dV
OS
– INPUT-REFERRED OFFSET DRIFT – µV
600
MEAN
± 2 SIGMA
400
dV
OS
– INPUT-REFERRED OFFSET DRIFT – µV
400
MEAN
± 2 SIGMA
300
200
200
0
-200
-400
100
0
-100
-600
4.4
4.6
4.8
5.0
5.2
5.4
5.6
-200
4.4
4.6
4.8
5.0
5.2
5.4
5.6
V
DD1
– INPUT SUPPLY VOLTAGE – V
V
DD2
– OUTPUT SUPPLY VOLTAGE – V
Figure 3. Input-Referred Offset Drift
vs. V
DD1
(V
DD2
= 5 V).
Figure 4. Input-Referred Offset Drift
vs. V
DD2
(V
DD1
= 5 V).
1.5
+5 V
+5 V
+15 V
1.0
MEAN
± 2 SIGMA
0.1 µF
1
V
IN
2
3
0.01 µF
4
HCPL-7800
8
7
6
5
0.1 µF
10 K
+
-
10 K
AD624CD
GAIN = 1
V
OUT
dG – GAIN DRIFT– %
0.1 µF
0.5
0
-0.5
0.33 µF
0.33 µF
0.1 µF
-1.0
-40
-20
0
20
40
60
80
100
-15 V
T
A
– TEMPERATURE – °C
Figure 5. Gain and Nonlinearity Test Circuit.
Figure 6. Gain Drift vs. Temperature.
0.5
0.5
MEAN
± 2 SIGMA
0.3
MEAN
± 2 SIGMA
ERROR – % OF FULL-SCALE
0
dG – GAIN DRIFT– %
dG – GAIN DRIFT– %
0.4
0.2
0.3
0.1
-0.5
0.2
0
-1.0
0.1
-0.1
-1.5
MEAN
± 2 SIGMA
-2.0
4.4
4.6
4.8
5.0
5.2
5.4
5.6
0
-0.1
4.4
4.6
4.8
5.0
5.2
5.4
5.6
-0.2
-0.3
-0.2
-0.1
0
0.1
0.2
V
DD1
– INPUT SUPPLY VOLTAGE – V
V
DD2
– OUTPUT SUPPLY VOLTAGE – V
V
IN
– INPUT VOLTAGE – V
Figure 7. Gain Drift vs.
V
DD1
(V
DD2
= 5 V).
Figure 8. Gain Drift vs.
V
DD2
(V
DD1
= 5 V).
Figure 9. 200 mV Nonlinearity Error
Plot.
1-225
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
