ADG707 unused inputs

What is the correct thing to do with unused differential inputs on the ADG707 mux ?

thanks,

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  • kschoen,

      I would tie the inputs to a voltage source that is guaranteed to always be between the rails or to

    one of the rails.  To be on the safe side, put a resistor in series with the line to Vdd or Vss.

    The abs max section on page 5 says to limit the current through an input pin to < 30 mA,

    I'd keep it a little bit less, say 10 mA.  So 5V/10 mA = 500 ohm.  So you could use 1k to

    ground and go to all the unused inputs.

    Harry

Reply
  • kschoen,

      I would tie the inputs to a voltage source that is guaranteed to always be between the rails or to

    one of the rails.  To be on the safe side, put a resistor in series with the line to Vdd or Vss.

    The abs max section on page 5 says to limit the current through an input pin to < 30 mA,

    I'd keep it a little bit less, say 10 mA.  So 5V/10 mA = 500 ohm.  So you could use 1k to

    ground and go to all the unused inputs.

    Harry

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