JAJSPF5 April 2024 ADS9813
ADVANCE INFORMATION
The ADS9813 has a precision, low-drift voltage reference internal to the device. For best performance, the internal reference noise is filtered (as shown in Figure 6-6) by connecting a 10µF ceramic bypass capacitor to the REFIO pin. As shown in Figure 6-7, an external reference is also connected at the REFIO pin. When using an external reference, disable the internal reference voltage by writing PD_REF = 1b in address 0xC1 of register bank 1.