Programmable Amplifier Circuit Diagram

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This is the Programmable gain differential input amplifier circuit diagram. This programmable gain circuit employs a CD4051 CMOS Analog Multiplexer as a two to four line decoder, with appropriate FET drive for switching between feedback resistors to program the gain to any one of four values. 

Programmable Amplifier Circuit Diagram

Programmable Amplifier Circuit Diagram

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