Datasheet

Data Sheet AD5628/AD5648/AD5668
Rev. G | Page 15 of 32
0.4
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
–10–8–6–4–20246810
ERROR VOLTAGE (V)
SOURCE/SINK CURRENT (mA)
V
DD
= 5V, INT REF = 2.5V
V
DD
= 3V, INT REF = 1.25V
T
A
= 25°C
05302-130
Figure 31. Headroom at Rails vs. Source and Sink
6
5
4
3
2
1
0
–1
–0.03 –0.02 –0.01 0 0.01 0.02 0.03
V
OUT
(V)
CURRENT (A)
ZERO SCALE
FULL SCALE
MIDSCALE
1/4 SCALE
3/4 SCALE
V
DD
= 5V
INT REF = 2.5V
T
A
= 25°C
05302-131
Figure 32. AD5668-2/AD5668-3 Source and Sink Capability
4.0
–1.0
–0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
–0.03 –0.02 –0.01 0 0.01 0.02 0.03
V
OUT
(V)
CURRENT (A)
ZERO SCALE
FULL SCALE
MIDSCALE
1/4 SCALE
3/4 SCALE
V
DD
= 3V
INT REF = 1.25V
T
A
= 25°C
05302-132
Figure 33. AD5668-1 Source and Sink Capability
1.8
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
0 10k 20k 30k 40k 50k 60k
I
DD
(mA)
DIGITAL CODES (Decimal)
T
A
= 25°C
05302-133
V
DD
= 5V
V
DD
= 3V
Figure 34. Supply Current vs. Code
2.0
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
–40 –25 –10 5 20 35 50 65 80 95 110 125
I
DD
(mA)
TEMPERATURE (°C)
05302-134
V
DD
= 3.6V
V
DD
= 5.5V
Figure 35. Supply Current vs. Temperature
1.48
1.34
1.36
1.38
1.40
1.42
1.44
1.46
2.7 5.55.14.74.33.93.53.1
I
DD
(mA)
V
DD
(V)
T
A
= 25°C
05302-135
Figure 36. Supply Current vs. Supply Voltage