Scan rate capability of 48-channel ADC board (ZAD1248PROXR_USB)


If I am using the USB interface with the ZAD1248PROXR_USB, how quickly can I sample and return voltage measurements for all 48 channels? Is the bottleneck at the ADC, analog switch, or serial interface to the USB?

Thank you,

You should be able to sample and return the measurements from a single command roughly every 25ms for 12-bit readings or 20ms for 8-bit readings.

Since you’re reading 48 channels and the board will only return 16 channels worth of readings at a time you’ll need to send 3 commands to read all channels so approximately 60-75 milliseconds per full sample.

The bottleneck is in the serial interface to the board.

Very helpful. Thank you!