Datasheet

AD5382 Data Sheet
Rev. C | Page 20 of 40
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I
SOURCE
/I
SINK
(mA)
2.00
0 0.25 0.50 0.75 1.00 1.25
1.50
1.75
ERROR VOLTAGE (V)
–
0.20
0.20
0.10
0.05
0.15
0
–0.05
–
0.10
–0.15
AVDD = 5V
V
REF
= 2.5V
T
A
= 25
°C
ERROR AT ZERO SINKING CURRENT
(VDD–
VOUT) AT FULL-SCALE SOURCING CURRENT
Figure 21. Headroom at Rails vs. Source/Sink Current
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FREQUENCY (Hz)
100k100 1k 10k
OUTPUT NOISE (nV/ Hz)
0
600
500
400
300
200
100
AVDD = 5V
T
A
= 25°C
REFOUT DECOUPLED
WITH 100nF CAPACITOR
REFOUT = 2.5V
REFOUT = 1.25V
Figure 22 REFOUT Noise Spectral Density
03733-024
CURRENT (mA)
–40 –20 –10 –5 –2 0 2 5 10 20 –40
VOUT (V)
–1
6
4
3
2
5
1
0
ZERO SCALE
1/4 SCALE
MIDSCALE
3/4 SCALE
FULL SCALE
AVDD = DVDD = 3V
V
REF
= 1.25V
T
A
= 25°C
Figure 23. AD5382-3 Output Amplifier Source and Sink Capability
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SAMPLE NUMBER
550
0 100 150 200 250 30050 350 400 500
450
AMPLITUDE (V)
2.449
2.456
2.455
2.454
2.453
2.452
2.451
2.450
AVDD = DVDD = 5V
V
REF
= 2.5V
T
A
= 25°C
14ns/SAMPLE NUMBER
Figure 24. Adjacent Channel DAC-to-DAC Crosstalk
AV
DD
= DV
DD
= 5V
V
REF
= 2.5V
T
A
= 25
°
C
EXITS SOFT PD
TO MIDSCALE
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AVDD = DVDD = 5V
T
A
= 25°C
DAC LOADED WITH MIDSCALE
EXTERNAL REFERENCE
Y AXIS = 5µ
V/DIV
X AXIS = 100ms/DIV
Figure 25. 0.1 Hz to 10 Hz Noise Plot