SBASAM0A March 2024 – June 2024 ADS127L18
ADVANCE INFORMATION
Optimize ADC performance by selecting two reference voltage ranges: the low-reference range and high-reference range. Program the reference range to match the applied reference voltage, such as 2.5V or 4.096V. The low-reference operating range is 0.5V to 2.75V, and the high-reference operating range is 1V up to the AVDD1 – AVSS power supply limit. For best performance where the ranges overlap, such as reference voltage = 2.5V, use the low-reference range. Program the REF_RNG bit of the GEN_CFG1 register to the appropriate reference voltage range. When the high-reference range is selected, the input range is internally forced to VIN = ±VREF.