JAJSIU8B June 2015 – April 2020 ADS131E08S
The number of bits in the data output depends on the number of channels and the number of bits per channel. The data format for each channel data are twos complement and MSB first.
For the ADS131E08S with 32-kSPS and 64-kSPS data rates, the number of data bits is: 24 status bits + 16 bits per channel × 8 channels = 152 bits.
For all other data rates, the number of data bits is: 24 status bits + 24 bits per channel × 8 channels = 216 bits.
When channels are powered down using the user register setting, the corresponding channel output is set to 0. However, the sequence of channel outputs remains the same.
The ADS131E08S also provides a multiple data readback feature. Data can be read out multiple times by simply providing more SCLKs, in which case the MSB data byte repeats after reading the last byte. The DAISY_IN bit in the CONFIG1 register must be set to 1 for multiple read backs.