The maximum voltage that can be applied to the input pins is ±40V, but it's recommended to keep it within the supply voltage range (VCC) to ensure accurate measurements.
The gain of the INA209 is fixed at 20V/V. You can calculate the output voltage by multiplying the input voltage by the gain. For example, if the input voltage is 1V, the output voltage would be 20V.
The REF pin is used to set the reference voltage for the output. It's typically connected to a voltage reference or a voltage divider to set the output voltage range. The output voltage will be centered around the REF pin voltage.
Yes, the INA209 can be used with a single-supply voltage. However, the input common-mode voltage range is limited to VCC - 1.5V to VCC + 0.5V. Make sure to check the input voltage range and adjust the circuit accordingly.
The bandwidth of the INA209 is 2.5MHz. It's suitable for most industrial and automotive applications, but may not be suitable for high-frequency applications.
INA209AIPWG4 datasheet
by Texas Instruments
