Adjusting and calibrating out offset and gain error in a precision DAC

David Fry, Strategic Applications Manager, Maxim Integrated Products
EETimes (3/23/2012 4:05 PM EDT)

All digital/analog converter (DAC) systems experience gain and offset error. These are analog errors caused by many factors in the DAC and in the external signal path. Gain and offset error should, therefore, be specified in the data sheet for a precision DAC.

This application note describes these DAC errors and their sources, and then describes methods for calibrating out that error in both the analog and digital domains.

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