The NMOS in the circuit below has kn = 800 mA/V2 and Vt = 3 V. The diode is a blue power LED that can be represented by the constant voltage model with Vd = 2.5 V. (a) When the switch is closed, find VG, VD, VS, and ID. (b) When the switch is open, find VG, VD, VS, and ID.
A. (3 pts) Find the DC bias current, ID. (Ignore the Early effect). B. (3 pts) Find the transconductance of Q1, gm1. (Ignore the Early effect). C. (4 pts) What is the lowest possible output voltage v0 where Q1 still remains in saturation? (Ignore the Early effect). D. (4 pts) Given voltage gain, AV, = -40 V/V and VAn= |VAp|, find VAn. (Hint, output resistances r01 and r02 are equal). Given NMOS integrated common source amplifier below, with parameters as listed, answer the following questions. Make sure to show your work and answers on work paper, including the answer with units, and put a box around the final answers. Only your work paper will be graded. Assume all transistors are in saturation.