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If the transistor parameter are β = 180 and early voltage VA = 140 V and it is biased at ICQ = 2 mA, the values of hybrid-π parameter gm, rx and r0 are respectively:
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- 14 A/V, 2.33 kΩ, 90 kΩ
- 14 A/V, 90 kΩ, 2.33 kΩ
- 77 mA/V, 2.33 kΩ, 70 kΩ
- 77.2 A/V, 70 kΩ, 2.33 kΩ
Correct Option: C
| gm = | = | = 0.0769 ≈ 77 mA/V | ||
| VT | 26 × 10–3 |
| rπ = | = | = 2.33 kΩ | ||
| gm | 77 × 10–3 |
| r0 = | = | = 70 kΩ | ||
| ICQ | 2 × 10–3 |
