May 20, 2014 #1 V 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?
May 20, 2014 #2 Dominik Przyborowski Advanced Member level 4 Joined Jun 6, 2013 Messages 1,210 Helped 504 Reputation 1,013 Reaction score 506 Trophy points 1,393 Location Norway Activity points 9,311 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.
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.
May 23, 2014 #3 yadavvlsi Advanced Member level 3 Joined Nov 19, 2010 Messages 977 Helped 487 Reputation 972 Reaction score 459 Trophy points 1,343 Location Bangalore, India Activity points 6,991 Please check below link: https://evlsi.com/viewtopic.php?f=11&t=8