Midterm Exam 2 Solutions 08

I electrons ii holes iii both electrons and holes

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: i) electrons, (ii) holes), (iii) both electrons and holes. (choose one) [3pts] Holes c) If the power supply voltage is 2V and ground is 0V, what bias voltage is usually connected to the body (substrate) of the transistor? Why? [3pts] 2V We want to ensure the n-type side of the pn junctions is at the highest potential to keep them reverse biased. Otherwise, we’ll get substrate current (undesirable). d) Assume the threshold voltage of the PMOS is VTH = -0.4V. If VS = 2V, VD = 0V, find the gate voltages for which the PMOS is (i) cut-off, (ii) in between saturation and triode regions. [3pts] 1.6 V (i) (ii) 0.4 V e) If a PMOS and an NMOS have exactly the same dimension (W, L, and oxide thickness), which transistor has higher g m ? W...
View Full Document

Ask a homework question - tutors are online