On Dec 5, 2007 12:17 AM, Gregg C Levine <[EMAIL PROTECTED]>
wrote:
> Hello!
> Of course it would have made more sense to state that fact. These are the
> MPX family of sensors first made by Motorola during the beginning of the
> MEMS ideas, now made by Freescale, in fact this pair is the MPX12D type.
>
>
>From the datasheet: http://www.ortodoxism.ro/datasheets/motorola/MPX12DP.pdf
Full scale: 0-70mV with an offset.
Now from my table: http://owfs.org/index.php?page=voltage-measurement
The DS2438 has a Vsens (vis) range +-250mV
The DS2761 has a range +- 64mV
Both also have supply voltage and temperature, both are pretty inexpensive.
The DS2761 allows a software bias setting that might be useful.
The DS2761 also stores a "cumulative current" which could be used for
average pressure. It is also more accurate (higher resolution with the
smaller voltage range).
Paul Alfille
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