semicon temp specs?

Aug 25, 2005 26 Replies
L

Iterativeend skrev:

It is spec'ed for -40C storage so I'd think nothing mechanical breaks at that temperature. The datasheet says the transciever is based on another chip and the

1Mbit version is spec'ed to work at -40C

I guess it could just be that at -40C the clock frequency for the

4Mbit data rate will be so far of it doesn't work?

-Lasse

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J

*Generally* CMOS works BETTER/FASTER when cold.

...Jim Thompson

| James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
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L

Jim Thompson skrev:

I know :) But if one end of the RF link is at -40C the other end at +85C and the link only work if the ends are with in say, +/-30ppm ...

-Lasse

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J

Makes a helluva poor design ;-)

...Jim Thompson

| James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC\'s and Discrete Systems | manus | | Phoenix, Arizona Voice:(480)460-2350 | | | E-mail Address at Website Fax:(480)460-2142 | Brass Rat | | http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
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R

That would seem like a function of whatever frequency- determining/sensitive elements, not particularly of the silicon.

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L

Jim Thompson skrev:

maybe, the bluetooth spec is +/-20ppm that doesn't leave much for the tempco of the xtal

-Lasse

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