ClassID:

219873

H03F2203/45136 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by; Indexing scheme relating to differential amplifiers One differential amplifier in IC-block form being shown

Recent Application in this class:
#1
20250088158
2025-03-13

INPUT STAGE CIRCUIT FOR AN OPERATIONAL AMPLIFIER WITH ENHANCED INPUT OFFSET VOLTAGE TRIMMING CAPABILITIES

#2
20200220510
2020-07-09

Circuit arrangement and a method for operating a circuit arrangement

#3
20190253024
2019-08-15

Flame scanner having non-linear amplifier with temperature compensation

#4
20190132163
2019-05-02

DC offset cancellation and crosspoint control circuit

#5
20190131935
2019-05-02

Circuit having high-pass filter with variable corner frequency

#6
20190115874
2019-04-18

Voltage range extension for difference amplifier

#7
20190013819
2019-01-10

Digital-to-analog converter circuit, corresponding device and method

#8
20180269839
2018-09-20

Amplifier with nonlinearity compensation

#9
20180219518
2018-08-02

Power supplying apparatus for neural activity recorder reducing common-mode signal applied to electrodes connected to the neural activity recorder

#10
20180062588
2018-03-01

FBDDA amplifier and device including the FBDDA amplifier

#11
20170353165
2017-12-07

Differential amplifiers

#12
20170310290
2017-10-26

Amplifiers

#13
20170063315
2017-03-02

Amplifier with feedback circuit

#14
20160365859
2016-12-15

Wideband highly-linear low output impedance D2S buffer circuit

#15
20160315593
2016-10-27

Constant transconductance bias circuit

#16
20160276071
2016-09-22

Apparatus and methods for generating a precise resistor

#17
20160218688
2016-07-28

Preamplifier circuit for a microelectromechanical capacitive acoustic transducer

#18
20160164477
2016-06-09

Electric amplifier circuit for amplifying an output signal of a microphone

#19
20160156319
2016-06-02

FBDDA amplifier and device including the FBDDA amplifier

#20
20160072458
2016-03-10

Detecting device and electronic apparatus

#21
20150357980
2015-12-10

Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier

#22
20150256137
2015-09-10

Formant amplifier

#23
20150256131
2015-09-10

Constant transconductance bias circuit

#24
20150002228
2015-01-01

Amplifier with improved noise reduction

#25
20140037113
2014-02-06

Preamplifier circuit for a microelectromechanical capacitive acoustic transducer

#26
20130208922
2013-08-15

Integrated amplifier for driving acoustic transducers

#27
20130064394
2013-03-14

DIGITAL SIGNAL GENERATOR AND DIGITAL MICROPHONE

#28
20130002348
2013-01-03

Amplifier with improved noise reduction

#29
20120308052
2012-12-06

Microphone assembly

#30
20120223696
2012-09-06

Systems and methods for current sensing over an extended area

#31
20120170774
2012-07-05

AMPLIFIER CIRCUIT

#32
20120126892
2012-05-24

Reference voltage generator for biasing an amplifier

#33
20120119828
2012-05-17

Variable gain amplifier and audio device

#34
20120112838
2012-05-10

RF power amplifier and RF power module using the same

#35
20120112798
2012-05-10

Filter comprising a current-to-voltage converter

#36
20120092055
2012-04-19

Electronic device and method for kickback noise reduction of switched capacitive loads and method of operating the electronic device

#37
20120013351
2012-01-19

METHOD FOR CONVERTING A SENSOR CAPACITANCE UNDER PARASITIC CAPACITANCE CONDITIONS AND A CAPACITANCE-TO-VOLTAGE CONVERTER CIRCUIT

#38
20120001689
2012-01-05

Nanoelectronic differential amplifiers and related circuits implemented on a segment of a graphene nanoribbon

#39
20110309863
2011-12-22

Differential amplifier, sample-and-hold circuit, and amplifier circuit

#40
20110298642
2011-12-08

CURRENT TRIMMING CIRCUIT AND A/D CONVERTER INCLUDING CURRENT TRIMMING CIRCUIT

#41
20110241772
2011-10-06

Error amplifier for regulating single feedback input at multiple levels

#42
20110193623
2011-08-11

Large time constant steering circuit and instrumentation amplifier implementing same

#43
20110181336
2011-07-28

Output buffer circuit and method for avoiding voltage overshoot

#44
20110175583
2011-07-21

High voltage regulated power supply

#45
20110156690
2011-06-30

Reference voltage generation circuit with start-up circuit

#46
20110062313
2011-03-17

Nanoelectronic differential amplifiers and related circuits having graphene nanoribbons

