Class 8

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# Class 8 - PowerPoint PPT Presentation

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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## PowerPoint Slideshow about 'Class 8' - angelo

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Presentation Transcript

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

IC0 + iout

RL

VS

vin

VB0

REG

Class 8
• Current generator
• The forced DC current on RL
• The trans-conductance
• The output resistance

VS+

IN

OUT

RB

R1

R2

REG

VS-

Class 8
• Use of the large output impedance: active load.

vo1

vo2

VS+

RC

1

IN

voutd

RL1

2

RB

RE

RL2

VS-

Class 8
• Phase splitter
• Voltage gains
• Differential output

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