Given the diferrential amplifier with a constant-current source at the emitter (instead of the resistor RE),Assume Q1, Q2, and Q3 are identical transistors with β=hfe=100 and VBE=0.7V. (a) Determine the common-mode gains Acs (for single-ended) and Acd (for double ended). For AC analysis: The constant current source has an infinite equivalent resistance. (b) Determine the common-mode rejection ratio CMRR for single-ended output. (c) Determine the common-mode rejection ratio CMRR for double-ended output.

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Given the diferrential amplifier with a constant-current source at the emitter (instead of the resistor RE),Assume Q1, Q2, and Q3 are identical transistors with β=hfe=100 and VBE=0.7V.

(a) Determine the common-mode gains Acs

(for single-ended) and Acd (for double ended).
For AC analysis: The constant current source has an infinite equivalent resistance.
(b) Determine the common-mode rejection ratio CMRR for single-ended output.
(c) Determine the common-mode rejection ratio CMRR for double-ended output.

Vec=9V
Re
10k2
Re
Vol
Vout
Vo2
QI
Q2
Vs1
Vs2
Io
Q3
R1
Ika
Constant
Current
Source
3R2
5.īkO
Vee=-9V
Transcribed Image Text:Vec=9V Re 10k2 Re Vol Vout Vo2 QI Q2 Vs1 Vs2 Io Q3 R1 Ika Constant Current Source 3R2 5.īkO Vee=-9V
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