AnsweredAssumed Answered

AD7124-8 SPI level shift using ADG3300

Question asked by SteveRodeen on May 15, 2018
Latest reply on May 29, 2018 by SteveRodeen


we need to interface the AD7124-8 with an ATMEGA32U4 (5V mcu) through SPI. We are conisdering the attached shifting diagram:

Does anybody have any insight on:

1. Will we have any issues with the fact that we are not using any pull-ups particularly to the CS pin? (I think the ADG3300 pins will not be able to handle lowervalue pull-ups - like less than 50k)


2. Is there a recommended buffer we should use to overcome the pull-up issue?


3. Is there an alternate arrangement we should consider?


Thanks in advance!