SBOSAD1 May 2024 INA791B
ADVANCE INFORMATION
System calibration is common for many industrial applications to eliminate initial component and system-level errors that can be present. A system-level calibration reduces the initial accuracy requirement for many of the individual components because the errors associated with these components are effectively eliminated through the calibration procedure. This calibration enables precise measurements at the temperature in which the system is calibrated. As the system temperature changes because of external ambient changes or self heating, measurement errors are reintroduced. Without accurate temperature compensation used in addition to the initial adjustment, the calibration procedure is not effective. The user must account for temperature-induced changes. The built-in programmed temperature compensation in the INA791x (including both the integrated current-sensing resistor and current-sensing amplifier) keep the device measurement accurate, even when the temperature changes throughout the specified temperature range of the device.