The supply voltage range of the INA4230 is 1.7V to 5.5V. The ability to operate at 1.7V enables the device to be used in 1.8V supply rails. Even with a supply voltage of 1.7V, the device can monitor currents on voltage rails as high as 48V. This wide common-mode range of operation allows the device to be used in many applications where the common-mode voltage exceeds the supply voltage rail.