DAC60501: The definition of full-scale error

Hi,

In order to understand Full scale error , we need to consider both Gain error and Offset Error. Please see the below diagram.

Offset Error:

The output voltage when the digital input code is set to give an ideal output voltage of 0 V (end point calculation). For the best fitting line calculation the offset error is the offset of the best fitting reference line related to the ideal transfer line.

Gain Error:

It is a measure of the span error of the DAC. It is the deviation in slope of the actual DAC transfer characteristic from the ideal transfer characteristics.

Full Scale Error:

It is the error of the full scale output voltage (maximum input code) from the ideal full scale output voltage (end point full scale error). So Full Scale error includes both both gain error and offset error.

Mathematically,

Full Scale Error =  Gain Error + Offset Error

Hope this helps.

Regard,

AK