[SI-LIST] Re: [inquiry] A question about the temperature keyword of ibis model
- From: steve weir <weirsi@xxxxxxxxxx>
- To: Benny Yan <yanzhi@xxxxxxxxxxx>
- Date: Mon, 22 Mar 2010 03:42:34 -0700
There is no such thing as: your typical die temperature. As a matter of
application some devices are pushed much harder than others. Many die
operate at or above 100C.
Steve.
Benny Yan wrote:
> I would ask whether 50 degree is your typical die temperature, no matter
> under what temperature your device will be typically (ambient temperature)
> used.
> If the typical die temperature is 50 degree, use it as the typical
> temperature in IBIS, as well as during IBIS modeling.
> 25 degree for typical corner defined in IBIS spec is not absolute.
> -----Original Message-----
> From: gezi [mailto:gezi.zhang@xxxxxxxxxx]
> Sent: Monday, March 22, 2010 4:54 PM
> To: Benny Yan; si-list@xxxxxxxxxxxxx
> Subject: 答复: [SI-LIST] Re: [inquiry] A question about the temperature keyword
> of ibis model
>
> Hi Benny,
>
> If we generate ibis model from spice simulation, the device is typically
> used
>
> under 25 degree Celsius. But we shall do the spice simulation and mark the
> ibis's
>
> temperature using real die temperature. But I find the typical temperature
> in
>
> the ibis model is 25 degree Celsius. What's wrong?
>
>
>
> -----邮件原件-----
> 发件人: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> 代表 Benny Yan
> 发送时间: 2010年3月22日 16:39
> 收件人: gezi; si-list@xxxxxxxxxxxxx
> 主题: [SI-LIST] Re: [inquiry] A question about the temperature keyword of
> ibis model
>
> 50 degree Celsius.
> [Temperature Range] Usage Rules: List the actual die temperatures (not
> percentages) in the typ,
> min, max format. "NA" is allowed for min
> and max only.
>
> Regards
>
> Benny
>
> -----Original Message-----
> From: gezi [mailto:gezi.zhang@xxxxxxxxxx]
> Sent: Monday, March 22, 2010 4:30 PM
> To: Benny Yan; si-list@xxxxxxxxxxxxx
> Subject: 答复: [SI-LIST] Re: [inquiry] A question about the temperature
> keyword of ibis model
>
> Hi Yanzhi,
>
> What temperture should I mark in the ibis model? 25 degree or 50 degree?
>
> -----邮件原件-----
> 发件人: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
> 代表 Benny Yan
> 发送时间: 2010年3月22日 16:22
> 收件人: gezi; si-list@xxxxxxxxxxxxx
> 主题: [SI-LIST] Re: [inquiry] A question about the temperature keyword of
> ibis model
>
> Gezi,
>
> IBIS spec defines the temperature at die, so you should use 50 degree in
> this case.
>
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
> Behalf Of gezi
> Sent: Monday, March 22, 2010 2:57 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] [inquiry] A question about the temperature keyword of
> ibis model
>
> I would like to ask a question about the temperature keyword of ibis
> model. Is the temperature ambient temperature or die temperature? For
> example,
>
>
>
> A device is used under room temperature 25 degree. Under this temperature,
> the die temperature is properly 50 degree. I would generate IBIS data from
> spice simulation.
>
>
>
> Will I use 50 degree to generate the ibis data?
>
>
>
>
>
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--
Steve Weir
IPBLOX, LLC
150 N. Center St. #211
Reno, NV 89501
www.ipblox.com
(775) 299-4236 Business
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