ClassID:

219949

H03F2203/45288 - 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 Differential amplifier with circuit arrangements to enhance the transconductance

Recent Application in this class:
#1
20260142669
2026-05-21

OUTPUT STAGE OF A DIGITAL TO ANALOG CONVERTER

#2
20260095127
2026-04-02

WIDEBAND DISTRIBUTED AMPLIFIER IN A RECEIVER

#3
20260050280
2026-02-19

LOW DROPOUT VOLTAGE REGULATOR INCLUDING POWER SUPPLY NOISE SUPPRESSION CIRCUIT

#4
20250300616
2025-09-25

SYSTEMS AND METHODS FOR HIGH ACCURACY OPEN LOOP TRANSCONDUCTANCE AMPLIFIER HAVING GAIN SET BY OUTPUT LOAD

#5
20250253814
2025-08-07

LOW-NOISE LINEAR DYNAMIC AMPLIFIER

#6
20250192740
2025-06-12

CURRENT EQUALIZATION CIRCUITRY FOR THE FOLDED BRANCH OF A RAIL-TO-RAIL INPUT OTA WITH AB-CLASS OUTPUT STAGE

#7
20250123143
2025-04-17

DIFFERENTIAL TRANSIMPEDANCE AMPLIFIER FROM A SINGLE PHOTODIODE

#8
20250038721
2025-01-30

DUAL OUTPUT AMPLIFIER FOR PRECISION RESISTOR CALIBRATION SYSTEM

#9
20240429887
2024-12-26

OPERATIONAL TRANSCONDUCTANCE AMPLIFIER WITH BOOSTED TRANSCONDUCTANCE

#10
20240372459
2024-11-07

DRIVING DEVICE

#11
20240364286
2024-10-31

Amplifying circuit having supplemental transconductance and stable common-mode feedback

#12
20240364285
2024-10-31

NOISE CANCELLATION CIRCUIT

#13
20240297627
2024-09-05

TUNABLE TRANSCONDUCTOR

#14
20230327620
2023-10-12

Transconductance amplifier of high linearity and common-mode rejection

#15
20230291366
2023-09-14

TRANSIMPEDANCE AMPLIFIER CIRCUITS AND DEVICES

#16
20220052660
2022-02-17

Transconductor circuitry with adaptive biasing

#17
20210250006
2021-08-12

Output pole-compensated operational amplifier

#18
20210226531
2021-07-22

Switching converter with adaptive compensation

#19
20210013852
2021-01-14

Measuring current generation circuit

#20
20200395907
2020-12-17

Output pole-compensated operational amplifier

#21
20200389138
2020-12-10

High output current transconductance amplifier

#22
20200366260
2020-11-19

Method and system for a feedback transimpedance amplifier with sub-40khz low-frequency cutoff

#23
20200343869
2020-10-29

Transconductance boosted cascode compensation for amplifier

#24
20200321926
2020-10-08

Adaptable receiver amplifier

#25
20200244277
2020-07-30

Analog-digital converter, solid-state imaging element, and electronic equipment

#26
20200119697
2020-04-16

Sampled moving average notch filter for ripple reduction in chopper stabilized operational amplifiers

#27
20200112255
2020-04-09

Systems and methods for reducing switching loss in power conversion systems

#28
20200076390
2020-03-05

Process and temperature insensitive linear circuit

#29
20200021252
2020-01-16

Current amplifier

#30
20200014463
2020-01-09

Transimpedance amplifier for receiving burst optical signal

#31
20200007085
2020-01-02

Dynamic amplifier and related gain boosting method

#32
20190387326
2019-12-19

Microphone assembly with reduced noise

#33
20190372536
2019-12-05

Transconductor system for a power supply system

#34
20190348958
2019-11-14

Low-voltage differential signaling (LVDS) receiver circuit and a method of operating the LVDS receiver circuit

#35
20190342122
2019-11-07

Communicating across galvanic isolation

#36
20190341892
2019-11-07

Highly linear low noise transconductor

#37
20190280662
2019-09-12

Differential transimpedance amplifier

#38
20190229689
2019-07-25

Method and system for a feedback transimpedence amplifier with sub-40KHZ low-frequency cutoff

