ClassID:

219370

H03F3/45219 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements; Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit; Complementary long tailed pairs having parallel inputs and being supplied in parallel Folded cascode stages

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
20240291453
2024-08-29

HIGH GAIN, LOW-OFFSET, CLASS AB AMPLIFIER CIRCUIT

#3
20220094317
2022-03-24

Amplifiers for RF ADCS

#4
20210194446
2021-06-24

Operational transconductance amplifier and a method for converting a differential input voltage to a differential output current

#5
20200412310
2020-12-31

Semiconductor device and memory system

#6
20200350871
2020-11-05

Reducing supply to ground current

#7
20200287509
2020-09-10

OPERATIONAL AMPLIFIER

#8
20200266783
2020-08-20

Semiconductor device and memory system

#9
20200244275
2020-07-30

Initialization method for precision phase adder

#10
20190260334
2019-08-22

Operational amplifier circuit capable of improving linearity relation between loading current and input voltage difference

#11
20190245524
2019-08-08

Buffer amplifier

#12
20190207562
2019-07-04

Reducing supply to ground current

#13
20190132428
2019-05-02

Multi-protocol receiver

#14
20190115884
2019-04-18

High performance folded cascode current source with dual mirrors current feedback

#15
20190088183
2019-03-21

Operational amplifier circuit, data driving circuit, and operation methods of the same

#16
20190012980
2019-01-10

Output amplifier and display driver

#17
20180337642
2018-11-22

Operational amplifier circuit capable of improving linearity relation between loading current and input voltage difference

#18
20180212572
2018-07-26

Class AB amplifier having cascode stage with filter for improving linearity

#19
20180183395
2018-06-28

Active inductor and amplifier circuit

#20
20180138883
2018-05-17

Wide bandwidth variable gain amplifier and exponential function generator

#21
20180061307
2018-03-01

Receiver for receiving differential signal, IC including receiver, and display device

#22
20170250663
2017-08-31

Differential amplifier, receiver, and circuit

#23
20170230005
2017-08-10

Ultra-low working voltage rail-to-rail operational amplifier, and differential input amplification-stage circuit and output-stage circuit thereof

#24
20170140725
2017-05-18

Overdrive amplifier and semiconductor device

#25
20170040949
2017-02-09

Operational amplifier circuit and bias current supply method

#26
20170032760
2017-02-02

Operational amplifying circuit and liquid crystal panel drive device using the same

#27
20170032755
2017-02-02

Buffer amplifier circuit for enhancing the slew rate of an output signal and devices including the same

#28
20170032740
2017-02-02

Source driver including output buffer, display driving circuit, and operating method of source driver

#29
20160373062
2016-12-22

Class AB amplifier

#30
20160072446
2016-03-10

Operational amplifying circuit and semiconductor device comprising the same

#31
20150356941
2015-12-10

Operational amplifying circuit and liquid crystal panel drive device using the same

#32
20140300416
2014-10-09

Operational amplifier circuit

#33
20140300414
2014-10-09

Operational amplifier circuit

#34
20140159814
2014-06-12

Differential receiver

#35
20140111278
2014-04-24

Dynamically biased output structure

#36
20130249639
2013-09-26

Folded cascode amplifier with an enhanced slew rate

#37
20130249635
2013-09-26

Amplifier for output buffer and signal processing apparatus using the same

#38
20130181776
2013-07-18

Rail-to-rail comparator

#39
20120146729
2012-06-14

Amplifier device

#40
20120133688
2012-05-31

Operational amplifying circuit and liquid crystal panel drive device using the same

#41
20120133438
2012-05-31

Differential amplifier and data driver

#42
20120075022
2012-03-29

Differential amplifier

#43
20120044021
2012-02-23

Differential amplifier circuit

#44
20110260758
2011-10-27

Half-power buffer amplifier

#45
20110128047
2011-06-02

Half-power buffer amplifier

#46
20110025655
2011-02-03

OPERATIONAL AMPLIFIER AND SEMICONDUCTOR DEVICE USING THE SAME

#47
20110025654
2011-02-03

Differential amplifier circuit, data line driver using the same, and liquid crystal display apparatus

