A low-side power switch with low on-resistance connected between REFN0 and AVSS-SW is integrated in the devices. This power switch can be used to reduce system power consumption in resistive bridge sensor applications by powering down the bridge circuit between conversions. When the PSW bit in the excitation current register 1 (06h) is set to 1, the switch closes. The switch automatically opens when the POWERDOWN command is issued. The switch is opened by setting the PSW bit to 0. By default, the switch is open. Connect AVSS-SW to AVSS.