The maximum voltage that can be applied to the input pins is ±40V, but it's recommended to keep it within ±20V to ensure accurate measurements.
The gain of the amplifier can be calculated using the formula: Gain = (49.4kΩ / Rgain) + 1, where Rgain is the gain resistor value.
The REF pin is used to set the reference voltage for the amplifier. It can be connected to a voltage reference or a resistive divider to set the output voltage range.
The INA2128U is suitable for high-frequency applications up to 1.5MHz. However, the bandwidth may be limited by the gain and the input capacitance.
To reduce noise and interference, use proper PCB layout techniques, add bypass capacitors, and use shielding or guard rings around the input pins.
INA2128U datasheet
by Texas Instruments
