DAC8562SDSCT Datasheet, PDF (45/58 Pages) Texas Instruments – DUAL 16-/14-/12-BIT, ULTRALOW-GLITCH, LOW-POWER, BUFFERED, VOLTAGE-OUTPUT DAC WITH 2.5-V, 4-PPM/°C INTERNAL REFERENCE IN SMALL 3-MM × 3-MM SON

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DAC8562, DAC8563
DAC8162, DAC8163
DAC7562, DAC7563
SLAS719D – AUGUST 2010 – REVISED AUGUST 2012
Relative Accuracy or Integral Nonlinearity (INL)
Relative accuracy or integral nonlinearity (INL) is defined as the maximum deviation between the real transfer
function and a straight line passing through the endpoints of the ideal DAC transfer function. INL is measured in
LSBs.
Resolution
Generally, the DAC resolution can be expressed in different forms. Specifications such as IEC 60748-4
recognize the numerical, analog, and relative resolution. The numerical resolution is defined as the number of
digits in the chosen numbering system necessary to express the total number of steps of the transfer
characteristic, where a step represents both a digital input code and the corresponding discrete analogue output
value. The most commonly-used definition of resolution provided in data sheets is the numerical resolution
expressed in bits.
Zero-Code Error
The zero-code error is defined as the DAC output voltage, when all 0s are loaded into the DAC register. Zero-
code error is a measure of the difference between actual output voltage and ideal output voltage (0 V). It is
expressed in mV. It is primarily caused by offsets in the output amplifier.
Zero-Code Error Drift
Zero-code error drift is defined as the change in zero-code error with a change in temperature. Zero-code error
drift is expressed in µV/°C.
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