ClassID:

220122

H03F2203/45634 - 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 the LC comprising one or more switched capacitors

Recent Application in this class:
#1
20250183859
2025-06-05

TRANS-IMPEDANCE AMPLIFIER FOR ULTRASOUND DEVICE AND RELATED APPARATUS AND METHODS

#2
20240120891
2024-04-11

Trans-impedance amplifier for ultrasound device and related apparatus and methods

#3
20210384872
2021-12-09

Trans-impedance amplifier for ultrasound device and related apparatus and methods

#4
20210159866
2021-05-27

Switched capacitor amplifier circuit, voltage amplification method, and infrared sensor device

#5
20200067469
2020-02-27

High dynamic range capacitor transimpedance amplifier

#6
20190140603
2019-05-09

Trans-impedance amplifier for ultrasound device and related apparatus and methods

#7
20190020330
2019-01-17

Variable capacitance circuit, oscillator circuit, and method of controlling variable capacitance circuit

#8
20180331667
2018-11-15

Switched capacitor amplifier circuit, voltage amplification method, and infrared sensor device

#9
20180183394
2018-06-28

Dynamic amplifier and chip using the same

#10
20170163225
2017-06-08

Trans-impedance amplifier for ultrasound device and related apparatus and methods

#11
20170054416
2017-02-23

Class-D audio amplifier

#12
20170047937
2017-02-16

Method of forming an amplifier and structure therefor

#13
20160380644
2016-12-29

Telescopic amplifier with improved common mode settling

#14
20160336930
2016-11-17

Amplifying circuit, AD converter, integrated circuit, and wireless communication apparatus

#15
20160266178
2016-09-15

VDS equalizer offset compensation for a current sense circuit

#16
20160248462
2016-08-25

Frequency tuning of narrowband low noise amplifiers

#17
20160156315
2016-06-02

Parallel resonant circuit

#18
20160015358
2016-01-21

Radiation imaging apparatus and radiation imaging system

#19
20150357980
2015-12-10

Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier

#20
20150255173
2015-09-10

Switched capacitor circuit and drive method thereof

#21
20150077579
2015-03-19

Angular velocity sensor, and electronic apparatus using same

#22
20140354360
2014-12-04

High frequency module and portable terminal using same

#23
20140028286
2014-01-30

Amplifier circuits and methods

#24
20130241653
2013-09-19

Instrumentation input systems

#25
20130207722
2013-08-15

Peaking amplifier with capacitively-coupled parallel input stages

#26
20130043950
2013-02-21

Common mode input control for switch capacitor amplifier in pipeline analog-to-digital converter

#27
20130015916
2013-01-17

Common-mode step response for autozero amplifiers

#28
20120286874
2012-11-15

Positive feedback common gate low noise amplifier

#29
20120086513
2012-04-12

Instrumentation input systems

#30
20120009889
2012-01-12

Narrow-band tunable radio frequency (RF) power amplifiers and related methods

#31
20110249770
2011-10-13

Passive transmitter architecture with switchable outputs for wireless applications

#32
20110204978
2011-08-25

Comparator circuit

#33
20110095812
2011-04-28

Transmission line coupled to circuits and Q-enhancement cell

#34
20110018633
2011-01-27

Operational amplifier having DC offset cancellation capability

#35
20100308915
2010-12-09

Phase margin modification in operational transconductance amplifiers

#36
20100007419
2010-01-14

Instrumentation input systems

#37
20090201051
2009-08-13

Sample-and-Hold Circuit and Pipeline Ad Converter Using Same

#38
20090115523
2009-05-07

Discrete time amplifier circuit and analong-digital converter

#39
20080074195
2008-03-27

Adaptive tuning circuit to maximize output signal amplitude for an amplifier

#40
20080032661
2008-02-07

Circuit with Q-enhancement cell having programmable bias current slope

#41
20070228258
2007-10-04

Amplifier circuit and optical pickup device

#42
20070217544
2007-09-20

Power management in a data acquisition system

#43
20060255855
2006-11-16

Offset adjusting circuit and operational amplifier circuit

#44
20050114428
2005-05-26

Analog delay elements