Hi,
my reading of the ADS1282 datasheet is that pin 4 DOUT is always an active output, i.e. there is no way to tri-state it because the ADS1282 has no CS pin. Still, the IBIS model in the sbam093.zip file describes pin 4 as HiZ capable. I'm designing a device containing 3 ADS1282 converters - would be nice to have them sharing the same bus... So is there really a way to disable DOUT, is the IBIS model of pin 4 wrong, or am I missing something?
Thanks!
Michele
Hi Michele,
Welcome to the TI E2E Forums!
You are correct, the DOUT pin on the ADS1282 is always an active output, as if /CS was an internal connection always pulled LOW. I believe the IBIS model was created from a template of a typical SPI device with /CS. Therefore, it included a HiZ state that is unused for the ADS1282.
Connecting multiple ADS1282 devices together will require multiple buses, though you can share CLK, SCLK, SYNC and RESET pins between devices.
Regards,
Chris
