H03F2203/45522 - CPC Classification Index

#1

20250105855

2025-03-27

PROGRAMMABLE GAIN AMPLIFIER AND A DELTA SIGMA ANALOG-TO-DIGITAL CONVERTER CONTAINING THE PGA

#2

20230110204

2023-04-13

Programmable gain amplifier and a delta sigma analog-to-digital converter containing the PGA

#3

20200389178

2020-12-10

Programmable gain amplifier and a delta sigma analog-to-digital converter containing the PGA

#4

20190288702

2019-09-19

Programmable gain amplifier and a delta sigma analog-to-digital converter containing the PGA

#5

20190149105

2019-05-16

On-chip resistor divider compensation with a 2VRMS input

#6

20180342996

2018-11-29

SEMICONDUCTOR INTEGRATED CIRCUIT, VARIABLE GAIN AMPLIFIER, AND SENSING SYSTEM

#7

20180323750

2018-11-08

Sensor bias circuit for improved noise performance

#8

20180309418

2018-10-25

Preamplifier for musical instruments

#9

20180309413

2018-10-25

Correcting for non-linearity in an amplifier providing a differential output

#10

20180287559

2018-10-04

Circuits for wireless communication on multiple frequency bands

#11

20180269839

2018-09-20

Amplifier with nonlinearity compensation

#12

20180198421

2018-07-12

Circuit with voltage drop element

#13

20180120883

2018-05-03

Reference voltage generation circuit, regulator, and semiconductor device

#14

20180102404

2018-04-12

Impedance circuit with poly-resistor

#15

20180097492

2018-04-05

Semiconductor integrated circuit, variable gain amplifier, and sensing system

#16

20180062644

2018-03-01

Low capacitance analog switch or transmission gate

#17

20170141787

2017-05-18

Delta modulator receive channel for capacitance measurement circuits

#18

20170063315

2017-03-02

Amplifier with feedback circuit

#19

20170026030

2017-01-26

Multimode reconfigurable amplifier and analog filter including the same

#20

20160320783

2016-11-03

Reference voltage generation circuit including resistor arrangements

#21

20160308492

2016-10-20

Two-input amplifier

#22

20160276990

2016-09-22

Circuit device, physical-quantity detecting apparatus, electronic apparatus, and moving object

#23

20160268981

2016-09-15

Transimpedance amplifier (TIA) having an enlarged dynamic range and optical devices using the same

#24

20160248381

2016-08-25

Power amplification device and method

#25

20160211880

2016-07-21

Method and apparatus for detecting power

#26

20160164477

2016-06-09

Electric amplifier circuit for amplifying an output signal of a microphone

#27

20160099695

2016-04-07

Semiconductor integrated circuit, variable gain amplifier, and sensing system

#28

20160020735

2016-01-21

Power amplifier

#29

20150381129

2015-12-31

Variable gain transimpedance amplifier

#30

20150288337

2015-10-08

Reducing common mode transconductance in instrumentation amplifiers

#31

20150249435

2015-09-03

Analog amplifier for recovering abnormal operation of common mode feedback

#32

20150236661

2015-08-20

Amplification circuit, amplification device, AFE circuit, and signal processing system

#33

20150236648

2015-08-20

Amplifier with offset compensation

#34

20150214911

2015-07-30

Circuitry and methods for common-mode rejection calibration

#35

20150200635

2015-07-16

Operational transconductance amplifier, reconfigurable fully differential voltage sensing amplifier and reconfigurable fully differential capacitive sensing amplifier

#36

20150092819

2015-04-02

Sensor signal output circuit and method for adjusting it

#37

20150084688

2015-03-26

Baseband processing circuitry

#38

20150022268

2015-01-22

DC offset cancellation circuit

#39

20140340146

2014-11-20

Variable-gain dual-output transconductance amplifier-based instrumentation amplifiers

#40

20140293738

2014-10-02

Gain control circuit and ultrasonic image device

#41

20140145785

2014-05-29

Apparatus and methods for equalization

#42

20140142447

2014-05-22

Detection circuit for generating biological information

#43

20140132351

2014-05-15

Amplifier circuit

#44

20130293305

2013-11-07

Amplifier and filter having cutoff frequency controlled according to digital code

#45

20130281043

2013-10-24

Low noise amplifier

#46

20130266157

2013-10-10

Headphone amplifier

#47

20130257536

2013-10-03

Offset reduction for analog front-ends

#48

20130223649

2013-08-29

Load current sensing

#49

20130176082

2013-07-11

Reference voltage generation circuit, oscillation circuit including the same and method for calibrating oscillation frequency of oscillation circuit

