ClassID:

219368

H03F3/4521 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements; Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit Complementary long tailed pairs having parallel inputs and being supplied in parallel

Sub-classes:
Recent Application in this class:
#1
20260142621
2026-05-21

LOW NOISE AMPLIFIER OPERATING IN X-BAND AND KU-BAND

#2
20260106583
2026-04-16

SEMICONDUCTOR DEVICES USING COMPLEMENTARY FIELD EFFECT TRANSISTORS (CFETS)

#3
20260068638
2026-03-05

SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

#4
20260045923
2026-02-12

DIFFERENTIAL SIGNAL GENERATION CIRCUIT

#5
20250183862
2025-06-05

DIFFERENTIAL AMPLIFIER WITH CONSTANT OPERATING CONDITIONS

#6
20250088158
2025-03-13

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

#7
20240348220
2024-10-17

AMPLIFIER CIRCUIT WITH DYNAMIC OUTPUT SLOPE COMPENSATION FOR DRIVING LARGE CAPACITIVE LOADS

#8
20240223140
2024-07-04

FOURTH-ORDER FEEDFORWARD-COMPENSATION OPERATIONAL AMPLIFIER AND METHOD FOR DESIGNING THE SAME

#9
20240178806
2024-05-30

COMPARATOR WITH REDUCED POWER CONSUMPTION

#10
20240125823
2024-04-18

CURRENT SENSOR

#11
20230290802
2023-09-14

Imaging apparatus

#12
20230091543
2023-03-23

Class A amplifier with push-pull characteristic

#13
20220231072
2022-07-21

Imaging apparatus

#14
20220094314
2022-03-24

Amplifier and receiving circuit, semiconductor apparatus, and semiconductor system using the same

#15
20210119586
2021-04-22

Operational amplifier, radio frequency circuit, and electronic device

#16
20210111680
2021-04-15

Interpolation operational amplifier circuit and display panel

#17
20210099139
2021-04-01

Differential amplifier with variable neutralization

#18
20200411498
2020-12-31

Apparatuses and methods for high sensitivity TSV resistance measurement circuit

#19
20200404208
2020-12-24

Electronic circuit for configuring amplifying circuit configured to output voltage including low noise

#20
20200266779
2020-08-20

Amplifier and receiving circuit, semiconductor apparatus, and semiconductor system using the same

#21
20200162685
2020-05-21

Imaging apparatus

#22
20200127620
2020-04-23

Power amplifier and electronic device

#23
20200112292
2020-04-09

Input receiver circuit and adaptive feedback method

#24
20200076380
2020-03-05

Differential amplifier with variable neutralization

#25
20200075568
2020-03-05

Apparatuses and methods for high sensitivity TSV resistance measurement circuit

#26
20200064876
2020-02-27

Voltage regulator circuitry

#27
20190326896
2019-10-24

Wide range input voltage differential receiver

#28
20190319597
2019-10-17

Active device which has a high breakdown voltage, is memory-less, traps even harmonic signals and circuits used therewith

#29
20190260334
2019-08-22

Operational amplifier circuit capable of improving linearity relation between loading current and input voltage difference

#30
20190199290
2019-06-27

Differential amplifier with complementary unit structure

#31
20190158033
2019-05-23

Transconductance shifted differential difference amplifier

#32
20190147825
2019-05-16

Output circuit and data driver of liquid crystal display device

#33
20190146530
2019-05-16

Low dropout (LDO) voltage regulator with soft-start circuit

#34
20190116331
2019-04-18

Amplifier, and analog-to-digital conversion circuit and image sensor including the same

#35
20190081604
2019-03-14

Apparatus and method for centrally controlling common mode voltages for a set of receivers

#36
20190075262
2019-03-07

High dynamic range CTIA pixel

#37
20190073940
2019-03-07

Display driver, electro-optical device, and electronic apparatus

#38
20190068144
2019-02-28

Bidirectional current sense amplifier

#39
20190006998
2019-01-03

Amplifier arrangement and switched capacitor integrator

#40
20180337642
2018-11-22

Operational amplifier circuit capable of improving linearity relation between loading current and input voltage difference

#41
20180302051
2018-10-18

Programmable gain stage based on width ratio of two MOSFETs

#42
20180269840
2018-09-20

Differential amplifier with variable neutralization

#43
20180262172
2018-09-13

Active device which has a high breakdown voltage, is memory-less, traps even harmonic signals and circuits used therewith

