Patents-Review.com
ClassID:

219582 ⎘

H03F2200/271 - CPC Classification

Classification description:

Indexing scheme relating to amplifiers the DC-isolation amplifier, e.g. chopper amplifier, modulation/demodulation amplifier, uses capacitive isolation means, e.g. capacitors

Recent Application in this class:
#1
20260066862
2026-03-05

LEAKAGE TOLERANT INTERFACE CIRCUIT WITH INCREASED SIGNAL GAIN

 #2
20260058622
2026-02-26

Ripple Reduction Using Chopper Amplifiers

 #3
20260005657
2026-01-01

Low-EMI capacitively-coupled Class-D amplifiers with voltage boosting

 #4
20250300614
2025-09-25

AMPLIFIER

 #5
20250211183
2025-06-26

INSTRUMENTATION AMPLIFIER AND SIGNAL DETECTION SYSTEM

 #6
20240356508
2024-10-24

CAPACITIVELY COUPLED CHOPPER INSTRUMENTATION AMPLIFIER AND CONTROL METHOD THEREOF

 #7
20240313825
2024-09-19

CIRCUIT STRUCTURE TO IMPROVE RELIABILITY OF POWER LINE COMMUNICATION

 #8
20240133934
2024-04-25

Capacitance measurement circuit

 #9
20230412132
2023-12-21

Voltage Generation Circuitry with Reduced Settling Time

 #10
20230336135
2023-10-19

SEMICONDUCTOR CIRCUIT

 #11
20230118397
2023-04-20

Input current trim for chopper operational amplifier

 #12
20220231639
2022-07-21

Fast settling ripple reduction loop for high speed precision chopper amplifiers

 #13
20220190794
2022-06-16

Circuit element pair matching method and circuit

 #14
20220077829
2022-03-10

Chopper amplifiers with low intermodulation distortion

 #15
20210359650
2021-11-18

Isolation circuit systems and methods thereof

 #16
20210234518
2021-07-29

Low cost wideband tunable LNA

 #17
20210126588
2021-04-29

Amplifier

 #18
20210021241
2021-01-21

Isolation circuit

 #19
20200412308
2020-12-31

Capacitive-coupled chopper instrumentation amplifiers and associated methods

 #20
20200220510
2020-07-09

Circuit arrangement and a method for operating a circuit arrangement

 #21
20200119701
2020-04-16

Power amplification device, terminal having the same, and base station having the same

 #22
20190207573
2019-07-04

Chopper-stabilized amplifier with analog-driven level shifter

 #23
20190158035
2019-05-23

Capacitively coupled chopper amplifier

 #24
20190158034
2019-05-23

Chopper amplifiers with high pass filter for suppressing chopping ripple

 #25
20190149108
2019-05-16

Power-on-reset and phase comparator for chopper amplifiers

 #26
20190131943
2019-05-02

Capacitive-coupled chopper instrumentation amplifiers and associated methods

 #27
20190068144
2019-02-28

Bidirectional current sense amplifier

 #28
20180342989
2018-11-29

Isolation circuit

 #29
20180337639
2018-11-22

Ripple reduction filter for chopped amplifiers

 #30
20180323759
2018-11-08

Galvanically isolated amplifiers and related methods

 #31
20180323754
2018-11-08

Power amplification device, terminal having the same, and base station having the same

 #32
20180123524
2018-05-03

Single-ended amplifier circuit with improved chopper configuration

 #33
20180091103
2018-03-29

Ripple reduction method for chopper amplifiers

 #34
20180076780
2018-03-15

Fast settling capacitive gain amplifier circuit

 #35
20180076779
2018-03-15

Fast settling capacitive gain amplifier circuit

 #36
20170281037
2017-10-05

Active electrode having a closed-loop unit-gain amplifier with chopper modulation

 #37
20170207761
2017-07-20

Low noise amplifier circuit

 #38
20170115684
2017-04-27

Switched-capacitor bandgap reference circuit using chopping technique

 #39
20170085251
2017-03-23

PREAMPLIFIER

 #40
20170077881
2017-03-16

Chopper stabilized amplifier with synchronous switched capacitor noise filtering

 #41
20170019080
2017-01-19

Gated CDS integrator

 #42
20160380598
2016-12-29

Pseudo-random chopper amplifier

 #43
20160294332
2016-10-06

Gated CDS integrator

 #44
20160276989
2016-09-22

Semiconductor integrated circuit device

 #45
20160248455
2016-08-25

POP FREE AUTO-CHOPPER

 #46
20160173041
2016-06-16

Hot-swap current-sensing system

 #47
20160079941
2016-03-17

Instrumentation amplifier

 #48
20160072458
2016-03-10

Detecting device and electronic apparatus

 #49
20150357980
2015-12-10

Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier

 #50
20150357979
2015-12-10

Operational amplifier

 #51
20150065908
2015-03-05

Reconfigurable measuring apparatus and method for controlling apparatus

 #52
20150054576
2015-02-26

Apparatus and methods for chopper amplifiers

 #53
20140340145
2014-11-20

Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier

 #54
20140312967
2014-10-23

Chopper amplifier

 #55
20130208922
2013-08-15

Integrated amplifier for driving acoustic transducers

 #56
20110316621
2011-12-29

Low input bias current chopping switch circuit and method

 #57
20110241782
2011-10-06

Power amplifier

 #58
20100327887
2010-12-30

Chopper-stabilized instrumentation amplifier for impedance measurement

 #59
20100033240
2010-02-11

Chopper-stabilized instrumentation amplifier for impedance measurement

 #60
20090295475
2009-12-03

Transformer-capacitor enhancement circuitry for power amplifiers

 #61
20090128237
2009-05-21

Switching amplifiers

 #62
20080238538
2008-10-02

Receiving device and related method for calibrating DC offset

 #63
20080218258
2008-09-11

Digital isolator with communication across an isolation barrier

 #64
20080197834
2008-08-21

Signal detecting circuit

 #65
20080183098
2008-07-31

Chopper-stabilized instrumentation amplifier for impedance measurement

 #66
16946342
2024-04-09

Input boosting for chopped neural recording systems

 #67
15854135
2019-03-05

Peak detector and operational amplifier circuit therein

 #68
15467417
2018-06-19

Ripple reduction filter for chopped amplifiers

 #69
15165809
2018-03-06

Filter-less chopping for offset cancellation