A current source with a purely capacitive source impedance drives a NMOS common-gate amplifier. Select the common-gate transistor size so that the input time constant is with minimal bias drain...

A current source with a purely capacitive source impedance drives a NMOS common-gate amplifier. Select the common-gate transistor size so that the input time constant is with minimal bias drain current when . Use the device parameters for the 45-nm CMOS process in Table 1.5.