#44
20180254750
2018-09-06

Amplifier circuit

#45
20180212572
2018-07-26

Class AB amplifier having cascode stage with filter for improving linearity

#46
20180182948
2018-06-28

Piezo actuator driver with slew rate protection

#47
20180157283
2018-06-07

Low-dropout linear regulator with super transconductance structure

#48
20180144707
2018-05-24

Output circuit and data driver of liquid crystal display device

#49
20180123525
2018-05-03

Differential amplifier

#50
20180123524
2018-05-03

Single-ended amplifier circuit with improved chopper configuration

#51
20180054168
2018-02-22

Frequency-compensated transconductance amplifier

#52
20170373654
2017-12-28

System and method for a multistage operational amplifier

#53
20170336817
2017-11-23

Inverting amplifier receiving negative feedback voltage in voltage regulator

#54
20170332973
2017-11-23

Multichannel ultra-low noise amplifier

#55
20170272038
2017-09-21

Offset correction circuit and transconductance proportional current generation circuit

#56
20170207805
2017-07-20

High speed receivers circuits and methods

#57
20170085237
2017-03-23

Active device which has a high breakdown voltage, is memory-less, traps even harmonic signals and circuits used therewith

#58
20170085226
2017-03-23

Active device and circuits used therewith

#59
20170040952
2017-02-09

CIRCUITS AND METHODS PROVIDING AMPLIFICATION WITH INPUT COMMON MODE VOLTAGE FOLLOWING

#60
20170026030
2017-01-26

Multimode reconfigurable amplifier and analog filter including the same

#61
20160344355
2016-11-24

Amplifier circuit and method for adaptive amplifier biasing

#62
20160308566
2016-10-20

High speed receivers circuits and methods

#63
20160268977
2016-09-15

Active load circuit and semiconductor integrated circuit

#64
20160036397
2016-02-04

Semiconductor amplifier circuit

#65
20150256135
2015-09-10

Rail-to-rail follower circuits

#66
20150061767
2015-03-05

Telescopic Amplifier with Improved Common Mode Settling

#67
20140253240
2014-09-11

Circuit of operational amplifier

#68
20140112418
2014-04-24

Receiver using impedance shaping

#69
20140084999
2014-03-27

Apparatus and method for wide common mode difference

#70
20130257513
2013-10-03

Fully complementary self-biased differential receiver with startup circuit

#71
20130093519
2013-04-18

Positive and negative voltage input operational amplifier set

#72
20130021101
2013-01-24

DIFFERENTIAL AMPLIFIER HAVING RAIL-TO-RAIL INPUT VOLTAGE RANGE

#73
20130002644
2013-01-03

DIFFERENTIAL AMPLIFIER, METHOD FOR INVERTING OUTPUT POLARITY OF THE SAME, AND SOURCE DRIVER

#74
20130002636
2013-01-03

LCD driving circuit using operational amplifier and LCD display apparatus using the same

#75
20120188015
2012-07-26

Amplifier

#76
20120161991
2012-06-28

Offset cancellation for analog to digital converters

#77
20120146727
2012-06-14

Fast power up comparator

#78
20120133632
2012-05-31

OPERATIONAL AMPLIFIER AND DISPLAY DRIVING CIRCUIT USING THE SAME

#79
20120049957
2012-03-01

Operational amplifier with overdriving circuit and method for same

#80
20120038422
2012-02-16

Symmetrically operating single-ended input buffer devices and methods

#81
20110316629
2011-12-29

Offset cancellation for differential circuits

#82
20110291758
2011-12-01

Differential comparator circuit having a wide common mode input range

#83
20110205193
2011-08-25

Operational amplifier with decreased through current, and display panel driver and display device incorporating the same

#84
20110199157
2011-08-18

Differential amplifier, method for inverting output polarity of the same, and source driver

#85
20110163813
2011-07-07

Amplifier circuit

#86
20110157146
2011-06-30

Display driver circuit

#87
20110074510
2011-03-31

Symmetrically operating single-ended input buffer devices and methods

#88
20110032233
2011-02-10

LCD driving circuit using operational amplifier and LCD display apparatus using the same

#89
20100321360
2010-12-23

Differential signal receiving circuit and display apparatus

#90
20100283545
2010-11-11

Multi-path, multi-stage feed-forward operational amplifier circuit

#91
20100253432
2010-10-07

Signal processor comprising an amplifier

#92
20100225398
2010-09-09

Multi-path, multi-oxide-thickness amplifier circuit

#93
20100109774
2010-05-06

Operational amplifier

#94
20100073036
2010-03-25

High-speed low-voltage differential signaling system

#95
20100013558
2010-01-21

Driving circuit capable of enhancing response speed and related method

#96
20100007420
2010-01-14

Operational amplifier

#97
20090289930
2009-11-26

Operational amplifier circuit and display panel driving apparatus

#98
20090212864
2009-08-27

Preamplifier for receiver and method thereof

#99
20090201237
2009-08-13

Operational amplifier circuit and display apparatus using the same

#100
20090179876
2009-07-16

Buffer amplifier with minimized power consumption and display driver including the same

