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D 8.3 Sketch the p-channel counterpart of the current-source circuit of Fig. 8.1. Note that while the circuit of Fig. 8.1 should more appropriately be called a current sink, the corresponding PMOS circuit is a current source. Let V DD = 1.3 V, Vt = 0.4 V, Q1 and Q2 be matched, and μpCox = 80 μA/V2. Find the device W/L ratios and the value of the resistor that sets the value of I REF so that a nominally 80-μA output current is obtained. The current source is required to operate for VO as high as 1.1 V. Neglect channel-length modulation.