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AD7747 minimum I2C Frequency

Question asked by macduff on Nov 11, 2013
Latest reply on Jan 15, 2014 by macduff

I've been working with the AD7747 CAPDAC interfacing with a board design of my own and have been very satisfied.  I'm evaluating using a very low I2C frequency and have found that the AD7747 quits talking if the frequency is lower than about 54kHz.  Is this just how the chip works or is there likely a problem on the microcontroller I2C that I am using.

 

Thanks!

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