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Resistors on static digital inputs of AD7609

Question asked by sirluke on Oct 10, 2012
Latest reply on Oct 25, 2012 by KarenNE

On the sample circuit pictured on the datasheet of AD7609 at page 24, I see resistors in series with the static digital input pins, like RANGE, STDBY, REF SELECT. Why are they needed since there is no state change and thus no ringing or impedance matching to be done?

What are the possible problems without those?