Suppose Vcc=10V, the transistors are matched with Is=33fA and B=200, and the resistors have the following values: R₁ R₂=5k and R3=R4=292. Let VBE = VEB=0.7V and V₁= 26mV a. For v₁=0, estimate the output resistance of the circuit.

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VIO
R₁
2₁
R₂
-Vcc
2₂
+Vcc
+Vcc
23
R3
R₁
24
RL
VO
Suppose Vcc=10V, the transistors are matched with
Is=33fA and B=200, and the resistors have the following
values: R₁ R₂=5k and R3-R4=292.
Let VBE = VEB = 0.7V and V₁ = 26mV
a. For v₁=0, estimate the output resistance
of the circuit.
-Vcc
Figure 12.17 A class AB output stage with an input buffer. In addition to providing a high input resistance,
the buffer transistors Q, and Q₂ bias the output transistors Q3 and 24-
Transcribed Image Text:VIO R₁ 2₁ R₂ -Vcc 2₂ +Vcc +Vcc 23 R3 R₁ 24 RL VO Suppose Vcc=10V, the transistors are matched with Is=33fA and B=200, and the resistors have the following values: R₁ R₂=5k and R3-R4=292. Let VBE = VEB = 0.7V and V₁ = 26mV a. For v₁=0, estimate the output resistance of the circuit. -Vcc Figure 12.17 A class AB output stage with an input buffer. In addition to providing a high input resistance, the buffer transistors Q, and Q₂ bias the output transistors Q3 and 24-
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