(c) Figure Q.1 shows a MOSFET amplifier. Given that: Vos (th) 2 V, k = 130 mA/V2 and ras = 00. Vs Ci 1 µF Rsig 500 Ω RG 100 ΚΩ Zin ww + VDD (+12 V) RD 3 ΚΩ C2 10 µF IDQ + RL 5 ΚΩ VGSQ RSI 0.6 ΚΩ RS2 0.9 ΚΩ www - Vss (-6V) 22 µF www Zout Vo Figure Q.1. MOSFET amplifier circuit (i) By mathematical approach, prove that the transistor Q-points, Vosq = 2.14 V and IDQ 2.57 mA. (ii) Draw the small-signal ac equivalent circuit at middle frequency. (iii) Calculate gm, Zin and Zout = (iv) Derive the equation for voltage gain, A., and calculate the voltage gain, Avs. (v) If Rsi is short-circuited, what will be the effect towards Aus?
(c) Figure Q.1 shows a MOSFET amplifier. Given that: Vos (th) 2 V, k = 130 mA/V2 and ras = 00. Vs Ci 1 µF Rsig 500 Ω RG 100 ΚΩ Zin ww + VDD (+12 V) RD 3 ΚΩ C2 10 µF IDQ + RL 5 ΚΩ VGSQ RSI 0.6 ΚΩ RS2 0.9 ΚΩ www - Vss (-6V) 22 µF www Zout Vo Figure Q.1. MOSFET amplifier circuit (i) By mathematical approach, prove that the transistor Q-points, Vosq = 2.14 V and IDQ 2.57 mA. (ii) Draw the small-signal ac equivalent circuit at middle frequency. (iii) Calculate gm, Zin and Zout = (iv) Derive the equation for voltage gain, A., and calculate the voltage gain, Avs. (v) If Rsi is short-circuited, what will be the effect towards Aus?
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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
Transcribed Image Text:(c) Figure Q.1 shows a MOSFET amplifier. Given that: Vos (th) 2 V, k = 130
mA/V2
and ras = 00.
Vs
Ci
1 µF
Rsig
500 Ω
RG
100 ΚΩ
Zin
ww
+ VDD
(+12 V)
RD
3 ΚΩ
C2
10 µF
IDQ
+
RL
5 ΚΩ
VGSQ
RSI
0.6 ΚΩ
RS2
0.9 ΚΩ
www
- Vss
(-6V)
22 µF
www
Zout
Vo
Figure Q.1. MOSFET amplifier circuit
(i) By mathematical approach, prove that the transistor Q-points, Vosq = 2.14 V
and IDQ 2.57 mA.
(ii) Draw the small-signal ac equivalent circuit at middle frequency.
(iii) Calculate gm, Zin and Zout
=
(iv) Derive the equation for voltage gain, A., and calculate the voltage gain,
Avs.
(v) If Rsi is short-circuited, what will be the effect towards Aus?
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