Derive AV for this circuit assuming RL=∞, draw the transfer function on the first plot above, and label AV. Explain whether you expect clipping or not.

MOSFETs and BJTs

This is a small-signal problem built up towards a transfer function. Suppose the MOSFETs drawn have $I_{D} = 1 mA$ when $V_{GS} = 2.5 V$ , and $V_{t h} = 0.5 V$ .

(a) Derive $A_{V}$ for this circuit assuming $R_{L} = \infty$ , draw the transfer function on the first plot above, and label $A_{V}$ . Explain whether you expect clipping or not.

(b) Derive $A_{V}$ for this circuit assuming $R_{L} = 50Ω$ , draw the transfer function on the second plot above, and label $A_{V}$ .

(c) Derive $A_{V}$ for this circuit assuming $R_{L} = 50Ω$ and a coupling capacitor $C$ , draw the transfer function on the third plot above, and label $A_{V}$ .

Derive AV for this circuit assuming RL=∞, draw the transfer function on the first plot above, and label AV. Explain whether you expect clipping or not.

MOSFETs and BJTs

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