The ADS9813 features a PGA at every analog input channel. The PGA supports single-ended and differential inputs with a bipolar signal swing. Table 6-1 lists the supported analog input ranges. Configure the analog input range independently for each channel with the RANGE_CHx register fields in address 0xC2 and address 0xC3.

Each analog input channel features an antialiasing, low-pass filter (LPF) at the output of the PGA. Table 6-2 lists the various programmable LPF options available in the ADS9813 corresponding to the analog input range. Figure 5-14 and Figure 5-15 illustrate the frequency responses for low-bandwidth and wide-bandwidth LPF configurations. Select the analog input bandwidth for the eight analog input channels with the ANA_BW[7:0] bits in address 0xC0 of register bank 1.