#47
20110032031
2011-02-10

Amplifier circuit and light receiving amplifier circuit using the same

#48
20100329487
2010-12-30

Preamplifier circuit for a microelectromechanical capacitive acoustic transducer

#49
20100295614
2010-11-25

Amplifying device

#50
20100283652
2010-11-11

Semiconductor device and differential amplifier circuit therefor

#51
20100274114
2010-10-28

Signal sensing in an implanted apparatus with an internal reference

#52
20100271126
2010-10-28

Matched integrated electronic components

#53
20100254549
2010-10-07

Amplifier circuit of capacitor microphone

#54
20100246848
2010-09-30

Motional feedback system

#55
20100237943
2010-09-23

Auto gain controllers, and communication terminals having the same

#56
20100202178
2010-08-12

Offset removal circuit, associative memory including the same, and offset voltage removal method

#57
20100201437
2010-08-12

Tunable RF filter

#58
20100197244
2010-08-05

Direct coupled radio frequency (RF) transceiver front end

#59
20100194481
2010-08-05

RF power amplifier and RF power module using the same

#60
20100171549
2010-07-08

Variable gain amplifier circuit and filter circuit

#61
20100134173
2010-06-03

Integrator-based common-mode stabilization technique for pseudo-differential switched-capacitor circuits

#62
20100103005
2010-04-29

Self auto-calibration of analog circuits in a mixed signal integrated circuit device

#63
20100066581
2010-03-18

Sample/hold circuit, and analog-to-digital converter

#64
20100060324
2010-03-11

Voltage/current conversion circuit

#65
20100052785
2010-03-04

Differential amplifier, sample-and-hold circuit, and amplifier circuit

#66
20100045382
2010-02-25

Bias circuit and semiconductor integrated circuit including the bias circuit

#67
20100013558
2010-01-21

Driving circuit capable of enhancing response speed and related method

#68
20100013050
2010-01-21

Compensation of field effect on polycrystalline resistors

#69
20100001760
2010-01-07

Programmable system on a chip for power-supply voltage and current monitoring and control

#70
20090302964
2009-12-10

Circulator type monolithic device

#71
20090302944
2009-12-10

Noise-shaped blocker-reject amplifier

#72
20090295363
2009-12-03

Voltage reference with improved linearity addressing variable impedance characteristics at output node

#73
20090292937
2009-11-26

Programmable system on a chip

#74
20090289702
2009-11-26

Current generator

#75
20090285416
2009-11-19

Speaker driver circuit driven by positive and negative voltages

#76
20090284316
2009-11-19

Amplifier device

#77
20090284242
2009-11-19

System and method for generating a reference voltage

#78
20090261904
2009-10-22

Multi-input operational amplifier and method for reducing input offset thereof

#79
20090243718
2009-10-01

High-speed modulator driver circuit with enhanced drive capability

#80
20090243717
2009-10-01

Compact high-speed modulator driver method and apparatus

#81
20090231037
2009-09-17

Telescopic operational amplifier and reference buffer utilizing the same

#82
20090231029
2009-09-17

Combination offset voltage and bias current auto-zero circuit

#83
20090214057
2009-08-27

Microphone bias circuits

#84
20090212983
2009-08-27

Integrated circuit device and electronic instrument

#85
20090212830
2009-08-27

Buffer device for switched capacitance circuit

#86
20090207063
2009-08-20

Variable passive components with high resolution value selection and control

#87
20090196435
2009-08-06

System and method of reducing click and pop noise in audio playback devices

#88
20090195319
2009-08-06

Large time constant steering circuit and instrumentation amplifier implementing same

#89
20090184770
2009-07-23

Device and method for biasing a transistor amplifier

#90
20090167577
2009-07-02

Circuit and method for calibrating direct current offset

#91
20090161890
2009-06-25

Micro-electro-mechanical systems (MEMS) capacitive sensing circuit

#92
20090161275
2009-06-25

INTEGRATED CONTROLLING CHIP

#93
20090153246
2009-06-18

Method and system for varying gain exponentially with respect to a control signal

#94
20090128186
2009-05-21

Programmable system on a chip for power-supply voltage and current monitoring and control