#39
20190199290
2019-06-27

Differential amplifier with complementary unit structure

#40
20190190463
2019-06-20

Amplifier circuit for cryogenic applications

#41
20190181806
2019-06-13

Differential transimpedance amplifier

#42
20190158033
2019-05-23

Transconductance shifted differential difference amplifier

#43
20190149111
2019-05-16

Amplifier with constant voltage gain

#44
20190149093
2019-05-16

AMPLIFIER WITH CONSTANT VOLTAGE GAIN

#45
20190140606
2019-05-09

Transconductor systems

#46
20190131945
2019-05-02

Process and temperature insensitive linear circuit

#47
20190115874
2019-04-18

Voltage range extension for difference amplifier

#48
20190044482
2019-02-07

Degenerated transimpedance amplifier with wire-bonded photodiode for reducing group delay distortion

#49
20190006948
2019-01-03

Systems and methods for reducing switching loss in power conversion systems

#50
20180287576
2018-10-04

Transconductance amplifier

#51
20180275703
2018-09-27

Fault Tolerant Voltage Regulator

#52
20180275250
2018-09-27

Unity gain buffer with two states

#53
20180269844
2018-09-20

Closed-loop automatic gain control in linear burst-mode transimpedance amplifier

#54
20180241359
2018-08-23

Amplifier, filter, communication apparatus and network node

#55
20180234763
2018-08-16

Microphone system having microphone transducer in feedback loop with adjustable frequency -3dB point and improved settling speed

#56
20180191319
2018-07-05

Differential input stage with wide input signal range and stable transconductance

#57
20180183394
2018-06-28

Dynamic amplifier and chip using the same

#58
20180182948
2018-06-28

Piezo actuator driver with slew rate protection

#59
20180157283
2018-06-07

Low-dropout linear regulator with super transconductance structure

#60
20180145650
2018-05-24

Split cascode circuits and related communication receiver architectures

#61
20180131342
2018-05-10

Transmipedance amplifier circuit, related integrated circuit, receiver circuit and method of operating a transimpedance amplifier circuit

#62
20180115335
2018-04-26

Low power supply voltage double-conversion radio frequency receiving front end

#63
20180102768
2018-04-12

Semiconductor device

#64
20180091231
2018-03-29

Transimpedance amplifier for high-speed optical communications based on linear modulation

#65
20180091105
2018-03-29

Operation amplifiers with offset cancellation

#66
20180091101
2018-03-29

Degenerated transimpedance amplifier with wire-bonded photodiode for reducing group delay distortion

#67
20180083574
2018-03-22

Configurable mixer

#68
20180055409
2018-03-01

Reconfigurable sensor circuit

#69
20180054168
2018-02-22

Frequency-compensated transconductance amplifier

#70
20180041132
2018-02-08

SYSTEMS AND METHODS FOR REDUCING SWITCHING LOSS IN POWER CONVERSION SYSTEMS

#71
20180034432
2018-02-01

Multi-data rate, burst-mode transimpedance amplifier (TIA) circuit

#72
20170366146
2017-12-21

Switched inductor/transformer for dual-band low-noise amplifier (LNA)

#73
20170359078
2017-12-14

Low-power conversion between analog and digital signals using adjustable feedback filter

#74
20170359042
2017-12-14

Variable gain distributed amplifier systems and methods

#75
20170346455
2017-11-30

Circuit for and method of receiving an input signal

#76
20170346454
2017-11-30

Transconductance amplifier having low distortion

#77
20170338782
2017-11-23

Method and system for a feedback transimpedance amplifier with sub-40khz low-frequency cutoff

#78
20170332973
2017-11-23

Multichannel ultra-low noise amplifier

#79
20170331440
2017-11-16

Trans-impedance amplifier with increased dynamic range

#80
20170317696
2017-11-02

Receiving a plurality of radio frequency bands

#81
20170302316
2017-10-19

Ultra-low-power RF receiver frontend with tunable matching networks

#82
20170288615
2017-10-05

Temperature compensated offset cancellation for high-speed amplifiers

#83
20170272046
2017-09-21

Split cascode circuits and related communication receiver architectures

#84
20170272038
2017-09-21

Offset correction circuit and transconductance proportional current generation circuit

#85
20170272036
2017-09-21

Front-end amplifier circuits for biomedical electronics

#86
20170250663
2017-08-31

Differential amplifier, receiver, and circuit

#87
20170238876
2017-08-24

Multi-channel neural signal amplifier system providing high CMRR across an extended frequency range

