SBAS760C March 2018 – January 2019 ADS1260 , ADS1261
PRODUCTION DATA.
Refer to the PDF data sheet for device specific package drawings
The sinc filter is composed of two stages: a variable-decimation sinc5 filter, followed by a variable-decimation, variable-order sinc filter. The first stage filters and down-samples the modulator data to yield data rates of 40000 SPS, 25600 SPS, 19200 SPS, and 14400 SPS. These data rates bypass the second stage and as a result have a sinc5 characteristic filter response. The second stage receives data from the first stage at a fixed rate of 14400 SPS. The data rate is reduced to the range 7200 SPS to 2.5 SPS, with programmable orders of sinc.
The data rate is programmed by the DR[4:0] bits of register MODE0. The filter mode is programmed by the FILTER[2:0] bits of register MODE0 (see Table 32).