ClassID:

219855

H03F2203/45101 - 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 Control of the DC level being present

Recent Application in this class:
#1
20230170852
2023-06-01

BROADBAND ON-CHIP NESTED-LOOP ALTERNATING CURRENT (AC)-COUPLING SYSTEMS AND METHODS

#2
20210320633
2021-10-14

Differential current source

#3
20200174508
2020-06-04

Voltage regulator and power supply

#4
20190243402
2019-08-08

Voltage regulator and power supply

#5
20190103839
2019-04-04

Radio frequency (RF) receiver circuit

#6
20180359442
2018-12-13

Signal transfer circuit and image sensor including the same

#7
20180342987
2018-11-29

Integrated circuit device

#8
20180198421
2018-07-12

Circuit with voltage drop element

#9
20180062588
2018-03-01

FBDDA amplifier and device including the FBDDA amplifier

#10
20170353165
2017-12-07

Differential amplifiers

#11
20170346456
2017-11-30

Active RC filters

#12
20170194917
2017-07-06

Semiconductor device

#13
20170141732
2017-05-18

Current sense amplifier with enhanced common mode input range

#14
20170138990
2017-05-18

Current sense amplifier with common mode rejection

#15
20160314841
2016-10-27

High performance digital to analog converter

#16
20160294382
2016-10-06

Pass device with boost voltage regulation and current gain for VCSEL driving applications

#17
20160156319
2016-06-02

FBDDA amplifier and device including the FBDDA amplifier

#18
20150263758
2015-09-17

High performance digital to analog converter

#19
20150256136
2015-09-10

Method, apparatus and system for level shifting of common mode voltage from input to output for capacitive feedback transimpedance amplifier

#20
20150222237
2015-08-06

Amplifier with reduced idle power loss using single-ended loops

#21
20150180431
2015-06-25

DC offset canceller

#22
20150130538
2015-05-14

Differential amplifier circuit

#23
20150070091
2015-03-12

Analog amplifiers and comparators

#24
20140084999
2014-03-27

Apparatus and method for wide common mode difference

#25
20140016007
2014-01-16

Readout circuit, solid-state imaging apparatus, and method for driving readout circuit

#26
20130328708
2013-12-12

Method and system for flash type analog to digital converter

#27
20130147548
2013-06-13

Linear amplifier that perform level shift and method of level shifting

#28
20130043950
2013-02-21

Common mode input control for switch capacitor amplifier in pipeline analog-to-digital converter

#29
20130033320
2013-02-07

Circuit and method for dynamically controlling op-amp offset for photodetector applications

#30
20120308052
2012-12-06

Microphone assembly

#31
20120294055
2012-11-22

Power detector

#32
20120229214
2012-09-13

Amplifier circuit and method

#33
20120218043
2012-08-30

Amplifier activation

#34
20120161873
2012-06-28

Differential pair with constant offset

#35
20120154050
2012-06-21

Circuit with reference source to control the small signal transconductance of an amplifier transistor

#36
20120105066
2012-05-03

Self-correcting amplifier system

#37
20120086448
2012-04-12

AMPLIFYING DRIVING UNIT USING GIANT MAGNETO RESISTANCE SENSOR AND DIAGNOSIS DEVICE USING THE SAME

#38
20120032944
2012-02-09

OPERATIONAL AMPLIFIER CIRCUIT, SIGNAL DRIVER, DISPLAY DEVICE, AND OFFSET VOLTAGE ADJUSTING METHOD

#39
20120032932
2012-02-09

SIGNAL DRIVER AND DISPLAY DEVICE

#40
20120001892
2012-01-05

OPERATIONAL AMPLIFIER CIRCUIT, SIGNAL DRIVER, DISPLAY DEVICE, AND OFFSET VOLTAGE ADJUSTING METHOD

#41
20120001671
2012-01-05

5V tolerant circuit for CML transceiver in AC-couple

#42
20110299577
2011-12-08

Differential driver with common mode voltage tracking and method

#43
20110140773
2011-06-16

Circuits and methods for calibrating offset in an amplifier

#44
20110115560
2011-05-19

Differential pair with constant offset

#45
20110095620
2011-04-28

Galvanic isolators and coil transducers

#46
20110084763
2011-04-14

Db-linear process-independent variable gain amplifier

#47
20110057922
2011-03-10

DRIVE DEVICE AND DISPLAY DEVICE

#48
20100315167
2010-12-16

Inter-stage matching network to enhance common mode stability

#49
20100171554
2010-07-08

Offset cancellation for DC isolated nodes

#50
20100020448
2010-01-28

Galvanic isolator

#51
20100019946
2010-01-28

Amplifier networks with controlled common-mode level and converter systems for use therewith

#52
20100019842
2010-01-28

Low-noise, wide offset range, programmable input offset amplifier front end and method

#53
20100019841
2010-01-28

Minimizing changes in common mode voltage at inputs of an operational amplifier used in a switched capacitor differential amplifier