#101
20090167747
2009-07-02

TFT-LCD DRIVER CIRCUIT AND LCD DEVICES

#102
20090154255
2009-06-18

Symmetrically operating single-ended input buffer devices and methods

#103
20090146738
2009-06-11

Operational amplifier

#104
20090115517
2009-05-07

Apparatus and method for low power rail-to-rail operational amplifier

#105
20090108880
2009-04-30

Systems, Circuits and Methods for Extended Range Input Comparison

#106
20090079524
2009-03-26

MULTI-BAND TUNABLE RESONANT CIRCUIT

#107
20090039959
2009-02-12

Differential amplifier, method for amplifying signals of differential amplifier, and display driving device having differential amplifier

#108
20080278232
2008-11-13

Operational amplifier with rail-to-rail common-mode input and output range

#109
20080238497
2008-10-02

Operational amplifier having its compensator capacitance temporarily disabled

#110
20080186100
2008-08-07

Variable-gain amplification circuit, receiver and receiver IC

#111
20080180173
2008-07-31

Differential signal comparator

#112
20080174342
2008-07-24

Comparator with complementary differential input stages

#113
20080150858
2008-06-26

Display driver circuit

#114
20080122537
2008-05-29

Operational amplifier circuit

#115
20080111626
2008-05-15

Rail-to-rail class-AB operational amplifier

#116
20080100380
2008-05-01

Operational amplifier and display device

#117
20080079491
2008-04-03

Differential amplifier circuit

#118
20080055004
2008-03-06

Amplifiers, methods of increasing current gain in amplifiers, and imaging devices

#119
20080036538
2008-02-14

RAIL-TO-RAIL CLASS AB AMPLIFIER

#120
20080036536
2008-02-14

System and method for linearizing a CMOS differential pair

#121
20080001663
2008-01-03

Low voltage CMOS differential amplifier

#122
20070285165
2007-12-13

Low voltage CMOS differential amplifier

#123
20070273444
2007-11-29

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

#124
20070252753
2007-11-01

Multifunction-RF-circuit

#125
20070252652
2007-11-01

Dual op amp IC with single low noise op amp configuration

#126
20070236288
2007-10-11

Apparatus for amplifying differential signal

#127
20070182487
2007-08-09

Differential amplifier and operational amplifier

#128
20070164974
2007-07-19

Output buffer with improved output deviation and source driver for flat panel display having the output buffer

#129
20070146063
2007-06-28

Differential amplifier circuit operable with wide range of input voltages

#130
20070075688
2007-04-05

Differential input/differential output converter circuit

#131
20070001761
2007-01-04

Differential amplifier and operational amplifier

#132
20060279509
2006-12-14

Operational amplifier with constant offset and apparatus comprising such as operational amplifier

#133
20060261891
2006-11-23

Low voltage CMOS differential amplifier

#134
20060226908
2006-10-12

Differential amplifying method and apparatus operable with a wide range input voltage

#135
20060139097
2006-06-29

Low voltage CMOS differential amplifier

#136
20060139085
2006-06-29

Differential circuit and receiver with same

#137
20060097759
2006-05-11

Current driver

#138
20060012431
2006-01-19

Class AB amplifier having adjustable quiescent current and output current

#139
20060012430
2006-01-19

Low-voltage differential amplifier

#140
20050261797
2005-11-24

Multi-band tunable resonant circuit

#141
20050227627
2005-10-13

Programmable radio transceiver

#142
20050212604
2005-09-29

Programmable radio transceiver

#143
20050195032
2005-09-08

Differential amplifier with large input common mode signal range

#144
20050184804
2005-08-25

Differential amplifier and semiconductor device

#145
20050156666
2005-07-21

Low-voltage differential amplifier

#146
20050151587
2005-07-14

Differential amplifier and calculation amplifier

#147
20050146364
2005-07-07

Charge pump including a feedback device for use in a phase-locked loop

#148
20050093629
2005-05-05

Differential amplifying circuit

#149
20050083031
2005-04-21

Semiconductor integrated circuit device enabling to produce a stable constant current even on a low power-source voltage

#150
20050073358
2005-04-07

Differential amplifier circuit and drive circuit of liquid crystal display unit using the same

#151
20050068105
2005-03-31

Differential AB class amplifier circuit and drive circuit using the same

#152
20050040889
2005-02-24

Differential amplifier, data driver and display device

#153
20050017809
2005-01-27

Semiconductor integrated circuit

#154
18415778
2025-10-07

Complementary current reuse even harmonic frequency multiplier

#155
16143123
2020-07-07

High-speed low VT drift receiver

#156
15854135
2019-03-05

Peak detector and operational amplifier circuit therein

#157
15821616
2019-04-23

Low-power differential amplifier with improved unity gain frequency

#158
15785294
2019-02-19

Low-power wide-swing sense amplifier with dynamic output stage biasing

#159
15717865
2019-04-30

Wide range input voltage differential receiver

#160
15640736
2017-11-21

Integrator and A/D converter using the same

#161
15152206
2017-01-10

Differential amplifier circuit and semiconductor memory device including same