Hw6.ece3813.ThaiLe.pdf - ① af Vs The NMOS transistor below has Vt=0.4V and VA=10V which means channel effect is considered The dc voltage at the

Hw6.ece3813.ThaiLe.pdf - ① af Vs The NMOS transistor...

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The NMOS transistor below has Vt=0.4V, and VA=10V which means channel e ff ect is considered. The dc voltage at the source is measured as -0.6V. Assume all three capacitors to be ideal (infinite large). (a) What is the dc voltage at the drain terminal? (b) What is the overdrive voltage at which the transistor is operating? (c) What is the region in which the MOSFET is operating? (d) Find the values of gm and ro. (e) If Y is connected to the ground and a small signal vx is at X, find input resistance Rin and overall voltage gain LaTeX: \frac{v_z}{v_x} Assam Transit on af . Vs = - O . GV i VB = ? I is inactive I Ig = o I on A shq Vp = A - IDR b = l 0.1 × 12 = - O . 2 bl Vcrs = Va . - vs = o I - o 6) = G. 6 V Ver = Vets - Vt = 0.6 - a 4 = a 2 V c) Vpn - Avi Voss - or 2-10.6=0.40 i Vow = 0.2 V DD > Vbs > Vor MOSFET is in active region . ( saturation ) d) No = IA = = too Kh Ip Oy
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gm - ku Vor In - I knv.int Yea ) I D= gm V.v let If ) 2 ID 2×0 I Sm - 5- = 0.96 ME no II. = not = rooks mA e) Small signal AC equivalent circuit vi.
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  • Fall '17
  • Yan (Rockee) Zhang

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