#88
20170230005
2017-08-10

Ultra-low working voltage rail-to-rail operational amplifier, and differential input amplification-stage circuit and output-stage circuit thereof

#89
20170207761
2017-07-20

Low noise amplifier circuit

#90
20170207760
2017-07-20

Dual port transimpedance amplifier with separate feedback

#91
20170201327
2017-07-13

Optical receiver with multiple transimpedance amplifiers

#92
20170187341
2017-06-29

Amplification circuit, optical module, and amplification method

#93
20170187339
2017-06-29

Adaptable receiver amplifier

#94
20170179910
2017-06-22

Wideband amplifier circuits and methods

#95
20170179897
2017-06-22

Programmable-gain amplifier, corresponding device and method

#96
20170163222
2017-06-08

Common-mode feedback circuit, corresponding signal processing circuit and method

#97
20170141787
2017-05-18

Delta modulator receive channel for capacitance measurement circuits

#98
20170104537
2017-04-13

Transimpedance amplifier, and related integrated circuit and optical receiver

#99
20170093449
2017-03-30

Circuits for field-programmable receiver front ends

#100
20170090497
2017-03-30

Fault tolerant voltage regulator

#101
20170077938
2017-03-16

Low-power conversion between analog and digital signals using adjustable feedback filter

#102
20170077884
2017-03-16

Differential transimpedance amplifier

#103
20170077311
2017-03-16

Amplifiers including tunable tunnel field effect transistor pseudo resistors and related devices

#104
20170067786
2017-03-09

Read circuit for POSFET type tactile sensor devices

#105
20170054456
2017-02-23

Receiving a plurality of radio frequency bands

#106
20170054417
2017-02-23

System and method for improving total harmonic distortion of an amplifier

#107
20170047937
2017-02-16

Method of forming an amplifier and structure therefor

#108
20170040963
2017-02-09

Operational amplifier with class AB output

#109
20170033795
2017-02-02

Driver circuit

#110
20170019080
2017-01-19

Gated CDS integrator

#111
20170005633
2017-01-05

Trans-impedance amplifier with replica gain control

#112
20160380598
2016-12-29

Pseudo-random chopper amplifier

#113
20160373078
2016-12-22

Method and system for a feedback transimpedance amplifier with sub-40KHZ low-frequency cutoff

#114
20160344352
2016-11-24

Instrumentation amplifier with digitally programmable input capacitance cancellation

#115
20160344289
2016-11-24

Microcontroller with average current measurement circuit using voltage-to-current converters

#116
20160329869
2016-11-10

Amplifier with compensation of gain in low frequencies

#117
20160329865
2016-11-10

Fractional mixer based tuner and tuning method

#118
20160327657
2016-11-10

Bootstrapping readout for large terminal capacitance analog-SiPM based time-of-flight PET detector

#119
20160315593
2016-10-27

Constant transconductance bias circuit

#120
20160315588
2016-10-27

Method for an adaptive transconductance cell utilizing arithmetic operations

#121
20160308501
2016-10-20

Electronic device for a radiofrequency signal reception chain, comprising a low-noise transimpedance amplifier stage

#122
20160301372
2016-10-13

Configurable transceiver circuit architecture

#123
20160294382
2016-10-06

Pass device with boost voltage regulation and current gain for VCSEL driving applications

#124
20160294332
2016-10-06

Gated CDS integrator

#125
20160294329
2016-10-06

Semiconductor device

#126
20160261246
2016-09-08

Transimpedance amplifier circuit

#127
20160254793
2016-09-01

CLOCK AND DATA DRIVERS WITH ENHANCED TRANSCONDUCTANCE AND SUPPRESSED OUTPUT COMMON-MODE

#128
20160233837
2016-08-11

Ground fault circuit interrupter and method

#129
20160226451
2016-08-04

Circuits and methods for switched-mode operational amplifiers

#130
20160181983
2016-06-23

LOW POWER OPERATIONAL TRANSCONDUCTANCE AMPLIFIER

#131
20160173041
2016-06-16

Hot-swap current-sensing system

#132
20160149548
2016-05-26

Trans-impedance amplifier with replica gain control

#133
20160065157
2016-03-03

Method and apparatus for gain enhancement of differential amplifier

#134
20150372648
2015-12-24

Transimpedance amplifier

#135
20150357981
2015-12-10

Transimpedance amplifier

#136
20150270805
2015-09-24

Apparatus and methods for autozero amplifiers

#137
20150200648
2015-07-16

Operational transconductance amplifier, operational transconductance amplifier-capacitor filter and high order reconfigurable analog filter

