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.

Is there any parameter scaling law in mos scaling?

Status
Not open for further replies.

Jeon.S.B

Newbie level 3
Newbie level 3
Joined
Jul 27, 2012
Messages
4
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,306
i mean, Is there any conventional ratio between channel length and parameters like oxide thickness,junction depth and substrate doping?
if so, why?
I want to simulate 0.3um NMOS using silvaco. but i don't know how to determine oxide thickness, junction depth and substrate doping.
please help.
 

Oxide thickness, junction depth and substrate doping is usually defined by the IC manufacturer you use. Usually constants dependent on the capabilities of their equipment.

- - - Updated - - -

Scaling you say...

mimetex.cgi


mimetex.cgi


mimetex.cgi


mimetex.cgi


mimetex.cgi


mimetex.cgi


mimetex.cgi


mimetex.cgi


Hope it helps.

- - - Updated - - -

Thus...

mimetex.cgi


mimetex.cgi


mimetex.cgi
Power dissipation.

Power density remains unchanged.

In the case of constant voltage scaling (Keeping VDD and Vt0 the same)

Parameters W, L, tox and xj is scaled down by S.

NA and ND is increased by S2

Then,

mimetex.cgi


mimetex.cgi


mimetex.cgi
Power dissipation.

mimetex.cgi
Power density.

- - - Updated - - -

Constant field scaling: The first set of scaling rules exist to keep the same field conditions in the transistor.

Constant voltage scaling: The second set of scaling rules exist to keep the same voltage levels in the transistor.
 
Last edited:

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top