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Find the block diagram representation for inverting amplifier with feedback

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in Linear Integrated Circuits by (41.4k points)
Find the block diagram representation for inverting amplifier with feedback

The question was asked during an interview for a job.

Origin of the question is Voltage Shunt Feedback Amplifier topic in division Operational Amplifier Characteristics of Linear Integrated Circuits

1 Answer

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Block diagram representation for inverting amplifier with feedback consists of:

1. Summer/Summing Junction - at input

2. Op-amp (open loop gain A)

3. Feedback network - parallel resistor Rf

The block diagram shows:

- Input signal going to summing junction

- Op-amp block with open loop gain

- Feedback path from output through Rf to summing junction

Answer: (a) Input - Summing junction - Amplifier - Output with feedback

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