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ADG467 - what is the minimal bipolar supply voltage ?

allein
on Oct 23, 2018

Hi,

We aim to protect the ADC inputs using an ADG467. We currently are using +/-3.6V to supply it, targetting to clip the input signals to +/-2.1V.

Initial tests look OK, but I'd like to have a cross-checking from you.

Thanks in advance

  • +1
    •  Analog Employees 
    on Oct 23, 2018 5:52 PM over 2 years ago

    Hi Allein,

    For this channel protector we have a minimum bipolar supply range rating of +/-4.5V in Table1.  You going down to +/-3.6V is below this so performance would not be guaranteed. You will see a large variation in Ron versus input voltage when using low supplies, see Figure 6 in the datasheet.  It is difficult to say all the effects at such a low voltage supply. 

    Regards,
    Eric.