Question: Consider the active mixer shown in Fig., where the LO has abrupt edges and a 50% duty cycle. Also, channel-length modulation and body effect are negligible. The load resistors exhibit mismatch, but the circuit is otherwise symmetric. Assume M1 carries a bias current of ISS.
(a) Determine the output offset voltage.
(b) Determine the IP2 of the circuit in terms of the overdrive and bias current of M1.
