Semester B 2022
Digital Electronic Circuits – Home assignment #1
Due on – 09/03/2022 (please submit a scan of your solution on Moodle)
Problem #1:
𝑉𝑑𝑑 = 5𝑣
𝑅
𝑉𝑡𝑛 = 1𝑣
𝐴
𝐾𝑛 = 50𝑚 𝑣 2
𝑸𝟏
𝑅 = 1000Ω
Repeat the static analysis we have performed for this inverter in class:
a.
b.
c.
d.
Find 𝑉𝑂𝐿 and 𝑉𝑂𝐻
Find the VTC regions of operation (Cutoff, Linear, Saturation…)
Find 𝑉𝐼𝐿 , 𝑉𝐼𝐻 and 𝑉𝑚
Plot the VTC
Problem #2:
In this question you need to design an inverter using the following components:
1. one PMOS transistor with the following parameters:
𝑉𝑡,𝑝 = −1𝑉 ;
1
𝑘′𝑝 = 𝐶𝑂𝑋 𝜇𝑝 = 2𝑚𝐴⁄ 2
2
𝑉
; (
𝑊
) =𝑝=3
𝐿 𝑝
2. one resistor - R=0.5[kΩ]
3. supply voltage Vdd=5[V]
Sketch your circuit and:
a.
b.
c.
d.
Find 𝑉𝑂𝐿 and 𝑉𝑂𝐻
Find the VTC regions of operation (Cutoff, Linear, Saturation…)
Find 𝑉𝐼𝐿 , 𝑉𝐼𝐻 and 𝑉𝑚
Plot the VTC