ClassID:

220075

H03F2203/45541 - 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 IC comprising dynamic biasing means, i.e. controlled by the input signal

Recent Application in this class:
#1
20250192740
2025-06-12

CURRENT EQUALIZATION CIRCUITRY FOR THE FOLDED BRANCH OF A RAIL-TO-RAIL INPUT OTA WITH AB-CLASS OUTPUT STAGE

#2
20200403587
2020-12-24

Methods and apparatus for an amplifier integrated circuit

#3
20160294336
2016-10-06

Balanced differential transimpedance amplifier with single ended input and balancing method

#4
20160100243
2016-04-07

Headset amplification circuit with error voltage suppression

#5
20150381125
2015-12-31

Power amplifier

#6
20150097619
2015-04-09

Amplifier

#7
20120154028
2012-06-21

Bias circuit and analog integrated circuit comprising the same

#8
20110169565
2011-07-14

Receiving circuit

#9
20100289565
2010-11-18

Integrated circuits and methods for enabling high-speed AC-coupled networks to suppress noise during low-frequency operation

#10
20100148871
2010-06-17

Systems and methods for an adaptive bias circuit for a differential power amplifier

#11
20090231033
2009-09-17

Amplifier circuit

#12
20090058522
2009-03-05

Differential amplifier

#13
20080272839
2008-11-06

Operation amplifier and circuit for providing dynamic current thereof

#14
20080231372
2008-09-25

Dynamic biasing amplifier apparatus, dynamic biasing apparatus and method

#15
20080024211
2008-01-31

Multi-operational amplifier system

#16
20080012642
2008-01-17

Serial link receiver with wide input voltage range and tolerance to high power voltage supply

#17
20070200622
2007-08-30

Modulator apparatus operating at low supply voltage, and corresponding method of modulation

#18
20070120599
2007-05-31

Multi-operational amplifier system

#19
20070069816
2007-03-29

Method for transconductance linearization for DC-coupled applications

#20
20060119430
2006-06-08

Adaptive bias scheme for high-voltage compliance in serial links

#21
20050248382
2005-11-10

Resistor compensation apparatus

#22
20050189992
2005-09-01

Bipolar differential input stage with input bias current cancellation circuit

#23
20050174175
2005-08-11

Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit

#24
20050162230
2005-07-28

Multi-operational amplifier system

#25
14506070
2016-03-01

High performance GaN operational amplifier with wide bandwidth and high dynamic range