Midterm Exam 2 Solutions 08

Why assume both are long channel devices 3pts the nmos

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: hy? (Assume both are long-channel devices) [3pts] The NMOS will have higher transconductance because electrons have higher mobility than holes and √. Page 7 Problem 4 [20 points]: Cascode Amplifiers 4) Below is a cascode amplifier with mixed MOS and BJT transistors: VCC = 3V VCC = 3V 1 mA 1 mA vOUT vOUT Vb M2 Vb Q2 vin Q1 vin M1 Cascode-A Cascode-B MOS transistor parameters: VTH = 0.5V, μnCox = 200 μA/V2, λ = 0.1V-1, (W/L)1 = (W/L)2 = 10 BJT transistor parameters: IS = 10−17 A, VA = 10 V, and β = 100 a) Find the small-signal parameters of the MOS transistor ( g m , r0 ). [2pts] Since they’re biased identically in each circuit (once again, using the approximation that 1) the MOSFETs will have identical small-signal parameter...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online