D 8.44 Consider the CMOS amplifier of Fig. 8.16(a) when fabricated with a process for which k1n = 4k1p = 400 μA/V2, / Vt / 0.5 V, and /VA /=5 V. Find IREF and (W/L)1 to obtain a voltage gain of -40 V/V and an output resistance of 100 kΩ. Recall that Q2:
and Q3:
are matched. If Q2:
and Q3:
are to be operated at the same overdrive voltage as Q1:
what must their W/L ratios be?