#50

20130169363

2013-07-04

Body biasing device and operational amplifier thereof

#51

20130154740

2013-06-20

TECHNIQUES FOR PGA LINEARITY

#52

20130137388

2013-05-30

Semiconductor integrated circuit and radio receiver

#53

20130108080

2013-05-02

Audio output amplifier

#54

20130064394

2013-03-14

DIGITAL SIGNAL GENERATOR AND DIGITAL MICROPHONE

#55

20120326696

2012-12-27

Variable voltage generation circuit

#56

20120314880

2012-12-13

CM amplifier divided output supplying first, second, CM amplifier inputs

#57

20120293353

2012-11-22

Operational amplifier

#58

20120262230

2012-10-18

Amplifier crosstalk cancellation technique

#59

20120242389

2012-09-27

SENSOR CONTROL CIRCUIT AND SENSOR SYSTEM

#60

20120218036

2012-08-30

Offset component cancelation method and circuit

#61

20120178391

2012-07-12

Adjustable circuit architecture

#62

20120146721

2012-06-14

Voltage detection circuit

#63

20120119828

2012-05-17

Variable gain amplifier and audio device

#64

20120086434

2012-04-12

Wide-dynamic range electrometer with a fast response

#65

20120068769

2012-03-22

High-frequency differential amplifier circuit

#66

20120034875

2012-02-09

Radio apparatus having first and second amplifiers and which performs direct current offset correction of the first and second amplifiers

#67

20110261976

2011-10-27

Signal amplifying circuit and signal amplifying method

#68

20110181362

2011-07-28

Signal processing circuit

#69

20110150237

2011-06-23

Signal processing device and signal processing method

#70

20110133837

2011-06-09

VARIABLE GAIN AMPLIFIER

#71

20110110539

2011-05-12

Self-oscillating audio amplifier and method for restraining the improved self-oscillating audio amplifier

#72

20110109389

2011-05-12

Amplifier circuit, integrated circuit and radio frequency communication unit

#73

20110084760

2011-04-14

Highly efficient class-G amplifier and control method thereof

#74

20110028089

2011-02-03

Amplifying circuit, semiconductor integrated circuit, wireless transmission system, and communication apparatus

#75

20110025418

2011-02-03

Current to voltage converter

#76

20110018633

2011-01-27

Operational amplifier having DC offset cancellation capability

#77

20110012588

2011-01-20

Wide-dynamic range electrometer with a fast response

#78

20100297965

2010-11-25

Amplitude modulation controller for polar transmitter

#79

20100271130

2010-10-28

Amplifier circuit, integrated circuit device, and electronic instrument

#80

20100271126

2010-10-28

Matched integrated electronic components

#81

20100219886

2010-09-02

Broadband low noise amplifier

#82

20100219885

2010-09-02

Broadband low noise amplifier

#83

20100201437

2010-08-12

Tunable RF filter

#84

20100171549

2010-07-08

Variable gain amplifier circuit and filter circuit

#85

20100127772

2010-05-27

Feedback amplifier and audio system thererof

#86

20090284315

2009-11-19

Operational amplifier

#87

20090212983

2009-08-27

Integrated circuit device and electronic instrument

#88

20090212860

2009-08-27

Integrated circuit device and electronic instrument

#89

20090179700

2009-07-16

AC coupling circuits including resistive feedback and related methods and devices

#90

20090096524

2009-04-16

Differential amplification circuit and manufacturing method thereof

#91

20090079501

2009-03-26

Programmable gain circuit and amplification circuit

#92

20090009242

2009-01-08

Line driver capable of automatically adjusting output impedance

#93

20080279024

2008-11-13

Programmable boosting and charge neutralization

#94

20080252378

2008-10-16

Gain adjustment for programmable gain amplifiers

#95

20080240210

2008-10-02

Gain insensitive high-pass VGA

#96

20080232610

2008-09-25

Audio Amplifier with Reduced Noises

#97

20080197924

2008-08-21

Variable gain amplifier circuit and filter circuit

#98

20080157874

2008-07-03

Dynamic bandwidth compensating method and associated apparatus

#99

20080136458

2008-06-12

Method and system for wide range amplitude detection

#100

20080079494

2008-04-03

Broadband low noise amplifier

#101

20080070541

2008-03-20

Current converter, frequency mixer, radiofrequency transmission system and method for frequency mixing

#102

20080061873

2008-03-13

Gain adjustment for programmable gain amplifiers

#103

20080061872

2008-03-13

Gain adjustment for programmable gain amplifiers

#104

20070296481

2007-12-27

Offset adjusting apparatus

#105

20070273444

2007-11-29

Techniques for enabling a 10BT active output impedance line driver using a low power supply

#106

20070170974

2007-07-26

Amplifier feedback switch configuration with improved PSRR

#107

20070126501

2007-06-07

Variable gain amplifier and variable gain amplifier module

#108

20070090875

2007-04-26

Feedback circuit for an operational amplifier, a current to voltage converter including such a circuit and a digital to analog converter including such a circuit

#109

20070077904

2007-04-05

Gain insensitive high-pass VGA

#110

20070058703

2007-03-15

Current mode phase shifter, mixer and amplifier

#111

20060214827

2006-09-28

Amplifier gain calibration system and method

#112

20060197592

2006-09-07

VARIABLE GAIN AMPLIFIER

#113

20060109050

2006-05-25

Apparatus for removing DC offset and amplifying signal with variable gain simultaneously

#114

20060087370

2006-04-27

Charge amplifier

#115

20060001489

2006-01-05

Highly linear variable gain amplifier

#116

18957798

2025-02-25

Semi-log preamp with switched gains