Global Standards for the Microelectronics Industry
zero scale (of an analog-to-digital converter [a digital-to-analog converter] with true zero)
A term used to refer a characteristic to the step whose nominal midstep [step] value equals zero.
NOTE 1 The subscript for the letter symbol of a characteristic at zero scale is "ZS".
NOTE 2 In place of a letter symbol, the abbreviation "ZS" is commonly used.
References:
JESD99B, 5/07