VDAC Output at Zero

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Anonymous
Not applicable

Can someone explain why the VDAC output is not zero volts when it is set to zero?

   

 

   

My test showed a voltage of 1.4mV when I set the VDAC to zero. Is this simply a voltage offset orginating from a buffer used in the component? I'm not sure of the exact design of the VDAC, but I do know that it is based on the IDAC.

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