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Class Information
Number: 327/554
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific identifiable device, circuit, or system > Unwanted signal suppression > Active filter > Adjustable > Switched capacitor filter
Description: Subject matter wherein a filter transfer function is determined by a particular capacitor arrangement which is variable dependent upon the switched connections controlled by an input clock signal.










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8710920 Charge domain filter and method thereof Apr. 29, 2014
8692612 Electronic device for regulating a variable capacitance of an integrated circuit Apr. 8, 2014
8674753 Systems and methods for cancelling phase-locked loop supply noise Mar. 18, 2014
8664998 Adaptive filter circuit for sampling a reflected voltage of transformer in a power converter and method thereof Mar. 4, 2014
8665012 Analog filter with adjustable filter frequency Mar. 4, 2014
8665011 Micro electro-mechanical system circuit capable of compensating capacitance variation and method thereof Mar. 4, 2014
8618872 Filter with controlled cut-off frequency step-down Dec. 31, 2013
8604956 Resonator and oversampling A/D converter Dec. 10, 2013
8593217 Finite input response filter in a voltage-mode driver Nov. 26, 2013
8587371 Electric circuit for reducing energy consumption Nov. 19, 2013
8575988 Mixed-signal integrator architecture Nov. 5, 2013
8570100 Direct sampling circuit and receiver Oct. 29, 2013
8558607 Charge-domain filter and method thereof Oct. 15, 2013
8552375 Switched capacitor filter systems and methods Oct. 8, 2013
8547170 Multimode integration circuit for sensor readout Oct. 1, 2013
8541992 Voltage converter Sep. 24, 2013
8538364 Filter circuit and receiver using the same Sep. 17, 2013
8525584 Automatic cutoff frequency adjusting circuit and portable digital assistant Sep. 3, 2013
8519877 Low noise and low power arrangement for playing audio signals Aug. 27, 2013
8508290 Interface for MEMS inertial sensors Aug. 13, 2013
8497746 Switched-capacitor band-pass filter of a discrete-time type, in particular for cancelling offset and low-frequency noise of switched-capacitor stages Jul. 30, 2013
8498606 Data rate tracking filter Jul. 30, 2013
8493138 Memcapacitive devices Jul. 23, 2013
8487693 Self calibrated, broadband, tunable, active oscillator with unity gain cells for multi-standard and/or multiband channel selection Jul. 16, 2013
8487694 Charge domain filter apparatus Jul. 16, 2013
8476970 Interface for MEMS inertial sensors Jul. 2, 2013
8471721 Server rack having payload weighing function Jun. 25, 2013
8461917 Complimentary single-ended-input OTA-C universal filter structures Jun. 11, 2013
8461918 Switched capacitor circuit Jun. 11, 2013
8456231 Filter circuit Jun. 4, 2013
8451051 Dual mode sigma delta analog to digital converter and circuit using the same May. 28, 2013
8441386 Method to reduce voltage swing at comparator input of successive-approximations-register analog-to-digital converters May. 14, 2013
8432386 Switch device for source driver of liquid crystal display and operating method thereof Apr. 30, 2013
8421519 Switched charge storage element network Apr. 16, 2013
8416014 Switched capacitor notch filter with fast response time Apr. 9, 2013
8410844 Filter device and control method of the same Apr. 2, 2013
8412131 Down conversion filter and communication receiving apparatus Apr. 2, 2013
8400159 Casing correction in non-magnetic casing by the measurement of the impedance of a transmitter or receiver Mar. 19, 2013
8390371 Tunable transconductance-capacitance filter with coefficients independent of variations in process corner, temperature, and input supply voltage Mar. 5, 2013
8390370 Filter circuit and communication device Mar. 5, 2013
8385867 Tracking filter for a television tuner Feb. 26, 2013
8373502 Gm-C filter tuning circuit based on relaxation oscillator Feb. 12, 2013
8362939 Switched-capacitor pipeline ADC stage Jan. 29, 2013
8344796 Switched capacitor circuit Jan. 1, 2013
8344794 Signal monitoring systems Jan. 1, 2013
8344795 Self-calibrated, broadband, tunable, active filter with unity gain cells for multi-standard and/or multiband channel selection Jan. 1, 2013
8339215 Charge domain filter with controllable transfer functions and transfer function control methods thereof Dec. 25, 2012
8324961 Charge domain filter and bandwidth compensation circuit thereof Dec. 4, 2012
8310388 Subrange analog-to-digital converter and method thereof Nov. 13, 2012
8305136 Switchable capacitive element with improved quality factor, and method of production Nov. 6, 2012

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