ClassID:

219819

H03F2203/45028 - 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 differential amplifier amplifying transistors are folded cascode coupled transistors

Recent Application in this class:
#1
20260037013
2026-02-05

SOURCE/SINK LDO WITH REDUCED DEAD BAND

#2
20250260375
2025-08-14

AMPLIFIER CIRCUIT

#3
20250246225
2025-07-31

CLOCK AMPLIFIER CIRCUIT AND MEMORY DEVICE INCLUDING THE SAME

#4
20240291453
2024-08-29

HIGH GAIN, LOW-OFFSET, CLASS AB AMPLIFIER CIRCUIT

#5
20240186967
2024-06-06

Amplifier circuit

#6
20230253938
2023-08-10

Amplifier circuit

#7
20220311396
2022-09-29

Amplifier circuit

#8
20220103127
2022-03-31

Precision high frequency phase adders

#9
20210320634
2021-10-14

Amplifiers suitable for mm-wave signal splitting and combining

#10
20210109151
2021-04-15

Robust architecture for mode switching of a force and measure apparatus

#11
20210013851
2021-01-14

Fully differential rail-to-rail output amplifier with inverter-based input pair

#12
20200366243
2020-11-19

Precision High Frequency Phase Adders

#13
20200321931
2020-10-08

Amplifiers suitable for mm-wave signal splitting and combining

#14
20200295721
2020-09-17

Semiconductor circuitry

#15
20200228066
2020-07-16

Amplifier with reduced power consumption and improved slew rate

#16
20200007099
2020-01-02

Amplifier class AB output stage

#17
20190363675
2019-11-28

Precision high frequency phase adders

#18
20190342128
2019-11-07

Continuous time linear equalizer

#19
20190280659
2019-09-12

Amplifier class AB output stage

#20
20190097845
2019-03-28

Continuous time linear equalizer

#21
20180269836
2018-09-20

Precision high frequency phase adders

#22
20170230005
2017-08-10

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

#23
20160344344
2016-11-24

Apparatus and methods for compensating an operational amplifier

#24
20160056766
2016-02-25

Fast recovery scheme of transconductance gain for folded cascode amplifier

#25
20150357980
2015-12-10

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

#26
20150256138
2015-09-10

Fully differential class A/AB amplifier and method thereof

#27
20110285466
2011-11-24

POWER AMPLIFIER CIRCUIT

#28
20110025379
2011-02-03

Latched comparator and methods therefor

#29
20110001565
2011-01-06

High-speed, multi-stage class AB amplifiers

#30
20100327887
2010-12-30

Chopper-stabilized instrumentation amplifier for impedance measurement

#31
20100295620
2010-11-25

High-speed, multi-stage class AB amplifiers

#32
20100246858
2010-09-30

Amplifier circuit

#33
20100134462
2010-06-03

Voltage amplifier and driving device of display device using the voltage amplifier

#34
20100033240
2010-02-11

Chopper-stabilized instrumentation amplifier for impedance measurement

#35
20090219095
2009-09-03

Operational transconductance amplifier (OTA)

#36
20090219085
2009-09-03

Differential to single-ended conversion circuit and comparator using the circuit

#37
20090189694
2009-07-30

Differential amplifier with accurate input offset voltage

#38
20090153247
2009-06-18

High-speed, multi-stage class AB amplifiers

#39
20080272845
2008-11-06

Operational transconductance amplifier (OTA)

#40
20080272831
2008-11-06

Charge Pump CMOS Circuit

#41
20080183098
2008-07-31

Chopper-stabilized instrumentation amplifier for impedance measurement

#42
20080143440
2008-06-19

Comparator having a preamplifier with power saved while latching data

#43
20080058030
2008-03-06

Transmitter for transmitting a transmission signal

#44
20070285164
2007-12-13

Operational amplifier

#45
20070279132
2007-12-06

Apparatus for biasing a complementary metal-oxide semiconductor differential amplifier

#46
20070260150
2007-11-08

Biomedical signal instrumentation amplifier

#47
20070252648
2007-11-01

Operational amplifier

#48
20070241818
2007-10-18

Class AB folded cascode stage and method for low noise, low power, low-offset operational amplifier

#49
20070200622
2007-08-30

Modulator apparatus operating at low supply voltage, and corresponding method of modulation

#50
20070115049
2007-05-24

Operational amplifier and related noise separation method thereof

#51
20070096814
2007-05-03

Differential amplifiers

#52
20060244531
2006-11-02

Apparatus and method for increasing a slew rate of an operational amplifier

#53
20060125563
2006-06-15

Method for forming elements with reduced variation

#54
20060125562
2006-06-15

Variable gain amplifiers systems and methods

#55
20050266810
2005-12-01

Differential signal comparator

#56
20050218985
2005-10-06

Fully differential amplifier with start up circuit

#57
20050179495
2005-08-18

Apparatus and method for increasing a slew rate of an operational amplifier

#58
20050077962
2005-04-14

Interface circuit for connecting to an output of a frequency converter

#59
20050024142
2005-02-03

Variable gain amplifier system

#60
20050007195
2005-01-13

Low voltage high gain amplifier circuits

#61
17355491
2022-05-17

Amplifier circuit