H03F2203/45471 - CPC Classification Index

ClassID:

220040 ⎘

H03F2203/45471 - 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 one or more extra current sources

Recent Application in this class:

20250183859

2025-06-05

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

20240120891

2024-04-11

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

20230055228

2023-02-23

Common-source differential power amplifier and electronic device including the same

20210384872

2021-12-09

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

20190140603

2019-05-09

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

20170163225

2017-06-08

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

20160087727

2016-03-24

Optical modulator driver circuit and optical transmitter

20130207720

2013-08-15

Operational amplifier with elimination of offset voltage

20130016087

2013-01-17

Amplifier, liquid crystal displaying driving circuit and liquid crystal display apparatus

#10

20120206200

2012-08-16

Differential amplifier with de-emphasis

#11

20120146727

2012-06-14

Fast power up comparator

#12

20110156819

2011-06-30

Low-noise high efficiency bias generation circuits and method

#13

20110086594

2011-04-14

Providing a temperature dependent bias for a device

#14

20100201551

2010-08-12

Automatic common-mode rejection calibration

#15

20100066436

2010-03-18

Active-time dependent bias current generation for switched-capacitor circuits

#16

20100033250

2010-02-11

Differential amplifier

#17

20090295486

2009-12-03

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

#18

20090289930

2009-11-26

Operational amplifier circuit and display panel driving apparatus

#19

20090278604

2009-11-12

Operational amplifier and related method of enhancing slew rate

#20

20090195313

2009-08-06

Boosted tail-current circuit

#21

20090091385

2009-04-09

Differential amplifier circuit

#22

20090033422

2009-02-05

Multi-level slew and swing control buffer

#23

20090015330

2009-01-15

Variable transconductance circuit

#24

20080238549

2008-10-02

Amplifier electronic circuit comprising a differential pair and a feedback system

#25

20080136523

2008-06-12

Gain improved operational transconductance amplifier and control method thereof

#26

20080106335

2008-05-08

Differential circuit

#27

20080024220

2008-01-31

Gain-controlled amplifier

#28

20070194847

2007-08-23

Operational amplifier

#29

20070057727

2007-03-15

Differential operational amplifier

#30

20070018725

2007-01-25

Variable transconductance circuit

#31

20060279356

2006-12-14

Source driver controlling slew rate

#32

20060238249

2006-10-26

Control circuit for operational amplifier and method thereof

#33

20060170497

2006-08-03

Gain variable amplifier

#34

20060164149

2006-07-27

Mixer stage and method for mixing two signals having different frequencies

#35

20060017499

2006-01-26

Subtractor circuit and power detector arrangement having that subtractor circuit

#36

20060001486

2006-01-05

Bias circuit for high frequency amplifiers

#37

20050168284

2005-08-04

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

#38

20050134390

2005-06-23

Bias circuit for high frequency amplifiers