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Class Information
Number: 330/9
Name: Amplifiers > With periodic switching input-output (e.g., for drift correction)
Description: Subject matter including a periodic switching means common to the input and output circuits of the amplifier.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Patent Number Title Of Patent Date Issued
8362831 Reference voltage buffer and method thereof Jan. 29, 2013
8363045 Class AB amplifier circuit and display apparatus Jan. 29, 2013
8354881 Chopper-stabilized instrumentation amplifier Jan. 15, 2013
8350736 Offset compensation scheme using a DAC Jan. 8, 2013
8344797 Systems and methods for offset cancellation method for DC-coupled audio drivers Jan. 1, 2013
8344798 Correlated-double-sampling switched-capacitor gain stages, systems implementing the gain stages, and methods of their operation Jan. 1, 2013
8339195 Circuits and methods for calibrating offset in an amplifier Dec. 25, 2012
8330536 Differential reference interface with low noise offset cancellation Dec. 11, 2012
8330537 Low noise, high CMRR and PSRR input buffer Dec. 11, 2012
8319550 Switched-capacitor programmable-gain amplifier Nov. 27, 2012
8299850 Device with reconfigurable continuous and discrete time functionality Oct. 30, 2012
8289082 Circuit and method for adjusting an offset output current for an input current amplifier Oct. 16, 2012
8289074 Discrete time operational transconductance amplifier for switched capacitor circuits Oct. 16, 2012
8284963 Method and apparatus for diminishing mismatch effects between switched signals Oct. 9, 2012
8278999 Output buffer circuit capable of enhancing stability Oct. 2, 2012
8274327 Switched capacitor amplifier Sep. 25, 2012
8265769 Chopper-stabilized instrumentation amplifier for wireless telemetry Sep. 11, 2012
8264282 Amplifier Sep. 11, 2012
8258863 Circuit and method for reducing input leakage in chopped amplifier during overload conditions Sep. 4, 2012
8258864 Ultra low voltage multi-stage high-speed CMOS comparator with autozeroing Sep. 4, 2012
8253470 Offset calibration for amplifiers Aug. 28, 2012
8248108 Comparator with offset compensation, in particular for analog digital converters Aug. 21, 2012
8248158 Chopper stabilized amplifier Aug. 21, 2012
8248162 Differential amplifier Aug. 21, 2012
8203381 Voltage output device having an operational amplifier Jun. 19, 2012
8198937 Switched-capacitor amplifier circuit Jun. 12, 2012
8195119 Switchable input pair operational amplifiers Jun. 5, 2012
8183920 Variable gain amplifier with reduced power consumption May. 22, 2012
8183921 Offset cancellation for continuous-time circuits May. 22, 2012
8179195 Current-feedback instrumentation amplifiers May. 15, 2012
8169249 Calibrating a system by setting difference between signals May. 1, 2012
8154337 Apparatus and method for automated offset reduction in matched differential input devices Apr. 10, 2012
8154338 Offset cancellation for differential circuits Apr. 10, 2012
8155349 Muting control device, muting control method, and muting control program Apr. 10, 2012
8149955 Single ended multiband feedback linearized RF amplifier and mixer with DC-offset and IM2 suppression feedback loop Apr. 3, 2012
8149041 High-resolution parametric signal restoration Apr. 3, 2012
8138826 Apparatus and method for complete elimination of input coupling capacitors in signal amplification Mar. 20, 2012
8139053 Arrangement for canceling offset of driver amplifier circuitry Mar. 20, 2012
8120422 Ripple reduction loop for chopper amplifiers and chopper-stabilized amplifiers Feb. 21, 2012
8120423 OP-AMP sharing with input and output reset Feb. 21, 2012
8115539 Operational amplifier Feb. 14, 2012
8111097 Device with reconfigurable continuous and discrete time functionality Feb. 7, 2012
8111098 Segmented linear FM power amplifier Feb. 7, 2012
8102204 Amplifiers with input offset trim and methods Jan. 24, 2012
8102203 Offset cancellation in a capacitively coupled amplifier Jan. 24, 2012
8098087 Method and apparatus for standby voltage offset cancellation Jan. 17, 2012
8099073 Noise reduction in amplifier circuitry using single-sideband chopper stabilization Jan. 17, 2012
8072261 Power amplifier Dec. 6, 2011
8072262 Low input bias current chopping switch circuit and method Dec. 6, 2011
8044686 Comparator circuit for generating binarized data Oct. 25, 2011

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