AD569 데이터 시트보기 (PDF) - Analog Devices

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AD569

16-Bit Monotonic Voltage Output D/A Converter

Analog Devices 

AD569

Figure 9. MSB Resistor Divider

Figures 11, 12, and 13 show reference configurations for various

output ranges. As shown in Figure 11, the pin-programmable

AD588 can be connected to provides tracking ± 5 V outputs

with 1-3ppm/°C temperature stability. Buffer amplifiers are in-

cluded for direct connection to the AD569. The optional gain

and balance adjust trimmers allow bipolar offset and full-scale

errors to be nulled. In Figure 12, the low-cost AD586 provides

Figure 10. Reference Buffer Amplifier Connections

+5 V reference. A dual op amp, the AD712, buffers the refer-

ence input terminals preserving the absolute accuracy of the

AD569. The optional noise-reduction capacitor and gain

adjust trimmer allow further elimination of errors. The low-

cost AD584 offers 2.5 V, 5 V, 7.5 V, and 10 V options and

can be connected for ± 5 V tracking outputs as shown in Figure

13. Again, an AD712 is used to buffer the reference input

terminals.

Figure 11. Ultralow Drift ±5 V Tracking Reference

Figure 12. Low-Cost ±5 V Reference

–8–

REV. A

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