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Modeling >> Semiconductor Devices >> accuracy of IO device models
https://designers-guide.org/forum/YaBB.pl?num=1382517644

Message started by aaron_do on Oct 23^rd, 2013, 1:40am

Title: accuracy of IO device models
Post by aaron_do on Oct 23^rd, 2013, 1:40am

Hi all,

I want to design an opamp, and I found that I can get better overall performance using my IO devices. However, I'm wondering whether these device models are going to be accurate since they're not primarily used for opamp design. I'm using TSMC40nm. Any information is appreciated.

thanks,
Aaron

Title: Re: accuracy of IO device models
Post by Geoffrey_Coram on Nov 5^th, 2013, 8:36am

You really have to ask the foundry that one -- what measurements did they do to validate the models? Can they show you the fits?

Title: Re: accuracy of IO device models
Post by aaron_do on Nov 5^th, 2013, 4:46pm

Hi,

thanks for the reply. So I guess its a 50-50 then. I was just thinking there would be a typical scenario...

Aaron

Title: Re: accuracy of IO device models
Post by danmiso on Dec 12^th, 2013, 9:10pm

I don't know much about TSMC 40 nm, but I have used I/O devices in two-digit nm processes for various analog circuits such as such as LDOs. I haven't seen any issues with the models. I'm sure fabs will get a lot of complaints from customers if they compromise accuracy of the I/O device models thinking that they will be only used for digital I/O's.