Mathematics · Differential Amplifiers
For a standard BJT differential pair with a total tail current of 5 mA, thermal voltage V T = 25 mV, and β = 100, what is the approximate differential input impedance?
- 1200 Ω approx
- 22 MΩ approx
- 320 kΩ approx
- 42 kΩ approx✓
Correct answer
2 kΩ approx
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