If NMOS transistor has v_T0 = 1.5 v. Specify the region of operation (cutoff, tr

Question

If NMOS transistor has v_T0 = 1.5 v. Specify the region of operation (cutoff, triode or saturation) and prove it with the condition for the region selected v_GS = 4 V and v_DS = 7 V v_GS = 3 V and v_DS = 1.2 V v_GS = 5 V and v_DS = 9 V v_GS = 0.5 V and v_DS = 4 V Determine Drain current and region of NMOS transistor in the next circuit with a with: KP = 40 mu A/v^2, v_T0 = 1.5 v, L = 12.5 mu m and W = 250 mu m. The next circuit uses a NMOS amplifier with the characteristics shown. Find: v_GS(t), v_DSQ, v_DSQ max, v_DSQ min and A_v. If the next NMOS circuit has V_T0 = 1 v, and K = 2.5 mA/v^2. Find: I_DQ, and v_DSQ. Draw the circuit diagram of a two-input CMOS OR gates Draw the circuit diagram of a three-input CMOS OR Gates, Draw the equivalent circuit (open and closed switches) if all inputs are High Draw the equivalent circuit (open and closed switches) if all inputs are Low

Explanation / Answer

for Vgs<Vt--cut off region;

for Vds<Vgs-Vt--triode or linear region

for Vds>Vgs-Vt--saturation region

Vt=1.5V

a)Vgs=4,Vds=7V

so  Vds>Vgs-Vt--saturation region

b)Vgs=3V,Vds=1.2V

so for Vds<Vgs-Vt--triode or linear region

c)Vgs=5V,Vds=9V

so  Vds>Vgs-Vt--saturation region

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