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Class 8

V S+. ∞. IN. 1. OUT. R B. R 0. R L. V S-. Class 8. The application of the current mirror for approaching the voltage gain of the CC to 1. I C0 + i out. R L. V S. v in. V B0. R EG. Class 8. Current generator The forced DC current on R L T he trans-conductance

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Class 8

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  1. VS+ ∞ IN 1 OUT RB R0 RL VS- Class 8 The application of the current mirrorfor approaching the voltage gain of the CC to 1

  2. IC0 + iout RL VS vin VB0 REG Class 8 • Current generator • The forced DC current on RL • The trans-conductance • The output resistance

  3. VS+ ∞ IN ∞ OUT RB R1 R2 REG VS- Class 8 • Use of the large output impedance: active load.

  4. vo1 vo2 VS+ RC ∞ 1 ∞ IN voutd RL1 ∞ 2 RB RE RL2 VS- Class 8 • Phase splitter • Voltage gains • Differential output

  5. C C B 1 2 2 B 1 E E Class 8 • Pairs of transistors • Darlington composite (Sziklai) • Parameters of the resulting transistors: • h21(D) = (h21)2h21(c) = (h21)2 • h11(D) = h11(1)+h21h11(2)= 2h11(1)h11(c) = h11(1) • g21(D) = 0.5g21(2)g21(c) = g21(2) • Physical model

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