Datasheet

AD5678
Rev. C | Page 14 of 28
CURRENT (mA)
ERROR VOLTAGE (V)
0.50
0.40
–0.50
–0.40
–0.30
–0.20
–0.10
0
0.10
0.20
0.30
–10 –8 –6 –4 –2 0 2 4 861
05299-023
0
V
DD
= 3V
V
REFOUT
= 1.25V
V
DD
= 5V
V
REFOUT
= 2.5V
DAC LOADED WITH
ZERO-SCALE
SINKING CURRENT
DAC LOADED WITH
FULL-SCALE
SOURCING CURRENT
Figure 23. Headroom at Rails vs. Source and Sink
CURRENT (mA)
V
OUT
(V)
6.00
5.00
4.00
3.00
2.00
1.00
–1.00
0
–30 –20 –10 0 10 20 30
05299-024
V
DD
= 5V
V
REFOUT
= 2.5V
T
A
= 25°C
ZERO SCALE
FULL SCALE
MIDSCALE
1/4 SCALE
3/4 SCALE
Figure 24. AD5678-2 Source and Sink Capability
CURRENT (mA)
V
OUT
(V)
4.00
–1.00
0
1.00
2.00
3.00
–30 –20 –10 0 10 20 30
05299-025
V
DD
= 3V
V
REFOUT
= 1.25V
T
A
= 25°C
ZERO SCALE
CODE
I
DD
(mA)
2.0
0
05299-026
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
512 10512 20512 30512 40512 50512 60512
T
A
= 25°C
V
DD
= V
REF
= 3V
V
DD
= V
REF
= 5V
Figure 26. Supply Current vs. Code
TEMPERATURE (°C)
I
DD
(mA)
1.6
0
0.2
1.0
1.2
1.4
0.4
0.6
0.8
–40 –20 0 20 40 60 80 100
05299-027
V
DD
= V
REFIN
= 3.6V
V
DD
= V
REFIN
= 5.5V
Figure 27. Supply Current vs. Temperature
V
DD
(V)
I
DD
(
m
A)
1.6
0
0.2
1.0
1.2
1.4
0.4
0.6
0.8
2.7
05299-028
3.2 4.23.7 5.24.7
T
A
=25°C
FULL SCALE
MIDSCALE
1/4 SCALE
3/4 SCALE
Figure 25. AD5678-1 Source and Sink Capability
Figure 28. Supply Current vs. Supply Voltage