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For the Sound and Vibration Measurement Hat for Raspberry Pi road test, I'm reviewing Measurement Computing's IEPE Measurement DAQ HAT for Raspberry Pi. In this little breakout post: the analogue front end.
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In a previous post, I checked the hat's components, and found these ICs at the analogue side:
- Input buffer: 2 channel OPA2277U OpAmp.
- Then a THS4531A differential amp per channel.
- ADC: a differential ADS1271 per channel
The hyperlinks point to the datasheets.
The simplified schematic could be this:
