Assignment_4

Assignment_4 - EE 310 Electronic Circuit Design I Spring...

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2/5/2010 EE 310 Electronic Circuit Design I Spring 2010 Assignment 4 Due: Friday, February 12, in class Basic Applications Constant-current Biasing MOSFET Small-signal Model and AC Analysis MOSFET circuit applications include operation as a switch and as an amplifier. When used as a switch, the device is generally biased in either cutoff or nonsaturation, where its drain-source terminal pair resembles an open or closed switch, respectively. For analog circuit operation, we bias the MOSFET in saturation where it is to behave as a small-signal amplifier. It is important for the MOSFET to have a stable bias current so that there is minimal variation in device parameters and operation region. We conclude our study of Chapter 3 by considering the MOSFET designed as a stabilized current source for biasing. In Chapter 4 we study the MOSFET linear amplifier. We begin by developing small-signal models for the device. Since we are ignoring device capacitance effects, the gate terminal is considered to be an
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Assignment_4 - EE 310 Electronic Circuit Design I Spring...

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