The INA280 gain error is < 0.5% at room temperature for all gain options, with a maximum drift of 20ppm/°C over the full temperature range of –40 °C to +125 °C. The INA280 is available in multiple gain options of 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V, which the system designer should select based on their desired signal-to-noise ratio and other system requirements.

The INA280 closed-loop gain is set by a precision, low-drift internal resistor network. Even though the ratio of these resistors are well matched, the absolute value of these reisistors may vary significantly. TI does not recommend adding additional resistance around the INA280 to change the effective gain because of this variation, however. The typical values of the gain resistors are described in Table 7-1.