ClassID:

219816

H03F2203/45022 - 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 or more added resistors to the amplifying transistors in the differential amplifier

Recent Application in this class:
#1
20260098879
2026-04-09

CURRENT SENSE AMPLIFIER

#2
20260065993
2026-03-05

INPUT BUFFER IN MEMORY DEVICES AND MEMORY SYSTEMS

#3
20260038581
2026-02-05

RECEIVER CIRCUIT FOR DOUBLE DATA RATE MEMORY, AND THE DOUBLE DATA RATE MEMORY USING THE RECEIVER CIRCUIT

#4
20250246225
2025-07-31

CLOCK AMPLIFIER CIRCUIT AND MEMORY DEVICE INCLUDING THE SAME

#5
20250183863
2025-06-05

TRANSCONDUCTANCE AMPLIFIER CIRCUIT AND DC-DC CONVERTER USING THE TRANSCONDUCTANCE AMPLIFIER CIRCUIT

#6
20240162873
2024-05-16

Open-Collector Variable Gain Amplifier and Method Therefor

#7
20230170863
2023-06-01

Fully-differential preamplifier

#8
20220094314
2022-03-24

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

#9
20210288843
2021-09-16

LINEAR EQUALIZATION, AND ASSOCIATED METHODS, DEVICES, AND SYSTEMS

#10
20210126604
2021-04-29

Differential amplifier circuit having variable gain

#11
20210104986
2021-04-08

Fully differential amplifier including feedforward path

#12
20210067112
2021-03-04

Logarithmic amplifier circuit

#13
20200287506
2020-09-10

Highly linear transconductance amplifier and method thereof

#14
20200266779
2020-08-20

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

#15
20200241331
2020-07-30

DRIVING CIRCUIT FOR OPTICAL MODULATOR

#16
20200163562
2020-05-28

LOW NOISE FRONT-END FOR A HEART RATE MONITOR USING PHOTO-PLETHYSMOGRAPHY

#17
20200106412
2020-04-02

Voltage sampler driver with enhanced high-frequency gain

#18
20200091883
2020-03-19

Ethernet line driver

#19
20200083854
2020-03-12

Programmable continuous time linear equalizer having stabilized high-frequency peaking for controlling operating current of a slicer

#20
20200083847
2020-03-12

SYSTEM AND METHOD FOR BIASING AN AMPLIFIER

#21
20200059200
2020-02-20

Amplifier offset cancellation using amplifier supply voltage

#22
20190363678
2019-11-28

Amplifier circuitry, voltage regulator circuit, and signal compensation method

#23
20190342128
2019-11-07

Continuous time linear equalizer

#24
20190325843
2019-10-24

Receiving circuit with offset voltage compensation

#25
20190229684
2019-07-25

System and method for reducing output harmonics

#26
20190229604
2019-07-25

Waveform shaping circuit, semiconductor device, and switching power supply device

#27
20190204863
2019-07-04

Reference voltage generator

#28
20190199290
2019-06-27

Differential amplifier with complementary unit structure

#29
20190158054
2019-05-23

Signal acquisition device for high-voltage loop, detector, battery device, and vehicle

#30
20190150777
2019-05-23

DUAL-SUPPLY ANALOG CIRCUITRY FOR SENSING SURFACE EMG SIGNALS

#31
20190103892
2019-04-04

Channel select filter having a fully differential transresistance amplifier and CMOS current amplifier

#32
20190097845
2019-03-28

Continuous time linear equalizer

#33
20190097583
2019-03-28

Amplifier configuration for load-line enhancement

#34
20190089365
2019-03-21

Amplifier circuitry, ad converter, and wireless communication device

#35
20190068149
2019-02-28

Programmable gain amplifier

#36
20190036497
2019-01-31

Reconfigurable amplifier and amplification method thereof

#37
20180358942
2018-12-13

Differential amplifier with modified common mode rejection, and to a circuit with an improved common mode rejection ratio

#38
20180316325
2018-11-01

Amplifier circuit that amplifies differential signal and optical module that includes amplifier circuit

#39
20180316323
2018-11-01

Amplifier

#40
20180316313
2018-11-01

Amplifier offset cancellation using amplifier supply voltage

#41
20180302053
2018-10-18

Voltage sampler driver with enhanced high-frequency gain

#42
20180278217
2018-09-27

Amplifier, audio signal output method, and electronic device

#43
20180083585
2018-03-22

Linear variable gain amplifier

#44
20180069520
2018-03-08

Variable gain amplifier and method of operating the same

#45
20180041171
2018-02-08

Selectable current limiter circuit

#46
20170366147
2017-12-21

Differential circuits with constant Gbias

#47
20170214374
2017-07-27

Voltage sampler driver with enhanced high-frequency gain

#48
20170126185
2017-05-04

Dual operation mode power amplifier

#49
20170040965
2017-02-09

Symmetric linear equalization circuit with increased gain

#50
20160380644
2016-12-29

Telescopic amplifier with improved common mode settling

#51
20160329869
2016-11-10

Amplifier with compensation of gain in low frequencies

#52
20160099689
2016-04-07

Transmission line driver circuit for adaptively calibrating impedance matching

#53
20160011242
2016-01-14

Capacitive current sensing using a current feedback amplifier

#54
20150310822
2015-10-29

Differential amplifier circuit and display drive circuit

#55
20150214910
2015-07-30

Operational transconductance amplifier with increased current sinking capability

#56
20150180420
2015-06-25

Amplifier, fully-differential amplifier and delta-sigma modulator

#57
20150130537
2015-05-14

Power amplification module

#58
20090284316
2009-11-19

Amplifier device

#59
20080024224
2008-01-31

Low noise amplifier with low current consumption

#60
16730132
2020-12-01

Circuit for generating differential reference voltages, circuit for detecting signal peak, and electronic device

#61
16581784
2020-09-01

Silicon carbide integrated circuit including P-N junction photodiode

#62
16215603
2020-01-28

High-speed low VT drift receiver

#63
16143123
2020-07-07

High-speed low VT drift receiver

#64
15921682
2019-05-28

High-speed internal hysteresis comparator

#65
15905190
2018-11-27

Low-power channel select filter using transresistance amplifier for DVB-H receivers

#66
15821616
2019-04-23

Low-power differential amplifier with improved unity gain frequency

#67
15805099
2019-10-15

Silicon carbide integrated circuit active photodetector

#68
15442801
2018-07-10

Broadband differential trans-impedance amplifier (TIA)

#69
15272828
2017-10-31

Linear variable gain amplifier

#70
15223310
2017-08-08

Flexible signal chain processing circuits and method

#71
15160912
2017-08-01

Differential circuits with constant Gbias