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Class 330/103 - Multiple feedback paths


Subclass of Class 330 - Amplifiers
Definition: Subject matter including two or more signal feedback circuit
No. of applications: 11
Last issue date: 03/22/2012


Application No.Application TitleIssue Date
20120068765Method for Offset Compensation of a Switched-Capacitor Amplifier and Switched Capacitor Amplifier Arrangement
A method for offset compensation of a switched-capacitor amplifier comprises a reset phase (φ1) and at least one working phase (φ2). An output voltage (Vout) of the amplifier (amp) is fed according to a damped feedback loop gain (AB(1)) to a first...
03/22/2012
20110193623Large Time Constant Steering Circuit and Instrumentation Amplifier Implementing Same
The present invention relates to a large time constant steering circuit for slowly changing a voltage on a node between at least two discrete voltage levels. The present invention further relates to a slow steering current DAC comprising said large time constant steerin...
08/11/2011
20110169677RESONATOR AND OVERSAMPLING A/D CONVERTER
Two resistive elements and a capacitive element are coupled between a first node and each of an inverting input terminal of an operational amplifier, an output terminal of the operational amplifier, and a common node. A resistive element and a capacitive element are cou...
07/14/2011
20110163803Programmable Gain Amplifier and Embedded Filter
There is provided an integrated circuit having a programmable gain amplifier and an embedded filter. The programmable gain amplifier and the filter comprise a gain element having an inverting input for receiving an input and a feedback signal, a non-inverting input coup...
07/07/2011
20110068864Self oscillating class D amplification device
An amplification device, comprising a device input receiving a device input signal, an amplifier unit comprising a zero crossing detector unit, an output filter and a lead-lag compensation network. The zero crossing detector unit compares the device input signal with a ...
03/24/2011
20090284315OPERATIONAL AMPLIFIER
An operational amplifier includes, between an input and an output of an operational amplifier (an operational amplification stage) 10, a feedback capacitor 34 connected in negative feedback, a phase control circuit 100 having a resistor element (a r...
11/19/2009
20090224827Split-feedback Technique for Improving Load Regulation in Amplifiers
A circuit arrangement and method for improving load regulation in an amplifier (e.g., LDO amplifier) uses a feedback circuit including a parallely connected feedback resistance Rf and a noise reduction feedback capacitance Cf, wherein an external capacitance has equival...
09/10/2009
20080290937Constant gain amplifier system with positive and negative feedback
Constant and accurate signal gain systems based on controlling oscillator loop gain. A constant gain positive feedback network and an amplifier form an oscillator. Only when the oscillator loop gain is at least one does the oscillator produces an AC signal. Negative fee...
11/27/2008
20080150631Biosignal amplifying device
A biosignal amplifying device includes: an operational amplifier (op-amp); a capacitor load including a first capacitor connected with a first input terminal of the op-amp, and in which a first voltage is inputted from a first electrode, and a second capacitor which is ...
06/26/2008
20070296491NOISE-SHAPING AMPLIFIER WITH WAVEFORM LOCK
A generalized amplifier architecture is described which employs noise-shaping feedback, and for which the output waveform closely resembles the input waveform. ...
12/27/2007
20060044059Feedback circuit
For reducing various adverse effects due to provision of a low-pass filter, while suppressing an oscillation generated therein, there is provide a feedback circuit, having at least one operational amplifier, having a low-pass filter in an output portion thereof, for fee...
03/02/2006
 
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