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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
8680915 Techniques to reduce memory effect or inter-symbol interference (ISI) in circuits using op-amp sharing Mar. 25, 2014
8674766 Differential amplifier stage with integrated offset cancellation circuit Mar. 18, 2014
8659350 Circuit for an amplifier Feb. 25, 2014
8643432 Op-Amp sharing by swapping trans-conductance cells Feb. 4, 2014
8638164 Amplifier including dithering switch and display driving circuit using the amplifier Jan. 28, 2014
8638165 Switched-capacitor DC blocking amplifier Jan. 28, 2014
8638166 Apparatus and methods for notch filtering Jan. 28, 2014
8624653 Circuit and method for determining comparator offsets of electronic devices Jan. 7, 2014
8626098 Automatic gain control with programmable attack and decay times Jan. 7, 2014
8624669 DC offset compensation Jan. 7, 2014
8624668 Common-mode step response for autozero amplifiers Jan. 7, 2014
8618874 Calibration of signal processing apparatus Dec. 31, 2013
8611561 First stage audio amplifier with clamping circuit Dec. 17, 2013
8610496 Switched amplifier circuit arrangement and method for switched amplification Dec. 17, 2013
8610465 Comparator circuit Dec. 17, 2013
8604859 DC-offset correction circuit Dec. 10, 2013
8587372 Multi-input differential amplifier and light emitting element driving device Nov. 19, 2013
8576001 Offset compensation apparatus for magnetic detection circuit and method thereof Nov. 5, 2013
8576002 ADC preamplifier and the multistage auto-zero technique Nov. 5, 2013
8558288 Methods and apparatus for measuring analytes using large scale FET arrays Oct. 15, 2013
8552798 Method for offset compensation of a switched-capacitor amplifier and switched capacitor amplifier arrangement Oct. 8, 2013
8552660 Drive circuit for parallel array of light emitting diodes Oct. 8, 2013
8542066 Apparatus and methods for reducing output noise of a signal channel Sep. 24, 2013
8536923 Integrator distortion correction circuit Sep. 17, 2013
8531238 Multi-stage fully differential amplifier with controlled common mode voltage Sep. 10, 2013
8531239 Differential amplifying apparatus Sep. 10, 2013
8525586 Gain stage with DC offset compensation and method thereof Sep. 3, 2013
8514014 Reset and resettable circuits Aug. 20, 2013
8508217 Output circuit of charge mode sensor Aug. 13, 2013
8508290 Interface for MEMS inertial sensors Aug. 13, 2013
8497733 Offset correction circuit Jul. 30, 2013
8493139 Low noise auto-zero circuits for amplifiers Jul. 23, 2013
8487697 Fully differential autozeroing amplifier Jul. 16, 2013
8482352 Differential amplifier stage with integrated offset cancellation circuit Jul. 9, 2013
8476970 Interface for MEMS inertial sensors Jul. 2, 2013
8476973 Switch device and layout design method for switch device Jul. 2, 2013
8471630 Fast settling reference voltage buffer and method thereof Jun. 25, 2013
8471631 Bias circuit, power amplifier, and current mirror circuit Jun. 25, 2013
8471794 Driving circuit for display apparatus, and method for controlling same Jun. 25, 2013
8461922 Offset component cancelation method and circuit Jun. 11, 2013
8456233 Chopper Jun. 4, 2013
8457192 Pulse width modulator Jun. 4, 2013
8447046 Circuit with three-stage of power-on sequence used for suppressing the pop noise in audio system May. 21, 2013
8441386 Method to reduce voltage swing at comparator input of successive-approximations-register analog-to-digital converters May. 14, 2013
8416106 Calibration scheme for resolution scaling, power scaling, variable input swing and comparator offset cancellation for flash ADCs Apr. 9, 2013
8416968 Audio device and audio input/output method Apr. 9, 2013
8395432 Contactless electrical potential sensor circuit Mar. 12, 2013
8395418 Voltage sensing circuit with reduced susceptibility to gain drift Mar. 12, 2013
8390372 Sample-and-hold amplifier Mar. 5, 2013
8390496 System and method for common mode translation Mar. 5, 2013

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