Question

[25 points} The figure below shows a differential amplifier. Q1 and Q2 form the differential pair, while O4 and Os form the active loads for O1 and 02, respectively The DC bias current that establishes an appropriate DC voltage at the drains of Q1 and Q2 is not shown. The DC voltage at the gates of Q6 and Q3 is +0.8V and the DC voltage at the gates of Q7, 04 and Qs is -0.8V WnGox p ox For DC bias calculations, you can assume that A - 0 b) What is the input common mode range? c) What is Acm Vai/vicm? +1.5 V 0% 03 REF od 27 Q5 1.5 V

Answer 1

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