#138
20150162883
2015-06-11

Amplifier circuit

#139
20140340151
2014-11-20

Transconductance amplifier

#140
20140055200
2014-02-27

Low-voltage constant-gm rail-to-rail CMOS input stage with improved gain

#141
20130113563
2013-05-09

Gain enhancement for cascode structure

#142
20120007681
2012-01-12

Method and system for a feedback transimpedance amplifier with sub-40khz low-frequency cutoff

#143
20120001675
2012-01-05

Transconductance amplifier

#144
20110140782
2011-06-16

Differential gm-boosting circuit and applications

#145
20110121871
2011-05-26

Transconductance amplifier

#146
20110025418
2011-02-03

Current to voltage converter

#147
20110025402
2011-02-03

ADC chopping transconductor having two pairs of cascode transistors

#148
20100219886
2010-09-02

Broadband low noise amplifier

#149
20100219885
2010-09-02

Broadband low noise amplifier

#150
20100164616
2010-07-01

Chopping technique for continuous time sigma-delta ADCs without Q-noise folding

#151
20100141302
2010-06-10

Signal converting circuit

#152
20100007418
2010-01-14

Input system for a variable gain amplifier having class-AB transconductance stages

#153
20090302948
2009-12-10

Post amplifier with selectable gain

#154
20090289711
2009-11-26

Transconductance amplifier

#155
20090256636
2009-10-15

Amplifier arrangement and method for signal amplification

#156
20090115461
2009-05-07

Current converting method, transconductance amplifier and filter circuit using the same

#157
20090072908
2009-03-19

Gain control circuit and optical recording and reproducing device using thereof

#158
20090051439
2009-02-26

Transconductance signal capacity format

#159
20090027123
2009-01-29

Controlled transconductance differential stage

#160
20090027112
2009-01-29

CONTROLLABLE PRECISION TRANSCONDUCTANCE

#161
20090015330
2009-01-15

Variable transconductance circuit

#162
20080272821
2008-11-06

Signal converting circuit

#163
20080265992
2008-10-30

Transconductance stage arrangement

#164
20080238548
2008-10-02

Differential feedback amplifier circuit with cross coupled capacitors

#165
20080186091
2008-08-07

Dual transconductance amplifiers and differential amplifiers implemented using such dual transconductance amplifiers

#166
20080079494
2008-04-03

Broadband low noise amplifier

#167
20080068082
2008-03-20

Amplifier circuit and communication device

#168
20080048780
2008-02-28

Linearization apparatus of triode region type operational transconductance amplifier

#169
20080042734
2008-02-21

Voltage-controlled current source and frequency scanner using the same

#170
20080036537
2008-02-14

Wide-band low-noise CMOS amplifier

#171
20080024211
2008-01-31

Multi-operational amplifier system

#172
20080009255
2008-01-10

Peak detector and fixed gain amplifier circuit for automatic gain control and variable gain amplifier circuit

#173
20070290757
2007-12-20

Input system for a variable gain amplifier having class-AB transconductance stages

#174
20070285173
2007-12-13

Frequency compensating circuit including a current-mode active capacitor and control circuit

#175
20070222510
2007-09-27

System and method for operating a feedback network

#176
20070200628
2007-08-30

Gain boosting for tuned differential LC circuits

#177
20070188232
2007-08-16

Wideband CMOS gain stage

#178
20070139110
2007-06-21

Differential input and output transconductance circuit

#179
20070120599
2007-05-31

Multi-operational amplifier system

#180
20070115052
2007-05-24

Amplifiers with compensation

#181
20070103232
2007-05-10

Operational amplifier

#182
20070096807
2007-05-03

Transconductance amplifiers with compensation

#183
20070075774
2007-04-05

Variable gain amplifier

#184
20070069816
2007-03-29

Method for transconductance linearization for DC-coupled applications

#185
20070046368
2007-03-01

Circuit for creating tracking transconductors of different types

#186
20070030077
2007-02-08

Use of a thick oxide device as a cascode for a thin oxide transconductance device in MOSFET technology and its application to a power amplifier design

