Happy new year all!
I'm wondering how to correctly use the reference pin on an INA128 Instrumentation Amplifier. Is there a way to use this pin to eliminate negative voltages (i.e. do a voltage shift)?
Thanks again.
Answer
The reference pin is exactly for level shifting the output. Note that it is best to use a low impedance source for this.An op amp as a unity gain buffer or other configuration should ideally drive this pin.
For decoupling take a look at the typical application circuit in the datasheet. It recommends a 0.1uF capacitor. Perhaps an extra 10uF capacitor would also be good.
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