lecture 7: models for integrated active devices...1 lecture 7: models for integrated active devices...
TRANSCRIPT
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Lecture 7: Models for Integrated Active Devices
• Notes from – P. Allen, Analog Integrated
Circuits and Systems
• Review of MOS, BJT and Single Transistor Amplifiers
How does the BJT work?
• The BJT base emitter junction is forward biased• A small percentage of electrons crossing the base combine with holes• Electrons that reach the collector depletion region are swept and form the collector current
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Large Signal Model for the BJT (forward Active)
Small Signal BJT
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MOS Structure
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Simple Large Signal MOSFET Model
Bulk Effect
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MOSFET Small-Signal Model
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Small-Signal Frequency Dependent Model
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