22. The NMOS transistor in the circuit shown has k'n (W/L) = 1.5 mA/V². Its approximate threshold voltage Vt is:
(a) 0.90 V
(b) 1.45 V
(c) 1.80 V
(d) 1.50 V
ID=kn (W) [(VGS-Vt)²]
0.492x1²x1.5x[(5-0.08)²]
Vt= triode 1.5-0.08 V
VDD=5V
Ro <-10 AS
0.08 V
VIX TO = 0.1492m YOY
VDD=5V + Ro