Hi everyone,
I’m working on a ratiometric measurement setup using the AD7124-8 ADC and a Wheatstone bridge–based pressure sensor MPM281PT (such as piezoresistive pressure transducer).
I’m looking for an example or detailed explanation covering the following:
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Wiring diagram for connecting the full-bridge pressure sensor to the AD7124-8 in a ratiometric configuration.
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Recommended ADC configuration (differential input mode, gain, reference selection, filter settings, and sample rate).
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How to convert the ADC output code to actual pressure values (in bar, kPa, or psi) — including the formula and any calibration steps.
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Example code (C/C++ or Python) to read data from the AD7124-8 and compute the pressure based on the ratiometric principle.
My goal is to achieve a stable and precise pressure measurement by using the excitation voltage as the reference, thereby compensating for supply voltage variations.
If anyone has shared schematics, register configurations, or sample code for a similar ratiometric setup, I’d really appreciate your guidance!
Thanks in advance!