Multiple ADS131M02-Q1 devices can be arranged to capture all signals simultaneously. The same clock must be provided to all devices and the SYNC/RESET pins must be strobed simultaneously at least one time to align the sample periods internally between devices. The phase settings of each device can be changed uniquely, but the host must take care to record which channel in the group of devices represents the zero phase.

The devices can also share the SPI bus where only the CS pins for each device are unique. Each device can be addressed sequentially by asserting CS for the device that the host wishes to communicate with. The DOUT pin remains high impedance when the CS pin is high, allowing the DOUT lines to be shared between devices as long as no two devices sharing the bus simultaneously have their CS pins low. Figure 9-3 shows multiple devices configured for simultaneous data acquisition while sharing the SPI bus.

Monitoring the DRDY output of only one of the devices is sufficient because all devices convert simultaneously.

Figure 9-3 Multiple Device Configuration