ClassID:

219428

H03F3/45479 - 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 common mode signal rejection

Sub-classes:
Recent Application in this class:
#1
20260149424
2026-05-28

Audio input circuit capable of preventing deterioration of total harmonic distortion

#2
20260012146
2026-01-08

CLASS-D AMPLIFIER

#3
20250088159
2025-03-13

CURRENT SENSE AMPLIFIER

#4
20250088156
2025-03-13

INSTRUMENTATION AMPLIFIER CAPABLE OF COMPENSATING OFFSET VOLTAGE

#5
20250070729
2025-02-27

TRANSMITTER, WIRELESS COMMUNICATION MODULE AND POWER AMPLIFICATION SYSTEM

#6
20250039600
2025-01-30

SINGLE-END-TO-DIFFERENTIAL MICROPHONE CIRCUIT AND ELECTRONIC EQUIPMENT

#7
20240322794
2024-09-26

CURRENT-MODE FILTER

#8
20240250628
2024-07-25

AMPLIFIER CIRCUIT, MOTOR DRIVER CIRCUIT, POSITIONING DEVICE, AND HARD DISK DEVICE

#9
20240151825
2024-05-09

DEVICE FOR CONVERTING A PHOTONIC SIGNAL, ASSOCIATED LIDAR AND METHOD

#10
20240030900
2024-01-25

Driver system for reducing common mode noise due to mismatches in differential signal path

#11
20230238926
2023-07-27

AUDIO CIRCUIT

#12
20230238921
2023-07-27

Differential driver

#13
20230172514
2023-06-08

Sense Amplifer For a Physiological Sensor and/or Other Sensors

#14
20230050926
2023-02-16

Radio frequency apparatus and inductance device thereof

#15
20220278660
2022-09-01

Amplifier circuitry and current sensor having the same

#16
20220271722
2022-08-25

Amplifier circuitry

#17
20220271721
2022-08-25

Amplifier circuitry

#18
20220247372
2022-08-04

Current sensing circuitry

#19
20220209731
2022-06-30

Differential signaling transmission systems

#20
20220011352
2022-01-13

Differential RF power detector with common mode rejection

#21
20210367572
2021-11-25

Amplifiers with wide input range and low input capacitance

#22
20210328554
2021-10-21

High-linearity differential to single ended buffer amplifier

#23
20210104987
2021-04-08

Amplifier circuitry

#24
20200220501
2020-07-09

Amplifier circuit with low malfunction rate

#25
20200177143
2020-06-04

Differential amplifier circuit having stable gain

#26
20200076381
2020-03-05

Switched capacitor circuit to make amount of change in reference voltage even regardless of input level

#27
20190372531
2019-12-05

Amplifier with local feedback loop

#28
20190361475
2019-11-28

Attenuating common mode noise current in current mirror circuits

#29
20190222185
2019-07-18

Common mode sensing architecture

#30
20190173436
2019-06-06

Switched capacitor circuit to make amount of change in reference voltage even regardless of input level

#31
20190097593
2019-03-28

Offset cancellation scheme

#32
20190068145
2019-02-28

Signal amplifier, signal receiving circuit including the same, and device including the same

#33
20190007037
2019-01-03

Comparator

#34
20180309415
2018-10-25

Amplifier circuit having poly resistor with biased depletion region

#35
20180284832
2018-10-04

Attenuating common mode noise current in current mirror circuits

#36
20180234082
2018-08-16

Systematic coupling balance scheme to enhance amplitude and phase matching for long-traveling multi-phase signals

#37
20180191321
2018-07-05

Temperature-compensated equalizer

#38
20180109232
2018-04-19

Amplifier device

#39
20180069514
2018-03-08

Low voltage high speed CMOS line driver without tail current source

#40
20180069513
2018-03-08

Common-mode feedback for differential amplifier

#41
20180019718
2018-01-18

Differential signal conditioner with common mode voltage error compensation

#42
20170366147
2017-12-21

Differential circuits with constant Gbias

#43
20170126189
2017-05-04

Gain enhancement using advanced correlated level shifting

#44
20170077882
2017-03-16

Class-D amplifier with pulse-width modulation common-mode control and associated method for performing class-D amplification

#45
20160380644
2016-12-29

Telescopic amplifier with improved common mode settling

#46
20160352288
2016-12-01

Multistage amplifier

#47
20160336905
2016-11-17

Thermal compensation for amplifiers

#48
20160173045
2016-06-16

Current sense amplifer with extended common mode input voltage range

#49
20160072646
2016-03-10

APPARATUS COMPRISING A DIFFERENTIAL AMPLIFIER CIRCUIT AND AN EXTRACTION CIRCUIT

#50
20150349733
2015-12-03

Transmitter digital-to-analog converter (DAC)-baseband filter (BBF) common mode interface

#51
20150303880
2015-10-22

Low pass filter with common-mode noise reduction

#52
20150236662
2015-08-20

Apparatus and methods for improving common mode rejection ratio

#53
20150222237
2015-08-06

Amplifier with reduced idle power loss using single-ended loops

#54
20150200635
2015-07-16

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

#55
20150145596
2015-05-28

Adaptive biasing scheme for an amplifier

#56
20140340789
2014-11-20

Operational amplifier, motor drive device, magnetic disk storage device, and electronic appliance

#57
20140325322
2014-10-30

Semiconductor integrated circuit and drive apparatus including the same

#58
20130321085
2013-12-05

Adaptive biasing scheme for an amplifier

#59
20130055052
2013-02-28

Semiconductor integrated circuit and drive apparatus including the same

#60
20130033333
2013-02-07

Self calibrated, broadband, tunable, active oscillator with unity gain cells for multi-standard and/or multiband channel selection

#61
20120188006
2012-07-26

Self-calibrated, broadband, tunable, active filter with unity gain cells for multi-standard and/or multiband channel selection

#62
20110193623
2011-08-11

Large time constant steering circuit and instrumentation amplifier implementing same

#63
20090267695
2009-10-29

Class AB output stage with programmable bias point control

#64
20090195319
2009-08-06

Large time constant steering circuit and instrumentation amplifier implementing same

#65
20090058525
2009-03-05

Common-mode bandwidth reduction circuit and method for differential applications

#66
20080009255
2008-01-10

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

#67
20070257733
2007-11-08

AMPLIFIER SYSTEM WITH CURRENT-MODE SERVO FEEDBACK

#68
20070120595
2007-05-31

Increasing the common mode range of a circuit

#69
20060170494
2006-08-03

Cross-talk reduction circuit and method therefor

#70
20060103426
2006-05-18

Compensation circuits for unequal input/output common mode voltages

#71
20050281103
2005-12-22

Semiconductor integrated circuit and operational amplifier

#72
20050116773
2005-06-02

Amplifier system with current-mode servo feedback

#73
15993063
2019-08-27

Amplifier with common mode loop and chop

#74
15201287
2017-12-19

Low voltage high speed CMOS line driver without tail current source