AD5666 datasheet(16/28 Pages) AD

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AD5666

Rev. A | Page 16 of 28

SAMPLE

2.5000

2.4950

512

2.4955

2.4960

2.4965

2.4970

2.4975

2.4980

2.4985

2.4990

2.4995

128

192

256

320

384

448

VDD =5V

VREFOUT =2.5V

TA = 25°C

4ns/SAMPLE NUMBER

Figure 30. Analog Crosstalk

SAMPLE

2.4900

2.4855

512

128

192

256

320

384

448

2.4860

2.4865

2.4870

2.4875

2.4880

2.4885

2.4890

2.4895

VDD =5V

VREFOUT =2.5V

TA = 25°C

4ns/SAMPLE NUMBER

Figure 31. DAC-to-DAC Crosstalk

YAXIS = 2

μV/DIV

X AXIS = 4s/DIV

VDD =VREF =5V

TA =25°C

DAC LOADED WITH MIDSCALE

Figure 32. 0.1 Hz to 10 Hz Output Noise Plot, External Reference

5s/DIV

VDD =5V

VREFOUT =2.5V

TA =25°C

DAC LOADED WITH MIDSCALE

Figure 33. 0.1 Hz to 10 Hz Output Noise Plot, Internal Reference

4s/DIV

VDD =3V

VREFOUT = 1.25V

TA =25°C

DAC LOADED WITH MIDSCALE

Figure 34. 0.1 Hz to 10 Hz Output Noise Plot, Internal Reference

FREQUENCY (Hz)

800

100

200

300

400

500

600

700

100

10000

1000

100000

1000000

VDD =3V

VREFOUT =1.25V

VDD =5V

VREFOUT =2.5V

TA =25°C

MIDSCALE LOADED

Figure 35. Noise Spectral Density, Internal Reference

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