Datasheet

AD5381 Data Sheet
Rev. D | Page 20 of 40
03732-021
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 = 5V
V
REF
= 2.5V
T
A
= 25°C
Figure 21. AD5381-5 Output Amplifier Source and Sink Capability
03732-022
I
SOURCE
/I
SINK
(mA)
2.000 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 22. Headroom at Rails vs. Source/Sink Current
03732-023
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 23. REFOUT Noise Spectral Density
03732-024
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 24. AD5381-3 Output Amplifier Source and Sink Capability
03732-025
SAMPLE NUMBER
5500 100 150 200 250 30050 350 400 500450
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 25. Adjacent Channel DAC-to-DAC Crosstalk
AV
DD
= DV
DD
= 5V
V
REF
= 2.5V
T
A
= 25°C
EXITS SOFT PD
TO MIDSCALE
03732-026
AVDD = DVDD = 5V
T
A
= 25°C
DAC LOADED WITH MIDSCALE
EXTERNAL REFERENCE
Y AXIS = 5µV/DIV
X AXIS = 100ms/DIV
Figure 26. 0.1 Hz to 10 Hz Noise Plot