Consider the simple bipolar op-amp circuit in Figure 11.49 with circuit and transistor parameters given in Exercise Problem Ex11.15. Determine the input resistances R i 2 and R i 3 , and the differential-mode voltage gain A d = v o / v d (Ans. R i 2 = 870 k Ω , R i 3 = 21.0 M Ω , A d = 11 , 729 ) .
Consider the simple bipolar op-amp circuit in Figure 11.49 with circuit and transistor parameters given in Exercise Problem Ex11.15. Determine the input resistances R i 2 and R i 3 , and the differential-mode voltage gain A d = v o / v d (Ans. R i 2 = 870 k Ω , R i 3 = 21.0 M Ω , A d = 11 , 729 ) .
Solution Summary: The author explains the input resistances and differential-mode voltage gain of the bipolar operational amplifier circuit.
Consider the simple bipolar op-amp circuit in Figure 11.49 with circuit and transistor parameters given in Exercise Problem Ex11.15. Determine the input resistances
R
i
2
and
R
i
3
, and the differential-mode voltage gain
A
d
=
v
o
/
v
d
(Ans.
R
i
2
=
870
k
Ω
,
R
i
3
=
21.0
M
Ω
,
A
d
=
11
,
729
)
.
11. i) Design a series Op-Amp regulated O/P of 12V which its I/P voltage is 20V. Chose the designed
components and draw the circuit diagram
ii) Design a shunt transistor regulated O/P of 6V which its I/P voltage is 15V. Chose the designed
components and calculate I, with drawing the circuit diagram
Adiff-amp is biased with a constant-current source lo- 0.25mA that has an output resistance of R. - 8MO. The bipolar transistor parameters are B=100, VT = 0.025 V and VA -.
Determine the common-mode input resistance.
O a. Ricm = 538 MA
O b.Ricm- 308 MO
OC Ricm = 808 MO
Od Ricm = 704 MQ
Q2) for the amplifier shown in Figure
1) Determine the voltage gain (Av) and the current
Gain (Ai)
2) Determine The input and output resistance
3) Determine The output voltage Vout
4) Draw The Ac load line
5) Draw the AC equivalent circuit
6) Determine the maximum input voltage (Vi(p-p)) for
maximum output voltage (Vo(p-p)) without distortion.
HH
Vi-20 mv
RB
56 kQ
+₁
D
B = 50
- 10 V
HH
RE
1kQ
Vou
RL
• 10 Ω
ww11
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