Assume the transistors have a threshold voltage of 0.5 V and 12 μnCoxWL = 4.3 mA/V2. The body is tied to ground. Specify whether the circuits below are PMOS or NMOS, and whether they are in cut-off, triode, or saturation mode of operation. Calculate IS, VGS, VDS, gm, ro (VA = 50 V), AC gain, and Rin. Type (NMOS or PMOS): Operation mode: VGS: VDS : IS: gm : r0 : AC Gain: Rin :