ClassID:

219311

H03F3/347 - CPC Classification

Classification description:

Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements; Dc amplifiers in which all stages are dc-coupled with semiconductor devices only in integrated circuits

Recent Application in this class:
#1
20250030386
2025-01-23

POWER AMPLIFIER SYSTEMS INCLUDING CONTROL INTERFACE AND WIRE BOND PAD

#2
20240310325
2024-09-19

POTENTIOSTAT WITH OFFSET CALIBRATION

#3
20240146299
2024-05-02

Voltage follower circuit

#4
20230420968
2023-12-28

CONTROLLED TRANSITION TO REGULATION

#5
20230412132
2023-12-21

Voltage Generation Circuitry with Reduced Settling Time

#6
20220393653
2022-12-08

Power amplifier modules including semiconductor resistor and tantalum nitride terminated through wafer via

#7
20220240014
2022-07-28

Audio circuit for interfacing with digital or analog audio signals

#8
20210336445
2021-10-28

Controlled transition to regulation

#9
20210262977
2021-08-26

Potentiostat with offset calibration

#10
20210050826
2021-02-18

Power amplifier systems with control interface and bias circuit

#11
20210048837
2021-02-18

Activation circuit for activating a drive target

#12
20200321913
2020-10-08

Swing tracking and control

#13
20200036344
2020-01-30

Amplifier

#14
20200014333
2020-01-09

Electric circuit and electronic apparatus

#15
20190199308
2019-06-27

Signal amplifier device

#16
20190158045
2019-05-23

Power amplifier modules including transistor with grading and semiconductor resistor

#17
20190020323
2019-01-17

Voltage-to-current transconductance operational amplifier with adaptive biasing

#18
20180316324
2018-11-01

Offset trimming for differential amplifier

#19
20180159485
2018-06-07

Source follower

#20
20170264273
2017-09-14

Apparatuses and methods for voltage buffering

#21
20170257070
2017-09-07

Power amplifier modules with bonding pads and related systems, devices, and methods

#22
20160380602
2016-12-29

Power amplifier modules including tantalum nitride terminated through wafer via and related systems, devices, and methods

#23
20160380594
2016-12-29

Power amplifier modules with harmonic termination circuit and related systems, devices, and methods

#24
20160379944
2016-12-29

Power amplifier modules with power amplifier and transmission line and related systems, devices, and methods

#25
20160314841
2016-10-27

High performance digital to analog converter

#26
20160299519
2016-10-13

Zero drift, limitless and adjustable reference voltage generation

#27
20160218699
2016-07-28

Apparatuses and methods for voltage buffering

#28
20160147247
2016-05-26

Low voltage, highly accurate current mirror

#29
20150326183
2015-11-12

Power amplifier modules with bifet and harmonic termination and related systems, devices, and methods

#30
20150326182
2015-11-12

Power amplifier modules including bipolar transistor with grading and related systems, devices, and methods

#31
20150326181
2015-11-12

Power amplifier modules including wire bond pad and related systems, devices, and methods

#32
20150263758
2015-09-17

High performance digital to analog converter

#33
20150042304
2015-02-12

Charge to voltage conversion circuit for WIM sensor and WIM sensor with same

#34
20130038384
2013-02-14

Canceling third order non-linearity in current mirror-based circuits

#35
20130002351
2013-01-03

Circuit comprising transistors that have different threshold voltage values

#36
20120206208
2012-08-16

Wide band LNA with noise canceling

#37
20120188019
2012-07-26

Output circuit

#38
20120098574
2012-04-26

Filter circuit and optical disk device including the same

#39
20120086448
2012-04-12

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

#40
20120025737
2012-02-02

Current driving circuit

#41
20120001605
2012-01-05

Differential amplifier circuit that can change current flowing through a constant-current source according to load variation, and series regulator including the same

#42
20110273231
2011-11-10

SEMICONDUCTOR INTEGRATED CIRCUIT

#43
20110193635
2011-08-11

Wide band LNA with noise canceling

#44
20110148953
2011-06-23

DISPLAY APPARATUS AND DRIVING DEVICE FOR DISPLAYING

#45
20110102082
2011-05-05

Area and power efficient, high swing and monolitihic ground centered headphone amplifier circuit operable on a low voltage

#46
20110102058
2011-05-05

Circuit for generating a reference voltage

#47
20110102049
2011-05-05

Circuit for generating a reference voltage with compensation of the offset voltage

#48
20110062937
2011-03-17

Low voltage bandgap voltage reference circuit

#49
20110025280
2011-02-03

Regulator having phase compensation circuit

#50
20110018629
2011-01-27

Reference voltage supply circuit including a glitch remover

#51
20100320993
2010-12-23

Constant voltage circuit

#52
20100295529
2010-11-25

Chopper stabilized bandgap reference circuit and methodology for voltage regulators

#53
20100289568
2010-11-18

Low-noise, low-power, low drift offset correction in operational and instrumentation amplifiers

