1. Derive expressions for the differential and common mode gains of the amplifier and thence derive...

1. Derive expressions for the differential and common mode gains of the amplifier and thence derive the common mode rejection ratio (CMRR). Explain the design steps necessary to achieve a high CMRR.

2. If the differential gain of the first stage of the amplifier is 100 and the -& resistor values associated with the second stage are R1= 15k, R2= 10.5k, R3= 200k and R4= 101k, calculate the CMRR of the whole system.

3. Explain the operation of a Lock – in amplifier system of which the output is independent of the phase of the measurand.

Expert Solution

these pictures contains the answer of the question no. 1.

Answer of question no. 2

Manojponduru answered 2 years ago

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