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.

Register Log in

hspice wrong calculations?

Status
Not open for further replies.
J

jutek

Full Member level 4
Joined
Oct 21, 2005
Messages
211
Helped
6
Reputation
12
Reaction score
1
Trophy points
1,298
Activity points
3,140
hello

I came across one problem during .OP simulation. I am simulating an opamp.

The thing is: i polarize PMOS gate by 0.8V . Source voltage is 1.2274
so Vgs=-0.4724 but in the output file Vgs is calculated as Vgs=-0.4273

What does this different come from?

regards

Luke
 

i think you should check your model with NRD or NRS parameter value, because they stand for the source resistor and drain resistor which will result in small IR drop as you describe.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top