#95
20090115715
2009-05-07

LIQUID CRYSTAL DISPLAY SOURCE DRIVER INTEGRATED CIRCUIT

#96
20090115523
2009-05-07

Discrete time amplifier circuit and analong-digital converter

#97
20090115509
2009-05-07

Systems and methods for isolating an analog signal

#98
20090096523
2009-04-16

Differential amplification circuit

#99
20090086072
2009-04-02

Dual CDS/PxGA circuit for adjusting gain of an amplifier based on capacitance

#100
20090085657
2009-04-02

Compensation of field effect on polycrystalline resistors

#101
20090079501
2009-03-26

Programmable gain circuit and amplification circuit

#102
20090058526
2009-03-05

Common mode feedback amplifier with switched differential capacitor

#103
20090051428
2009-02-26

AGC CIRCUIT

#104
20090039975
2009-02-12

Electrical multiple-wire system for push-pull signal transmission with an attenuating or filtering element and data transmission bus

#105
20090039862
2009-02-12

Voltage transformation circuit

#106
20090033483
2009-02-05

Amplifier for multi-use of single environmental sensor

#107
20090021284
2009-01-22

Low voltage differential signal receiver

#108
20090015337
2009-01-15

Device and method for biasing a transistor amplifier

#109
20080315949
2008-12-25

Variable gain amplifier insensitive to process voltage and temperature variations

#110
20080309393
2008-12-18

Clock-generator architecture for a programmable-logic-based system on a chip

#111
20080303591
2008-12-11

Amplifying circuit and associated linearity improving method

#112
20080303547
2008-12-11

Programmable system on a chip for temperature monitoring and control

#113
20080298605
2008-12-04

Half-voltage headphone driver circuit

#114
20080290941
2008-11-27

Nanoelectronic differential amplifiers and related circuits having carbon nanotubes, graphene nanoribbons, or other related materials

#115
20080285188
2008-11-20

Composite integrated semiconductor device

#116
20080272843
2008-11-06

Integrated Amplifier Circuit

#117
20080272825
2008-11-06

SELECTION CIRCUIT

#118
20080272803
2008-11-06

System-on-a-chip integrated circuit including dual-function analog and digital inputs

#119
20080258811
2008-10-23

Distributed class G type amplifier switching method

#120
20080252378
2008-10-16

Gain adjustment for programmable gain amplifiers

#121
20080246544
2008-10-09

Offset adjustment device, semiconductor device, display device, offset adjustment method, noise detection device, and noise detection method

#122
20080224731
2008-09-18

Non-volatile memory architecture for programmable-logic-based system on a chip

#123
20080204567
2008-08-28

SAMPLE AND HOLD CIRCUITS WITH BUFFER OFFSET REMOVED

#124
20080204106
2008-08-28

Signal adjustment techniques

#125
20080197924
2008-08-21

Variable gain amplifier circuit and filter circuit

#126
20080197890
2008-08-21

Light receiving circuit

#127
20080180294
2008-07-31

Variable passive components with high resolution value selection and control

#128
20080164945
2008-07-10

Simple operational amplifiers circuit and alternative circuit of latch circuit

#129
20080157846
2008-07-03

DC offset calibration apparatus and method

#130
20080150631
2008-06-26

Biosignal amplifying device

#131
20080142687
2008-06-19

Driving circuit for backlight module

#132
20080136525
2008-06-12

Current pre-amplifier and associated current comparator

#133
20080136463
2008-06-12

Method and system for an LC resonant current gain boosting amplifier

#134
20080122484
2008-05-29

Integrated circuit device having state-saving and initialization feature

#135
20080122481
2008-05-29

Programmable system on a chip

#136
20080111621
2008-05-15

Amplifier circuit and method for reducing voltage and current noise

#137
20080106330
2008-05-08

Feedback amplifier circuit operable at low voltage by utilizing switched operational amplifier and chopper modulator

#138
20080088372
2008-04-17

Subtractor circuit and operational amplifier

#139
20080074167
2008-03-27

Selecting circuit

#140
20080063219
2008-03-13

CONTROLLING AUDIO OUTPUT OF A MOBILE TERMINAL

#141
20080061873
2008-03-13

Gain adjustment for programmable gain amplifiers

#142
20080061872
2008-03-13

Gain adjustment for programmable gain amplifiers

#143
20080061840
2008-03-13

Receiver circuit having compensated offset voltage

#144
20080061822
2008-03-13

Programmable system on a chip for power-supply voltage and current monitoring and control

#145
20080054999
2008-03-06

Input offset voltage corrector

#146
20080054391
2008-03-06

Monolithic silicon-based photonic receiver

#147
20080048778
2008-02-28

Amplifier with common-mode feedback circuit

#148
20080048717
2008-02-28

Programmable system on a chip

#149
20080048715
2008-02-28

Programmable system on a chip for power-supply voltage and current monitoring and control

