ClassID:

220032

H03F2203/45454 - 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 biasing means controlled by the input signal

Recent Application in this class:
#1
20230188097
2023-06-15

DIFFERENTIAL SIGNAL AMPLIFICATION CIRCUIT, DIGITAL ISOLATOR, AND DIGITAL RECEIVER

#2
20220165299
2022-05-26

Data storage device employing amplifier feedback for impedance matching

#3
20180212573
2018-07-26

Bias modulation active linearization for broadband amplifiers

#4
20180083585
2018-03-22

Linear variable gain amplifier

#5
20180054169
2018-02-22

Amplifier biasing circuits and method

#6
20160344355
2016-11-24

Amplifier circuit and method for adaptive amplifier biasing

#7
20160126898
2016-05-05

Apparatus and methods for reducing input bias current of an electronic circuit

#8
20160087727
2016-03-24

Optical modulator driver circuit and optical transmitter

#9
20150349717
2015-12-03

Amplifier circuit with improved accuracy

#10
20150077579
2015-03-19

Angular velocity sensor, and electronic apparatus using same

#11
20150015334
2015-01-15

Analog circuits having improved transistors, and methods therefor

#12
20140354360
2014-12-04

High frequency module and portable terminal using same

#13
20130194039
2013-08-01

Differential amplifier circuit with ultralow power consumption provided with adaptive bias current generator circuit

#14
20130187629
2013-07-25

Dynamic biasing of an amplifier using capacitive driving of internal bias voltages

#15
20130114665
2013-05-09

Low nonlinear distortion variable gain amplifier

#16
20130099863
2013-04-25

Fourth-order electrical current source apparatus, systems and methods

#17
20130043877
2013-02-21

Operational amplifier with different power supply voltages

#18
20120242409
2012-09-27

Analog circuits having improved transistors, and methods therefor

#19
20110074616
2011-03-31

Amplifier

#20
20110001562
2011-01-06

High speed linear differential amplifier

#21
20090289715
2009-11-26

Amplifier with improved linearization

#22
20090195313
2009-08-06

Boosted tail-current circuit

#23
20090131099
2009-05-21

Amplifying device and radio

#24
20090072908
2009-03-19

Gain control circuit and optical recording and reproducing device using thereof

#25
20090033422
2009-02-05

Multi-level slew and swing control buffer

#26
20080218254
2008-09-11

Reduced jitter amplification methods and apparatuses

#27
20080106335
2008-05-08

Differential circuit

#28
20080074195
2008-03-27

Adaptive tuning circuit to maximize output signal amplitude for an amplifier

#29
20080001662
2008-01-03

Operational amplifier of class AB

#30
20070279131
2007-12-06

Variable gain amplifier and differential amplifier

#31
20070247226
2007-10-25

Circuit for correcting signal distortions

#32
20070222517
2007-09-27

Amplifier

#33
20070194851
2007-08-23

Apparatus and method for affecting operation of a signal treating device

#34
20070152752
2007-07-05

Bias circuit

#35
20070146075
2007-06-28

Analog multistage amplification circuit in the field of sensor

#36
20070057724
2007-03-15

Operational amplifier

#37
20060238249
2006-10-26

Control circuit for operational amplifier and method thereof

#38
20060132239
2006-06-22

Input tracking current mirror for a differential amplifier system

#39
20060055459
2006-03-16

Method and apparatus for a linear transconductance device

#40
20060012429
2006-01-19

Self biased differential amplifier

#41
20050168284
2005-08-04

Operational amplifier with self control circuit for realizing high slew rate throughout full operating range

#42
20050128000
2005-06-16

Ultra fast, low noise operational amplifier with dynamic biasing

#43
20050017761
2005-01-27

Multi-input differential circuit