H03F3/45775 - CPC Classification Index

ClassID:

219456 ⎘

H03F3/45775 - 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 common mode signal rejection in differential amplifiers with FET transistors as the active amplifying circuit by offset reduction by using cross switches

Recent Application in this class:

20250247063

INPUT STAGE FOR A SIGNAL PROCESSING CIRCUIT

20210099139

Differential amplifier with variable neutralization

20200076380

Differential amplifier with variable neutralization

20180269840

Differential amplifier with variable neutralization

20180254752

Reducing offset from an amplifier output without a low pass filter

20180123524

Single-ended amplifier circuit with improved chopper configuration

20160071453

Differential amplifier and display driver including the same

20150054576

Apparatus and methods for chopper amplifiers

20070146065

Chopper amplifier circuit and semiconductor device

20070109043

Operational amplifier with zero offset

20070058438

Differential amplifier circuit and semiconductor device

20060255856

Operational amplifier with less offset voltage

20060244521

Chopper amplifier circuit apparatus operable at low voltage utilizing switched operational amplifier

20050212564

Receiver having full signal path differential offset cancellation capabilities

20050168278

Device and method for nullifying offset voltages in operational amplifiers

20050073358

Differential amplifier circuit and drive circuit of liquid crystal display unit using the same