ClassID:

219472

H03F3/45932 - 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 using IC blocks as the active amplifying circuit by using feedback means

Sub-classes:
Recent Application in this class:
#1
20260051866
2026-02-19

COMMON MODE CONTROL FOR LOW DUTY CYCLE

#2
20250274091
2025-08-28

Circuit Architectures Addressing Erroneous Common-Mode Voltage

#3
20240154580
2024-05-09

SEMICONDUCTOR DEVICE AND TEST METHOD

#4
20240146269
2024-05-02

DIFFERENTIAL ALL-PASS COUPLING CIRCUIT WITH COMMON MODE FEEDBACK

#5
20230318552
2023-10-05

FOUR-PHASE GENERATION CIRCUIT WITH FEEDBACK

#6
20210058047
2021-02-25

Isolation amplification circuit with improved common mode rejection

#7
20210044267
2021-02-11

Programmable gain amplifier with programmable resistance

#8
20200091884
2020-03-19

Amplifier with common mode detection

#9
20190020321
2019-01-17

Non-inverting differential amplifier with configurable common-mode output signal and reduced common-mode gain

#10
20190012503
2019-01-10

Fingerprint sensing circuit and fingerprint sensing apparatus

#11
20170373655
2017-12-28

High frequency common mode rejection technique for large dynamic common mode signals

#12
20170230020
2017-08-10

Class D switching amplifier and method of controlling a loudspeaker

#13
20170019078
2017-01-19

Differential class-D amplifier

#14
20150249434
2015-09-03

Amplifier circuit and amplifier circuit IC chip

#15
20150084688
2015-03-26

Baseband processing circuitry

#16
20150002221
2015-01-01

Instrumentation amplifier and signal amplification method

#17
20130300503
2013-11-14

Programmable-gain amplifier

#18
20120274398
2012-11-01

RF AGC control

#19
20120206197
2012-08-16

Differential amplifying apparatus

#20
20120154048
2012-06-21

Amplifier common-mode control methods

#21
20100066577
2010-03-18

Delta-sigma analog-to-digital converter

#22
20080112712
2008-05-15

Bandpass filter circuit, band-elimination filter circuit, infrared signal processing circuit

#23
20070257734
2007-11-08

Balanced output circuit and electronic apparatus utilizing the same

#24
15599771
2018-10-23

Preventing distortion in a differential power amplifier