SBAS905C November 2019 – July 2020 ADS8686S
PRODUCTION DATA
The ADS8686S supports serial (SPI) interface communication using the CS, SCLK, SDI, SDOA, and SDOB signals. To read the data using the serial interface, tie the SER/BYTE/ PAR pin high and the DB9/BYTESEL pin low when the device is released from a full reset.
The ADS8686S supports data capture in serial interface mode using two output pins, SDOA and SDOB. Data can be read back from the ADS8686S by using serial 1-wire or serial 2-wire mode.
In serial 2-wire mode, conversion results from channel AIN_0A to channel AIN_7A appear on SDOA, and conversion results from channel AIN_0B to channel AIN_7B appear on SDOB. In serial 1-wire mode, conversion results from channel AIN_0B to channel AIN_7B are interlaced with the conversion results from channel AIN_0A to channel AIN_7A. To achieve the maximum throughput, serial 2-wire mode must be used.
Tie the DB4/ SER1W pin to logic high to configure the device to operate in serial 2-wire mode. Tie the DB4/ SER1W pin to logic low to configure the device to operate in serial 1-wire mode. Serial 1-wire or 2-wire mode is configured when the ADS8686S is released from a full reset.