Datasheet

REV.
AD7564
–10–
2.0
0.0
1.4
0.6
0.2
0.4
0.4
0.2
1.2
0.8
1.0
1.4
1.6
1.8
1.21.00.80.6
|V
REF
– V
BIAS
| – Volts
INL – LSBs
V
DD
= +3.3V
T
A
= +25°C
OP AMP = AD820
V
REF
= +1.23V (AD589)
Figure 9. Integral Nonlinearity Error vs. V
REF
(Biased Mode)
2.0
0.0
1.4
0.6
0.2
0.4
0.4
0.2
1.2
0.8
1.0
1.4
1.6
1.8
1.21.00.80.6
|V
REF
– V
BIAS
| – Volts
V
DD
= +5V
T
A
= +25°C
OP AMP = AD820
V
BIAS
= +1.23V (AD589)
INL – LSBs
Figure 10. Integral Nonlinearity Error vs. V
REF
(Biased Mode)
0.2
–0.5
4095
–0.2
–0.4
1024
–0.3
0
0.1
–0.1
0.0
30722048
CODE – LSBs
LINEARITY ERROR – LSBs
V
DD
= +3.3V
T
A
= +25°C
V
BIAS
= 1.23V
V
REF
= 0V
Figure 11. All Codes Linearity Plot (Biased Mode)
2.0
0.0
1.4
0.6
0.2
0.4
0.4
0.2
1.2
0.8
1.0
1.4
1.6
1.8
1.21.00.80.6
|V
REF
– V
BIAS
| – Volts
DNL – LSBs
V
DD
= +3.3V
T
A
= +25°C
OP AMP = AD820
V
REF
= +1.23V (AD589)
Figure 12. Differential Nonlinearity Error vs. V
REF
(Biased Mode)
2.0
0.0
1.4
0.6
0.2
0.4
0.4
0.2
1.2
0.8
1.0
1.4
1.6
1.8
1.21.00.80.6
|V
REF
– V
BIAS
| – Volts
DNL – LSBs
V
DD
= +5V
T
A
= +25°C
OP AMP = AD820
V
BIAS
= +1.23V (AD589)
Figure 13. Differential Nonlinearity Error vs. V
REF
(Biased Mode)
LINEARITY ERROR – LSBs
0.4
–0.1
0.2
0.0
0.1
0.3
409510240 30722048
CODE – LSBs
NORMAL MODE
V
DD
= +5V
T
A
= +25°C
V
REF
= 10V
Figure 14. All Codes Linearity Plot (Normal Mode)
B