AD5380_15 datasheet(21/40 Pages) AD

21 / 40 page

Data Sheet

AD5380

Figure 21. AD5380-5 Output Amplifier Source and Sink Capability

Figure 22. Headroom at Rails vs. Source/Sink Current

Figure 23. REFOUT Noise Spectral Density

Figure 24. AD5380-3 Output Amplifier Source and Sink Capability

Figure 25. Adjacent Channel DAC-to-DAC Crosstalk

Figure 26. 0.1 Hz to 10 Hz Noise Plot

CURRENT (mA)

–40

–20

–10

–5

–2

–1

ZERO SCALE

1/4 SCALE

MIDSCALE

3/4 SCALE

FULL SCALE

AVDD = DVDD = 5V

VREF = 2.5V

TA = 25°C

ISOURCE/ISINK (mA)

2.00

0.25

0.50

0.75

1.00

1.25

1.50

1.75

–0.20

0.20

0.10

0.05

0.15

–0.05

–0.10

–0.15

AVDD = 5V

VREF = 2.5V

TA = 25°C

ERROR AT ZERO SINKING CURRENT

(VDD–VOUT) AT FULL-SCALE SOURCING CURRENT

FREQUENCY (Hz)

100k

100

10k

600

500

400

300

200

100

AVDD = 5V

TA = 25°C

REFOUT DECOUPLED

WITH 100nF CAPACITOR

REFOUT = 2.5V

REFOUT = 1.25V

CURRENT (mA)

–40

–20

–10

–5

–2

–40

–1

ZERO SCALE

1/4 SCALE

MIDSCALE

3/4 SCALE

FULL SCALE

AVDD = DVDD = 3V

VREF = 1.25V

TA = 25°C

SAMPLE NUMBER

550

100

150

200

250

300

350

400

500

450

2.449

2.456

2.455

2.454

2.453

2.452

2.451

2.450

AVDD = DVDD = 5V

VREF = 2.5V

TA = 25°C

14ns/SAMPLE NUMBER

AVDD = DVDD = 5V

VREF = 2.5V

TA = 25°C

EXITS SOFT PD

TO MIDSCALE

AVDD = DVDD = 5V

TA = 25°C

DAC LOADED WITH MIDSCALE

EXTERNAL REFERENCE

Y AXIS = 5

µV/DIV

X AXIS = 100ms/DIV

Rev. D | Page 21 of 40

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