1. Identify the type of sampling and mixing in the feedback amplifier circuits shown below: +Vcc a. b. Visig Rag & C=a Visz C- Ring & Co RB₂ RBI وله www Rf sim ML + Uf -VEE ERC. +VDD ERE ERD. - VEE Coo C=∞ {Rs M&B ++ Vec fig.). Nout Vout ERL fig.2. Yout fig.3.

Determine the value of Vo, of a 5-bit weighted resistor DAC, where Vref= 5V, R = lkN, Rr = 400 Q, and the following digital input is applied: (a) 10001 (b) 00100 With the aid of a 4-bit R-2R ladder digital to analog converter circuit, derive the general expression for Vout-

Q2. The overall gain of a multistage amplifier is 140. When negative voltage feedback is applied, the gain is reduced to 17.5. Find the fraction of the output that is fedback to the input.

EXPLAIN COMMON DRAIN, MULTISTAGE ( NEED ONLY HANDWRITTEN SOLUTION PLEASE OTHERWISE DOWNVOTE).