ClassID:

220057

H03F2203/45504 - 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 CSC comprising more than one switch

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
20190229683
2019-07-25

Methods of adjusting gain error in instrumentation amplifiers

#5
20190140603
2019-05-09

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

#6
20180323762
2018-11-08

Dynamic correction of gain error in current-feedback instrumentation amplifiers

#7
20180323748
2018-11-08

Methods of adjusting gain error in instrumentation amplifiers

#8
20180212576
2018-07-26

Transconductance amplifier and phase shifter

#9
20170324387
2017-11-09

Input feed-forward technique for class AB amplifier

#10
20170163225
2017-06-08

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

#11
20160294383
2016-10-06

Programmable high-speed equalizer and related method

#12
20160087727
2016-03-24

Optical modulator driver circuit and optical transmitter

#13
20150280666
2015-10-01

Differential amplification circuit and semiconductor integrated circuit

#14
20150122034
2015-05-07

Detection device, sensor, electronic apparatus, and moving object

#15
20130049869
2013-02-28

Temperature compensated feedforward linearizer

#16
20130049866
2013-02-28

Amplifier circuit with noise suppression and related noise suppression method thereof

#17
20120188031
2012-07-26

Programmable high-frequency high-gain equalizer for digital display interfaces

#18
20120146727
2012-06-14

Fast power up comparator

#19
20120139631
2012-06-07

Wide-swing telescopic operational amplifier

#20
20110169574
2011-07-14

Equalization system with stabilized peaking gain for a communication system

#21
20110156759
2011-06-30

SAMPLE AND HOLD CIRCUIT AND METHOD FOR CONTROLLING THE SAME

#22
20110150038
2011-06-23

SYSTEM AND METHOD FOR UWB TRANSMISSION PREDISTORTION AND RF WIRE-BOND INTERFACE TECHNIQUE RELATED APPLICATION

#23
20110096186
2011-04-28

Fully-differential amplifier, photoelectric conversion apparatus including fully-differential amplifier, and image-pickup system

#24
20110084763
2011-04-14

Db-linear process-independent variable gain amplifier

#25
20110063031
2011-03-17

Driving apparatus and driving method thereof

#26
20100315164
2010-12-16

Constant-bandwidth variable gain amplifier

#27
20100201551
2010-08-12

Automatic common-mode rejection calibration

#28
20100148878
2010-06-17

Amplifier with dither

#29
20100052966
2010-03-04

Differential amplifier and data driver employing the differential amplifier

#30
20100045383
2010-02-25

Variable gain circuit

#31
20100013557
2010-01-21

Current-controlled CMOS (C3MOS) fully differential integrated wideband amplifier/equalizer with adjustable gain and frequency response without additional power or loading

#32
20090310267
2009-12-17

Methods, design structures, and systems for current mode logic (CML) differential driver ESD protection circuitry

#33
20090295486
2009-12-03

Operational amplifier having adjustable bias current and related source driver of display thereof

#34
20090278604
2009-11-12

Operational amplifier and related method of enhancing slew rate

#35
20090224805
2009-09-10

Electronic circuit with compensation of intrinsic offset of differential pairs

#36
20090131099
2009-05-21

Amplifying device and radio

#37
20080238521
2008-10-02

Low differential output voltage circuit

#38
20080165168
2008-07-10

Differential amplifier and data driver employing the differential amplifier

#39
20080157825
2008-07-03

Driving apparatus and driving method thereof

#40
20080074188
2008-03-27

Output differential stage

#41
20080024220
2008-01-31

Gain-controlled amplifier

#42
20070268060
2007-11-22

Method and circuit arrangement for generating a periodic electric signal with controllable phase

#43
20070217544
2007-09-20

Power management in a data acquisition system

#44
20070025435
2007-02-01

Current-controlled CMOS (C3MOS) fully differential integrated wideband amplifier/equalizer with adjustable gain and frequency response without additional power or loading

#45
20060293004
2006-12-28

Semiconductor integrated circuit device and wireless communication system

#46
20060284671
2006-12-21

Variable gain amplifier circuit, method of correcting DC offset of the variable gain amplifying circuit, and radio receiving apparatus

#47
20060258319
2006-11-16

Integrated wide bandwidth attenuating-and-amplifying circuit

#48
20060244532
2006-11-02

Circuit and method for switching active loads of operational amplifier input stage

#49
20060238249
2006-10-26

Control circuit for operational amplifier and method thereof

#50
20060132193
2006-06-22

Differential amplifier and data driver employing the differential amplifier

#51
20060022748
2006-02-02

Variable gain amplifier circuit and radio machine

#52
20050248396
2005-11-10

VGA-CTF combination cell for 10 Gb/s serial data receivers

#53
20050225390
2005-10-13

Amplifier having switchable negative feedback

#54
20050195033
2005-09-08

Differential amplifier circuit used in solid-state image pickup apparatus, and arrangement that avoids influence of variations of integrated circuits in manufacture and the like

#55
20050162194
2005-07-28

Transconductance varying circuit of transconductor circuit, varying bandwidth filter circuit using the same and digital tuning circuit of transconductor-capacitor filter

#56
20050110569
2005-05-26

Digitally controlled transconductance cell

#57
20050035820
2005-02-17

Switchable operational amplifier circuit