#48
20110007058
2011-01-13

DIFFERENTIAL CLASS AB AMPLIFIER CIRCUIT, DRIVER CIRCUIT AND DISPLAY DEVICE

#49
20100301939
2010-12-02

High frequency receiver preamplifier with CMOS rail-to-rail capability

#50
20100134186
2010-06-03

Low power operational amplifier

#51
20100097142
2010-04-22

Driving circuit system and method of elevating slew rate of operational amplifier

#52
20100039179
2010-02-18

Folded cascode operational amplifier having improved phase margin

#53
20100033464
2010-02-11

Class AB amplifier circuit and display apparatus

#54
20100033463
2010-02-11

Operational amplifier circuit and display panel driving apparatus

#55
20100007417
2010-01-14

Differential amplifier with symmetric circuit topology

#56
20090309857
2009-12-17

Operational amplifter circuit, and driving method of liquid crystal display using the same

#57
20090302895
2009-12-10

Constant output common mode voltage of a pre-amplifier circuit

#58
20090289930
2009-11-26

Operational amplifier circuit and display panel driving apparatus

#59
20090174479
2009-07-09

High-voltage differential amplifier and method using low voltage amplifier and dynamic voltage selection

#60
20090066416
2009-03-12

Push-pull amplifier

#61
20090066415
2009-03-12

Operational amplifier having high slew rate and stability, and operating method thereof

#62
20090039959
2009-02-12

Differential amplifier, method for amplifying signals of differential amplifier, and display driving device having differential amplifier

#63
20080309410
2008-12-18

Offset fixing operational amplifier circuit

#64
20080278232
2008-11-13

Operational amplifier with rail-to-rail common-mode input and output range

#65
20080265993
2008-10-30

Class AB rail-to-rail input and output operational amplifier

#66
20080265990
2008-10-30

Semiconductor circuit

#67
20080252375
2008-10-16

Voltage-clamping device and operational amplifier and design method thereof

#68
20080224777
2008-09-18

Rail-to-rail amplifier circuit and semiconductor device

#69
20080111626
2008-05-15

Rail-to-rail class-AB operational amplifier

#70
20080079491
2008-04-03

Differential amplifier circuit

#71
20080074405
2008-03-27

Operational amplifier and method of driving liquid crystal display

#72
20080036538
2008-02-14

RAIL-TO-RAIL CLASS AB AMPLIFIER

#73
20070285164
2007-12-13

Operational amplifier

#74
20070279132
2007-12-06

Apparatus for biasing a complementary metal-oxide semiconductor differential amplifier

#75
20070273442
2007-11-29

High-efficiency class-AB amplifier

#76
20070242146
2007-10-18

Apparatus and methods providing dynamic biasing of cascode transistors in class AB amplifiers

#77
20070194377
2007-08-23

Thin film semiconductor device and manufacturing method

#78
20070080723
2007-04-12

Output buffer circuit

#79
20060279509
2006-12-14

Operational amplifier with constant offset and apparatus comprising such as operational amplifier

#80
20060279356
2006-12-14

Source driver controlling slew rate

#81
20060255856
2006-11-16

Operational amplifier with less offset voltage

#82
20060244532
2006-11-02

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

#83
20060119429
2006-06-08

High frequency receiver preamplifier with CMOS rail-to-rail capability

#84
20050275459
2005-12-15

Voltage comparator circuit

#85
20050184804
2005-08-25

Differential amplifier and semiconductor device

#86
20050077961
2005-04-14

Class AB rail-to-rail operational amplifier

#87
15299527
2018-02-13

Offset calibration circuit and method for an amplifier circuit