ClassID:

219759

H03F2203/30021 - 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 single-ended push-pull [SEPP]; Phase-splitters therefor A capacitor being coupled in a feedback circuit of a SEPP amplifier

Recent Application in this class:
#1
20160072446
2016-03-10

Operational amplifying circuit and semiconductor device comprising the same

#2
20150270811
2015-09-24

Operational amplifier and driving circuit

#3
20150091654
2015-04-02

High voltage wide bandwidth amplifier

#4
20140184340
2014-07-03

Integrated circuit for use in a hybrid output stage

#5
20140132349
2014-05-15

Self-biasing radio frequency circuitry

#6
20140103999
2014-04-17

Amplifier, fully-differential amplifier and delta-sigma modulator

#7
20130194039
2013-08-01

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

#8
20120188016
2012-07-26

Circuitry for biasing amplifiers

#9
20120182072
2012-07-19

Self-biasing radio frequency circuitry

#10
20120044021
2012-02-23

Differential amplifier circuit

#11
20120013400
2012-01-19

Current control circuit, class AB operational amplifier system and current control method

#12
20120007677
2012-01-12

Class AB operational amplifier and output stage quiescent current control method

#13
20100134462
2010-06-03

Voltage amplifier and driving device of display device using the voltage amplifier

#14
20100134186
2010-06-03

Low power operational amplifier

#15
20100128898
2010-05-27

METHOD AND APPARATUS FOR OPERATION SEQUENCING OF AUDIO AMPLIFIERS

#16
20090289930
2009-11-26

Operational amplifier circuit and display panel driving apparatus

#17
20070164974
2007-07-19

Output buffer with improved output deviation and source driver for flat panel display having the output buffer

#18
20070159254
2007-07-12

Power amplifier circuit and test apparatus

#19
20060176115
2006-08-10

Operational amplifier circuit

#20
20060132233
2006-06-22

Integrated circuit devices having a control circuit for biasing an amplifier output stage and methods of operating the same

#21
20060103464
2006-05-18

Differential amplifier circuit capable of reducing current consumption

#22
20050035822
2005-02-17

CMOS class AB operational amplifier