[SI-LIST] Re: Where could I find the Hspice model of varactor?
- From: "Steven M. Waldstein" <swldstn@xxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Fri, 12 Mar 2004 00:07:14 -0500
Yiren,
Are you really refering to on-die decoupling that uses a
NMOS in an NWELL? I know this is what TSMC refers to as a
varactor.
This is actually a depletion MOSFET. I know TSMC
has device models for these in there released HSPICE files.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of steve weir
Sent: Thursday, March 11, 2004 8:55 PM
To: cyr_1976@xxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Where could I find the Hspice model of varactor?
Do you really want to use a varactor as a decoupling capacitor??? The
capacitance of a varactor is typically in the 2-470pF region. That is not
going to make much of a decoupling capacitor. I think On-semi has models.
Steve
At 01:21 AM 3/12/2004 +0000, Yiran Chen wrote:
>I need such kind of model to implement a decoupling capacitance in
>my design.
>
>Thanks.
>
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