(a) The acronym CMOS stands for: (b) In the typical \"ladder\" bias circuit used
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(a) The acronym CMOS stands for: (b) In the typical "ladder" bias circuit used for discrete common emitter or discrete common source amplifiers, resistors R1 and R2 (refer to Fig. 3) represent part of a voltage divider network for a CS circuit, but not for a CE circuit. Explain. (c) Why are the source and drain terminals of most integrated circuit FETs interchangeable, but not for discrete devices? (d) The term W/L in the expression for drain current is often referred to as the (e) We studied the enhancement-type FET in detail. What was the other type mentioned in class? -type FETExplanation / Answer
a) Acronym for CMOS is Complementary Metal Oxide Semiconductor.
b) Figure is not Given.
c)Source and Drain of the Mosfet are generally same and can be interchanged in IC. However early days discrete dvices comes with another diode placed between source and drain region so as to avoid substrate interference in the channel. Therefore to keep the Diode Reverse Biased, Source and Drain Terminals are fixed.
Moreever another reason can be; Generally what happens is Source is tied to body so as to avoid Body Effect and discrete transsitors are just placed on board to make circuits. Therefore in that case it is necessory to distinguish between Source and Drain.
d) Aspect Ratio
e) Depletion type FET
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