INA2128U datasheet by Texas Instruments

INA2128U Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the input pins?
  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.
• How do I calculate the gain of the amplifier?
  The gain of the amplifier can be calculated using the formula: Gain = (49.4kΩ / Rgain) + 1, where Rgain is the gain resistor value.
• What is the purpose of the REF pin?
  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.
• Can I use the INA2128U for high-frequency applications?
  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.
• How do I reduce noise and interference in my circuit?
  To reduce noise and interference, use proper PCB layout techniques, add bypass capacitors, and use shielding or guard rings around the input pins.