DAC1219 datasheet(3/12 Pages) NSC

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Electrical Characteristics Notes

Note 1

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur DC and AC electrical specifications do not apply when operating

the device beyond its specified operating conditions

Note 2

All voltages are measured with respect to GND unless otherwise specified

Note 3

This 500 mW specification applies for all packages The low intrinsic power dissipation of this part (and the fact that there is no way to significantly modify

the power dissipation) removes concern for heat sinking

Note 4

Both IOUT1 and IOUT2 must go to ground or the virtual ground of an operational amplifier The linearity error is degraded by approximately VOSdVREF For

example if VREFe10V thena1mV offset VOS onIOUT1 or IOUT2 will introduce an additional 001% linearity error

Note 5

The unit FSR stands for full-scale range Linearity Error and Power Supply Rejection specs are based on this unit to eliminate dependence on a particular

VREF value to indicate the true performance of the part The Linearity Error specification of the DAC1218 is 0012% of FSR This guarantees that after performing a

zero and full-scale adjustment the plot of the 4096 analog voltage outputs will each be within 0012% c VREF of a straight line which passes through zero and full-

scale The unit ppm of FSR (parts per million of full-scale range) and ppm of FS (parts per million of full-scale) are used for convenience to define specs of very

small percentage values typical of higher accuracy converters 1 ppm of FSReVREF 106 is the conversion factor to provide an actual output voltage quantity For

example the gain error tempco spec of g6 ppm of FS C represents a worst-case full-scale gain error change with temperature from b40 Cto a85 Cof

(6)(VREF 106)(125 C) or g075 (10b3)VREF which is g0075% of VREF

Note 6

To achieve this low feedthrough in the D package the user must ground the metal lid If the lid is left floating the feedthrough is typically 6 mV

Note 7

A 10 nA leakage current with RFbe20k and VREFe10V corresponds to a zero error of (10c10b9c20c103)c100% 10V or 0002% of FS

Note 8

Human body model 100 pF discharged through 15 kX resistor

Note 9

Tested limit for b1 suffix parts applies only at 25 C

Note 10

Typicals are at 25 C and represent the most likely parametric norm

Note 11

Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level)

Note 12

Design limits are guaranteed but not 100% production tested These limits are not used to calculate outgoing quality levels

Typical Performance Characteristics

Digital Input Threshold

vs VCC

Digital Input Threshold

vs Temperature

Gain and Linearity Error

Variation vs Temperature

Gain and Linearity Error

Variation vs Supply Voltage

TLH5691 – 2

DAC1219 Datasheet(PDF) 3 Page - National Semiconductor (TI)

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