The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Design >> Analog Design >> vt (Threshold Voltage) dependence on W, L of MOS
https://designers-guide.org/forum/YaBB.pl?num=1067504814

Message started by ram on Oct 30^th, 2003, 1:06am

Title: vt (Threshold Voltage) dependence on W, L of MOS
Post by ram on Oct 30^th, 2003, 1:06am

Hi,

Does Vt of a MOS transistor dependent on W and L? If yes what relation??

If any website has this information please let me know.

Thanks and Regards
ram

Title: Re: vt (Threshold Voltage) dependence on W, L of M
Post by Paul on Oct 30^th, 2003, 1:32am

Yes, there is. Check in a good text book on MOS devices, e.g

Y.Tsividis, Operation and Modeling of The MOS Transistor

Paul

Title: Re: vt (Threshold Voltage) dependence on W, L of M
Post by ram on Oct 30^th, 2003, 3:02am

Thanks for the reply. I will look for that book.

Regards
ram

Title: Re: vt (Threshold Voltage) dependence on W, L of M
Post by skippy on Oct 31^st, 2003, 1:44pm

Another excellent reference is:

Fundamentals of Modern VLSI Devices
Y. Taur, T. H. Ning

Title: Re: vt (Threshold Voltage) dependence on W, L of M
Post by naren on Jun 22^nd, 2004, 11:18am

http://www-inst.eecs.berkeley.edu/~ee130/SP03/lecture.html

Title: Re: vt (Threshold Voltage) dependence on W, L of M
Post by wolf on Jun 30^th, 2004, 2:35am

http://legwww.epfl.ch/ekv/model.html#doc

Title: Re: vt (Threshold Voltage) dependence on W, L of M
Post by raul on Mar 19^th, 2006, 9:24pm

very short channel devices exhibit a decrease in Vt. Some process nodes add special implants to minimize this problem and lower leakage.