AD Converters with low voltage external reference.

[Byron Smith]

I don't know of any converters using a reference that low.  But, if 8 bits
of resolution is enough, perhaps reading the low byte of a 12bit a/d
referenced to 1V would work.  I know Microchip makes some PICs with 12 bit
a/d, but I've yet to find any data on their accuracy vs. ref voltage.

Just some thoughts,

Byron


> -----Original Message-----
> From:	Jörgen Karlsson [SMTP:jurg at pp.sbbs.se]
> Sent:	Thursday, June 15, 2000 7:23 PM
> To:	DIY_EFI Mailinglist
> Subject:	AD Converters with low voltage external reference.
> 
> Does anyone know of a adc that can use an external reference with very low
> voltage, I have found units that can be used with a 1V reference but I
> would
> like to get down to 50-60mV. I am trying to limit the part count needed
> for
> type K thermocouples.
> 
> Jörgen Karlsson
> 
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