplifier and method for reducing input offset thereof
A multi-input operational amplifier comprises two transconductors, two current mirrors, and a current source. Each transconductor generates a current according to a corresponding voltage...
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7795974 |
Digitally variable gain amplifier using multiplexed gain blocks
A digitally variable gain amplifier comprising a front-end stage, a level shifter stage, and an output amplifier stage. The front-end stage comprises a high gain pre-amplifier and a low gain...
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7782131 |
Balanced amplifier and electronic circuit
A balanced amplifier (1) is provided with: a first operational amplifier (11) whose reverse-phase input terminal is connected to an input voltage source (30) and whose reverse-phase input terminal...
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7777565 |
Differential amplification circuit and manufacturing method thereof
A differential amplification circuit and a method corrects an offset voltage derived from a variance in resistances. With first and second input terminals brought to the same potential and set to a...
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7756279 |
Microphone preamplifier
A microphone preamplifier, comprising a differential input (102) stage with a first and a second input terminal and an output stage with an output terminal; where the microphone preamplifier is...
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7733172 |
DC self-biased vacuum tube differential amplifier with grid-to-cathode over-voltage protection
A single stage differential amplifier is disclosed as comprising a pair of vacuum tube triodes for amplifying two input signals and generating two output signals. The differential amplifier has DC...
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7733168 |
Fully differential comparator and fully differential amplifier
A first to a fourth sampling switch (1a to 1d), a first to a fourth sampling capacitance (4 to 7), and a first and a second charge redistribution switch (2a, 2b) are provided on the input side of a...
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7711128 |
System, circuit, and amplifier for reducing pop sound
An audio power amplifier includes a differential amplifier circuit that serves as an input circuit. The differential amplifier circuit includes a signal GND (SG) terminal that receives a SG...
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7705683 |
Method and system for processing signals via an integrated low noise amplifier having configurable input signaling mode
Aspects of a method and system for processing signals via an integrated low noise amplifier having a configurable input signaling mode are provided. For an unbalanced input signal, a first input...
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7701284 |
Line driver capable of automatically adjusting output impedance
A line driver includes: a differential amplifier for amplifying an input signal to generate an output signal; first and second series resistors coupled respectively to output terminals of the...
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7671674 |
Amplifier circuit with automatic gain correction
The present invention relates to an amplifier circuit and system, and to a method of compensating a gain imbalance generated in a complementary amplifier stage with first and second amplifier means...
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7646241 |
Low-voltage operational amplifier and operational amplifying method
A low-voltage operational amplifier includes a differential amplifying stage, an output amplifying stage and a compensation stage. The differential amplifying stage amplifies a difference between a...
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7639073 |
Switched-capacitor amplifier with improved reset phase
A switch-capacitor (“SC”) amplifier includes a two-stage operational amplifier (“OP-AMP”), an input SC network, and a feedback SC network. The two-stage OP-AMP includes a first OP-AMP stage having ...
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7622991 |
Transconductance signal capacity format
Operational transconductance amplifiers have a natural signal capacity format in which signal performance can be expressed in terms of fixed percentages. Input signal can be applied to Operational...
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7620121 |
DC balance compensation for AC-coupled circuits
A receiver has a first input port and a second input port both coupled to a differential amplifier through first and second input capacitors. A bias circuit coupled to the core side of the first...
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