I'm trying to use AD8293G80 to convert pressure sensor's differential voltage output to be used with microcontroller ADC.
I'm using MPX2202 series pressure sensor: http://www.freescale.com/files/sensors/doc/data_sheet/MPX2202.pdf
Supplying both pressure sensor and AD8293G80 with GND & +5V, I have ~2.5V at sensor's output. With difference measuring just a few millivolts (0.1mV/kPa). I need to take this differential, substract 2.5, and amplify it to 0-5V scale for interfacing with ADC. I've hooked up amplifier as per datasheet, but always getting +5v on ADC output pin. I tried leaving REF pin disconnected, or connected to 2.5V (using resistor voltage divider), still same result. When REF connected to GND - I'm getting 0V at output, regardless of pressure.
I've also posted here: http://forum.arduino.cc/index.php?topic=229501.0 for some more context.
Any suggestions as to what I'm not doing right here? Or is it wrong amplifier for my purpose altogether?