Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

w/L ratio for cmos inverter

Status
Not open for further replies.

vead

Full Member level 5
Joined
Nov 27, 2011
Messages
285
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,298
Location
india
Activity points
3,815
Why is it required that the NMOS and PMOS transistors at the inverter have different W/L ratios?
 

Difference between electrons and holes mobility causes different current gain factor in pmos and nmos so to obtain the same rise/fall time in cmos inverter the W/L ration of pmos should be ~3 times higher.
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top