Unformatted text preview: c. State the approximate expression for the no—Ioad voltage gain,
AV and state the condition for the approximate expression to be
valid. Using this approximate expression, calculate the required
value for RD to obtain AV = -10. Check if the condition for using the approximate expression is met. [2 marks]
DC Analysis — Biasing Design
d. Calculate the quiescent drain current, IDQ, given VGSQ = 8.2 V. [2 marks]
e. Determine the bias line equation of the network by determining the expression for the DC gate-source voltage, VGS in terms of V0 , ID and Rs.
f. With the quiescent values found for IDQ ad VGSQ , calculate VG
using the bias line equation, assuming R5 = 1 k9.
9. State the expression for the DC gate voltage, VG in terms of VDD, R1 and R2. Using the value found for V0, determine suitable values for resistors R1 and R2 in the MS) range. _
[2 marks] ...
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- Spring '10