The INA4235 device supports two input ranges for the shunt voltage measurements for each channel. The supported full scale differential input across the IN+ and IN– pins can be either ±81.92mV or ±20.48mV depending on the RANGE field in the CONFIG2 Register register. The range for the bus voltage measurement at the IN- pins is from 0V to 52.42V, but is limited by process ratings to the maximum operating voltage.

Table 8-4 provides a description of full scale voltage on shunt and bus voltage measurements, along with the associated resolution.

The device shunt voltage and bus voltage measurements are read through the Shunt Voltage registers and Bus Voltage registers, respectively. The digital output in shunt voltage and bus voltage registers is 16 bits. The shunt voltage measurement can be positive or negative due to bidirectional currents in the system; therefore the data value in shunt voltage register can be positive or negative. The bus voltage register data value is always positive. The output data can be directly converted into voltage by multiplying the digital value by the respective resolution size.

Furthermore, the device provides the flexibility to report calculated current in Amperes, power in Watts, as described in Current and Power Calculations.