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ADS8861: Multiple ADS8861s with REF60xx

Genius 15690 points
Part Number: ADS8861
Other Parts Discussed in Thread: OPA625

Hello,

When using 10 ADS8861s on the same board with REF60xx, can one REF60xx be shared with all 10 ADS8861s?
Or each ADS8861 requires each separated REF60xx?

Regards,
Oba

  • Hello Oba-san,

    Each ADS8861 needs its own reference driver buffer.  You could use 10 REF60xx, but I would suggest using 1 REF50xx for a single system reference voltage, and then provide a buffer for each ADS8861.  

    For the reference buffer, if the DC accuracy is good enough, the OPA625 would work very well.

    Regards,
    Keith Nicholas
    Precision ADC Applications