[试题] 104上 赖飞罴 数位电子与数位电路 期末考

楼主: vivi432 (vivi432)   2016-01-23 11:30:18
课程名称︰数位电子与数位电路
课程性质︰资工系大二必修
课程教师︰赖飞罴
开课学院:电资学院
开课系所︰资工系
考试日期(年月日):2016/1/4
考试时限(分钟):120分钟
试题 :
1.(20%)
(a) A transistor has T_ox = 40nm,V_TN = 0.6V,μ_n = 500 cm^2/V‧s,L = 2μm,and
W = 20μm. What are K_n and the saturated and linear region values of i_D for
this transistor if V_GS = 3V?
(b) The technology is scaled by a factor of 2. What are the new values of T_OX,
W, L, V_TN, V_GS, K_n, and i_D?
2.(20%)
(a) What is the logic function that is implemented by the gate in Fig.1?
(b) What are the W/L ratios for the transistors, based on the reference
inverter design of Fig.2?
+2.5V ○

┌┘
┌│∣←——┐
| └┐ ┴
| | = Y
└——┼————○
┌——┴——┐
┌┘ ┌┘
A ○┤| B ○┤|
→ →
|__________│
┌┘ ┌┘
C ○┤| D ○┤|
→ →
|__________|
┌┘ ┌┘
E ○┤| F ○┤|
→ →
|__________│


Fig.1
+2.5V ○
|M_L 2/1
┌┘
┌│∣←—————┐
| └┐ ┴
| | υ_O =
└——┼——○
┌┘
υ_1 ○┤| M_S 3/1




Fig.2
3.(20%) What are the rise time, fall time, and average propagation delay
for a symmetrical CMOS inverter with (W/L)_N = 2/1, (W/L)_P = 5/1, V_DD = 2.0V
, K_p' = 4*10^-5 A/V^2, K_n' = 10^-4 A/V^2, V_TN = 0.6V, V_TP = -0.6V,
and C = 0.40 pF?
4.(20%) Calculate the number of transistors required to implement a 8-bit
column decoder using NMOS passtransistor logic.
5.(20%) What are Noise Margins? Please draw the voltage transfer
characteristic(VTC) of an inverter and give the definitions of NM_L and NM_H.
6.(20%) How did Alan Turing break the cipher code of Germany?
作者: madeformylov (睡觉治百病)   2016-01-28 01:29:00
这个图好阿!

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