[time-nuts] Tbolt temperature sensor

[Ulrich Bangert]

Mark,

in this case the DS1620 may perhaps be exchanged against a DS18S20 which
definitely supports the high res reading. Bought chips & programmed for
them at the end of last year.

Best regards
Ulrich Bangert

> -----Ursprüngliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Mark Sims
> Gesendet: Samstag, 7. Februar 2009 05:02
> An: time-nuts at febo.com
> Betreff: [time-nuts] Tbolt temperature sensor
> 
> 
> 
> I got some info back from Maxim on the DS1620.  The rev D 
> chips use the dual oscillator design described in the data 
> sheet.  The rev E chips are based on a temperature 
> compensated bandgap design.   
> 
> The high resolution read routine is based upon reading 
> counter values and residuals...  it's beginning to look like 
> the newer chips don't do it...  I've got more questions to 
> ask Maxim... 
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