Class AB Output Stage
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1 Class AB Output Stage /2 BB T V V Q S N P L BEN EBP BB I Ie i i i v v V transfer characteristic
description
Class AB Output Stage. transfer characteristic. Output Resistance. Biasing Class AB Circuit Using Diodes. If the junction area of the output devices, Q N and Q P , is n times that of the biasing devices D 1 and D 2 , a quiescent current I Q = n I BIAS flows in the output devices. - PowerPoint PPT Presentation
Transcript of Class AB Output Stage
1
Class AB Output Stage
/ 2BB TV VQ S
N P L
BEN EBP BB
I I e
i i iv v V
transfer characteristic
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Output Resistance
out
0.025 V
eN eP
Te
T
R r rVri
V
3
If the junction area of the output devices, QN and QP, is n times that of the biasing devices D1 and D2, a quiescent current IQ = n IBIAS flows in the output devices.
Biasing Class AB Circuit Using Diodes
BIASQI n I
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Biasing Class AB Circuit Using the VBE Multiplier
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1
BERVIR
1 /BIAS 1
BE TV VR SI I I e