#187
20070024368
2007-02-01

Differential amplifiers with enhanced gain and dynamic range

#188
20070018725
2007-01-25

Variable transconductance circuit

#189
20070008035
2007-01-11

Wide-band high-gain limiting amplifier with parallel resistor-transistor source loads

#190
20070001758
2007-01-04

Multiple differential amplifier system and method for transconductance mismatch compensation

#191
20060250190
2006-11-09

Trans-conductance amplification circuit, trans-conductance filter circuit, and filtering method

#192
20060238254
2006-10-26

Input system for a variable gain amplifier having class-AB transconductance stages

#193
20060220748
2006-10-05

Use of a thick oxide device as a cascode for a thin oxide transconductance device in MOSFET technology and its application to a power amplifier design

#194
20060197598
2006-09-07

Low voltage structure for gain boosting in high gain amplifiers

#195
20060176106
2006-08-10

Current mode transconductor tuning device

#196
20060145762
2006-07-06

Gain boosting for tuned differential LC circuits

#197
20060125566
2006-06-15

Current mirror with low static current and transconductance amplifier thereof

#198
20060119436
2006-06-08

High linearity digital variable gain amplifier

#199
20060114065
2006-06-01

High linearity digital variable gain amplifier

#200
20060097786
2006-05-11

Low noise and high gain low noise amplifier

#201
20060091952
2006-05-04

High-swing folded cascode having a novel gain-boost amplifier

#202
20060066400
2006-03-30

Differential amplifier with cascade control

#203
20060066362
2006-03-30

Voltage-current conversion circuit, amplifier, mixer circuit, and mobile appliance using the circuit

#204
20060066361
2006-03-30

Apparatus and method for voltage conversion

#205
20060044068
2006-03-02

Bipolar differential to single ended transfer circuit with gain boost

#206
20060033579
2006-02-16

Trans-conductance amplification circuit, trans-conductance filter circuit, and filtering method

#207
20060028276
2006-02-09

CMOS-configured transconductance amplifier circuit

#208
20050280469
2005-12-22

Transconductance amplifier with temperature sensitive current limiting

#209
20050258902
2005-11-24

Wideband CMOS gain stage

#210
20050225391
2005-10-13

Output stage circut for an operational amplifier

#211
20050162230
2005-07-28

Multi-operational amplifier system

#212
20050134381
2005-06-23

Common mode feedback circuit for fully differential two-stage operational amplifiers

#213
20050088242
2005-04-28

Use of a thick oxide device as a cascode for a thin oxide transcoductance device in MOSFET technology and its application to a power amplifier design

#214
20050088234
2005-04-28

Transconductance amplifier

#215
20050057307
2005-03-17

Output stage circuit for an operational amplifier

#216
20050057304
2005-03-17

Single-ended input, differential output low noise amplifier

#217
20050046480
2005-03-03

Common mode feedback circuit for fully differential two-stage operational amplifiers

#218
20050046459
2005-03-03

Biasing technique using thin and thick oxide transistors

#219
16587949
2020-11-03

Versatile signal detector circuit using common mode shift with all-pass characteristics

#220
16234595
2020-05-19

Operational transconductance amplifier

#221
16128551
2019-07-30

Multi-mode clock transmission network and method thereof

#222
15928791
2019-04-23

Transconductance amplifier with nonlinear transconductance and low quiescent current

#223
15895829
2019-03-26

Self-biased operational transconductance amplifier-based reference circuit

#224
15854135
2019-03-05

Peak detector and operational amplifier circuit therein

#225
15808002
2019-02-05

Transconductor systems

#226
15442801
2018-07-10

Broadband differential trans-impedance amplifier (TIA)

#227
15278822
2018-01-09

Degenerated transimpedance amplifier with wire-bonded photodiode for reducing group delay distortion

#228
15227032
2017-10-10

Symmetrical positive and negative reference voltage generation

#229
15221928
2017-10-17

Amplification systems

#230
15213718
2018-07-03

Frequency enhanced active transistor

#231
15199578
2017-09-12

Current starved voltage comparator and selector

#232
14872328
2017-02-14

Auxiliary control of system offsets

#233
14836462
2019-03-19

Differential split-electrode feedthrough cancellation mechanism