#150
20080042890
2008-02-21

Method, apparatus and system sharing an operational amplifier between two stages of pipelined ADC and/or two channels of signal processing circuitry

#151
20080042744
2008-02-21

Output circuit of vacuum-tube amplifier

#152
20080036442
2008-02-14

Constant-current circuit and system power source using this constant-current circuit

#153
20080032648
2008-02-07

Ultra wide band, differential input/output, high frequency active combiner in an integrated circuit

#154
20080024222
2008-01-31

Voltage level shifting circuit, a differential input stage circuit, and a method for providing a level shifted differential signal to a differential input buffer circuit

#155
20080024209
2008-01-31

Integrator and error amplifier

#156
20080012634
2008-01-17

Programmable gain amplifier

#157
20080007443
2008-01-10

Input interface circuit adapted to both of analog and digital signals

#158
20080007337
2008-01-10

Distributed class G type amplifier switching method

#159
20080001665
2008-01-03

Ultra wide band, differential input/output, high frequency active splitter in an integrated circuit

#160
20070296481
2007-12-27

Offset adjusting apparatus

#161
20070291930
2007-12-20

Output stacking architecture for an amplifier

#162
20070290753
2007-12-20

Method and system for varying gain exponentially with respect to a control signal

#163
20070290746
2007-12-20

Control of an adjustable gain amplifier

#164
20070290726
2007-12-20

Driving device and driving method

#165
20070288183
2007-12-13

ANALOG SIGNAL TRANSITION DETECTOR

#166
20070285855
2007-12-13

Composite integrated semiconductor device

#167
20070273441
2007-11-29

Amplifier

#168
20070273411
2007-11-29

Amplifier with pulse coded output and remote signal reconstruction from the pulse output

#169
20070252616
2007-11-01

Programmable system on a chip for temperature monitoring and control

#170
20070229136
2007-10-04

Reference voltage driving circuit with a compensating circuit

#171
20070200622
2007-08-30

Modulator apparatus operating at low supply voltage, and corresponding method of modulation

#172
20070194844
2007-08-23

Switched capacitor amplifier circuit and method for operating a switched capacitor amplifier circuit

#173
20070194813
2007-08-23

Variable passive components with high resolution value selection and control

#174
20070194809
2007-08-23

Output stage with low output impedance and operating from a low power supply

#175
20070182488
2007-08-09

Differential amplifying system

#176
20070176631
2007-08-02

PROGRAMMABLE SYSTEM ON A CHIP

#177
20070170974
2007-07-26

Amplifier feedback switch configuration with improved PSRR

#178
20070164794
2007-07-19

DIFFERENTIAL PAIR SIGNAL LINES MATCHING CIRCUIT

#179
20070142015
2007-06-21

Apparatus for voltage level temperature compensation

#180
20070132505
2007-06-14

Reference voltage generation circuit

#181
20070115068
2007-05-24

Method and apparatus for generating an optimized reference current threshold

#182
20070108957
2007-05-17

Constant-current circuit and system power source using this constant-current circuit

#183
20070097575
2007-05-03

Output circuit and current source circuit used in the same

#184
20070096773
2007-05-03

Sample and hold circuit with multiple channel inputs, and analog-digital converter incorporating the same

#185
20070090880
2007-04-26

Operational amplifier for outputting high voltage output signal

#186
20070090878
2007-04-26

Ultra high linearity amplifier

#187
20070058438
2007-03-15

Differential amplifier circuit and semiconductor device

#188
20070046325
2007-03-01

System-on-a-chip integrated circuit including dual-function analog and digital inputs

#189
20070040580
2007-02-22

Reference buffer with improved drift

#190
20060273849
2006-12-07

Operational amplifier circuit having adjustable bias current

#191
20060255832
2006-11-16

Non-volatile memory architecture for programmable-logic-based system on a chip

#192
20060234650
2006-10-19

Low voltage differential signaling transceiver

#193
20060181305
2006-08-17

Integrated circuit including programmable logic and external-device chip-enable override control

#194
20060119385
2006-06-08

Programmable system on a chip for power-supply voltage and current monitoring and control

#195
20060068741
2006-03-30

Reducing noise and distortion in a receiver system

#196
20060049868
2006-03-09

Reference voltage driving circuit with a compensating circuit and a compensating method of the same

#197
20060012432
2006-01-19

Pulse length matched filter

#198
20060001489
2006-01-05

Highly linear variable gain amplifier

#199
20050271162
2005-12-08

Techniques to adjust vertical offset

#200
20050237083
2005-10-27

Programmable system on a chip