#54
20100013556
2010-01-21

Transconductance amplifier

#55
20090302895
2009-12-10

Constant output common mode voltage of a pre-amplifier circuit

#56
20090295479
2009-12-03

Amplifier and offset regulating circuit

#57
20090278601
2009-11-12

Preamplifier and method for calibrating offsets therein

#58
20090273400
2009-11-05

Device and method for generating an output signal

#59
20090273395
2009-11-05

Preamplifier and method for calibrating offset voltages therein

#60
20090251194
2009-10-08

DC common mode level shifter

#61
20090243783
2009-10-01

Methods of making coil transducers

#62
20090243782
2009-10-01

High voltage hold-off coil transducer

#63
20090231033
2009-09-17

Amplifier circuit

#64
20090212856
2009-08-27

Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers

#65
20090212830
2009-08-27

Buffer device for switched capacitance circuit

#66
20090206806
2009-08-20

Voltage comparison circuit, and semiconductor integrated circuit and electronic device having the same

#67
20090167577
2009-07-02

Circuit and method for calibrating direct current offset

#68
20090153246
2009-06-18

Method and system for varying gain exponentially with respect to a control signal

#69
20090115507
2009-05-07

Method of and apparatus for reducing settling time of a switched capacitor amplifier

#70
20090108881
2009-04-30

Latch-based sense amplifier

#71
20090096524
2009-04-16

Differential amplification circuit and manufacturing method thereof

#72
20090058528
2009-03-05

Pre-amplifier for a receiver and a method therefor

#73
20090027124
2009-01-29

Level-Shifting Buffer

#74
20090027113
2009-01-29

Reference voltage generating circuit and offset-compensated current-voltage converting circuit using the same

#75
20090027107
2009-01-29

Semiconductor device and offset voltage adjusting method

#76
20090002075
2009-01-01

Amplifier with configurable DC-coupled or AC-coupled output

#77
20080309410
2008-12-18

Offset fixing operational amplifier circuit

#78
20080297252
2008-12-04

Differential signal generator circuit

#79
20080246544
2008-10-09

Offset adjustment device, semiconductor device, display device, offset adjustment method, noise detection device, and noise detection method

#80
20080246543
2008-10-09

Common mode feedback for large output swing and low differential error

#81
20080238521
2008-10-02

Low differential output voltage circuit

#82
20080218267
2008-09-11

Amplifier with level shifting feedback network

#83
20080218266
2008-09-11

Amplifier circuit with input terminals thereof connected to sampling capacitors

#84
20080218258
2008-09-11

Digital isolator with communication across an isolation barrier

#85
20080204106
2008-08-28

Signal adjustment techniques

#86
20080197928
2008-08-21

Threshold voltage compensation for a two stage amplifier

#87
20080180173
2008-07-31

Differential signal comparator

#88
20080179963
2008-07-31

Galvanic isolators and coil transducers

#89
20080174342
2008-07-24

Comparator with complementary differential input stages

#90
20080169875
2008-07-17

Level-shifting differential amplifier

#91
20080157847
2008-07-03

DC offset calibration apparatus and method for differential signals

#92
20080122539
2008-05-29

Signal amplification device

#93
20080112712
2008-05-15

Bandpass filter circuit, band-elimination filter circuit, infrared signal processing circuit

#94
20080112711
2008-05-15

Operational amplifier circuit, bandpass filter circuit, and infrared signal processing circuit

#95
20080061847
2008-03-13

Driver circuit and method of controlling the same

#96
20080061745
2008-03-13

Differential amplifier circuit and electric charge control apparatus using differential amplifier circuit

#97
20080048736
2008-02-28

Differential circuit and output buffer circuit including the same

#98
20080037617
2008-02-14

Differential driver with common-mode voltage tracking and method

#99
20080001663
2008-01-03

Low voltage CMOS differential amplifier

#100
20070290753
2007-12-20

Method and system for varying gain exponentially with respect to a control signal

#101
20070285166
2007-12-13

Fully differential sensing apparatus and input common-mode feedback circuit thereof

#102
20070285165
2007-12-13

Low voltage CMOS differential amplifier

#103
20070200623
2007-08-30

Amplifier, and step-down regulator and operational amplifier using the amplifier

#104
20070152753
2007-07-05

System and method for clamping a differential amplifier

#105
20070139116
2007-06-21

Fully differential amplifier with continuous-time offset reduction

#106
20070115057
2007-05-24

Variable gain device

#107
20070013440
2007-01-18

Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers

#108
20070001764
2007-01-04

Signal dependent biasing scheme for an amplifier

#109
20060261891
2006-11-23

Low voltage CMOS differential amplifier

#110
20060255855
2006-11-16

Offset adjusting circuit and operational amplifier circuit

#111
20060202721
2006-09-14

Differential comparator with extended common mode voltage range

#112
20060139097
2006-06-29

Low voltage CMOS differential amplifier

#113
20060132235
2006-06-22

Gain-controlled amplifier, receiver circuit and radio communication device

#114
20060132177
2006-06-22

Linear buffer

#115
20050285673
2005-12-29

Operational amplifier circuit, sample/hold circuit and filter circuit using the operational amplifier circuit

#116
20050285672
2005-12-29

Operational amplifier circuit, sample/hold circuit and filter circuit using the operational amplifier circuit

#117
20050077944
2005-04-14

Linear buffer