#54
20100289564
2010-11-18

ELECTRONIC DEVICE AND A METHOD OF BIASING A MOS TRANSISTOR IN AN INTEGRATED CIRCUIT

#55
20100182085
2010-07-22

Error amplifier structures

#56
20100156533
2010-06-24

Regulator circuit

#57
20100045382
2010-02-25

Bias circuit and semiconductor integrated circuit including the bias circuit

#58
20100007422
2010-01-14

Amplifier circuit

#59
20090243392
2009-10-01

METHODS FOR SHIFTING COMMON MODE BETWEEN DIFFERENT POWER DOMAINS AND APPARATUS THEREOF

#60
20090146729
2009-06-11

Constant voltage circuit, constant voltage supply system and constant voltage supply method

#61
20090079505
2009-03-26

Ground skimming output stage

#62
20080284516
2008-11-20

Monolithic LNA support IC

#63
20080272840
2008-11-06

Multiple-input and multiple-output amplifier

#64
20080258779
2008-10-23

Semiconductor integrated circuit

#65
20080157866
2008-07-03

Capacitance multiplier circuit

#66
20080157865
2008-07-03

TUNABLE CAPACITANCE MULTIPLIER CIRCUIT

#67
20080150632
2008-06-26

Gigabit ethernet transceiver with analog front end

#68
20080036442
2008-02-14

Constant-current circuit and system power source using this constant-current circuit

#69
20080001661
2008-01-03

Regulator circuit

#70
20070291930
2007-12-20

Output stacking architecture for an amplifier

#71
20070257942
2007-11-08

Display apparatus and driving device for displaying

#72
20070257712
2007-11-08

Low Current, High Gain, Single to Differential Buffer

#73
20070249303
2007-10-25

Low noise CMOS transmitter circuit with high range of gain

#74
20070228257
2007-10-04

Trans-impedance amplifier with offset current

#75
20070222511
2007-09-27

Auto gain controller

#76
20070216472
2007-09-20

Circuits for generating a reference voltage

#77
20070159228
2007-07-12

Systems and methods for controlling termination resistance values for a plurality of communication channels

#78
20070120604
2007-05-31

Low voltage low power class A/B output stage

#79
20070120602
2007-05-31

Variable gain power amplifier

#80
20070109064
2007-05-17

Piezoelectric transducer signal processing circuit

#81
20070108957
2007-05-17

Constant-current circuit and system power source using this constant-current circuit

#82
20070104493
2007-05-10

Optical receiver preamplifier

#83
20070069771
2007-03-29

MOSFET transistor amplifier with controlled output current

#84
20070052454
2007-03-08

Technique for determining a load current

#85
20070008020
2007-01-11

Output buffer circuit

#86
20060255850
2006-11-16

High speed latch circuits using gated diodes

#87
20060238256
2006-10-26

Gigabit ethernet transceiver with analog front end

#88
20060202755
2006-09-14

Gigabit ethernet transceiver with analog front end

#89
20060198176
2006-09-07

Low noise amplifier

#90
20060192614
2006-08-31

Gigabit ethernet transceiver with analog front end

#91
20060176104
2006-08-10

Ultra wideband filter based on a pair of cross-coupled transistors

#92
20060152109
2006-07-13

Transconductance circuit for piezoelectric transducer

#93
20060132240
2006-06-22

Source follower and current feedback circuit thereof

#94
20060132171
2006-06-22

Systems and methods for controlling termination resistance values for a plurality of communication channels

#95
20060114061
2006-06-01

Class AB CMOS output circuit equipped with CMOS circuit operating by predetermined operating current

#96
20060071710
2006-04-06

Auto gain controller

#97
20060066390
2006-03-30

Analog circuit for calculating square and reciprocal of a current

#98
20060066361
2006-03-30

Apparatus and method for voltage conversion

#99
20060061421
2006-03-23

Ground skimming output stage

#100
20060050581
2006-03-09

Sense amplifier circuits and high speed latch circuits using gated diodes

#101
20060049858
2006-03-09

Buffer capable of controlling slew rate in drive IC

#102
20050225573
2005-10-13

Display apparatus and driving device for displaying

#103
20050225392
2005-10-13

Class AB output stage circuit with stable quiescent current

#104
20050218994
2005-10-06

Low-voltage, low-power transimpedance amplifier architecture

#105
20050206444
2005-09-22

Methods and systems for decoupling the stabilization of two loops

#106
20050189993
2005-09-01

Gigabit Ethernet transceiver with analog front end

#107
20050128005
2005-06-16

Transconductance amplifier with multi-emitter structure for current balance in a multi-phase regulator

#108
20050062509
2005-03-24

Buffer/voltage-mirror arrangements for sensitive node voltage connections

#109
20050024143
2005-02-03

Analog electronic device

#110
20050017992
2005-01-27

Display apparatus and driving device for displaying