Re: Pressure Measurement type pressure sensors
- From: Spehro Pefhany <speffSNIP@xxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 30 Jan 2006 15:34:03 -0500
On 30 Jan 2006 12:13:52 -0800, the renowned "merco"
<d.mercanti@xxxxxxxxx> wrote:
>thanks,
>
>and what about interfacing it with a PIC16f88 with 10bit AD converter
>with 2.048 vref, and 3.3V VCC supply ?
Shouldn't be any major problems. You'll need an amplifier, as I
suggested.
Note that the output is ratiometric to the supply voltage for the
sensor, so it may not make sense to use two references, as that may
unnecessarily add two error terms. If you run the sensor from your
3.3V supply rather than the regulation 10V, you'll get 1/3 the output
voltage (about 13mV F.S.), which is not too bad with high performance
parts, given the 1%-ish accuracy of the part. Less self-heating as
well.
Best regards,
Spehro Pefhany
--
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- From: Spehro Pefhany
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