JAJSG16 August 2018 PGA305
PRODUCTION DATA.
The sensor voltage-supply block of the PGA305 device supplies power to the resistive-bridge sensor. Use the BRG_CTRL bits in the BRG_CTRL register to configure the sensor supply in the PGA305 device to a 2.5-V, 2-V, or 1.25-V nominal output supply. These three output supply options can accommodate bridge sense elements with different resistor values. This nominal supply is ratiometric to the accurate reference as shown in Figure 3.
The sensor drive includes a switch. This switch can be used to turn off power to the sense element.