AD7533KP データシートの表示（PDF） - Analog Devices

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AD7533KP

CMOS Low Cost, 10-Bit Multiplying DAC

Analog Devices 

TERMINOLOGY

Relative Accuracy

Relative accuracy or endpoint nonlinearity is a measure of the

maximum deviation from a straight line passing through the

endpoints of the DAC transfer function. It is measured after

adjusting for ideal zero and full scale and is expressed in % of

full-scale range or (sub) multiples of 1 LSB.

Resolution

Value of the LSB. For example, a unipolar converter with n bits

has a resolution of (2–n) (VREF). A bipolar converter of n bits has

a resolution of [2–(n–1)] (VREF). Resolution in no way implies

linearity.

Settling Time

Time required for the output function of the DAC to settle to

within ½ LSB for a given digital input stimulus, that is, 0 to

full scale.

AD7533

Gain Error

Gain error is a measure of the output error between an ideal

DAC and the actual device output. It is measured with all 1s in

the DAC after offset error is adjusted out and is expressed in LSBs.

Gain error is adjustable to zero with an external potentiometer.

Feedthrough Error

Error caused by capacitive coupling from VREF to output with all

switches off.

Output Capacitance

Capacity from IOUT1 and IOUT2 terminals to ground.

Output Leakage Current

Current that appears on IOUT1 terminal with all digital inputs

low or on IOUT2 terminal when all inputs are high.

Rev. C | Page 5 of 12

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