Datasheet

AD7280A
Rev. 0 | Page 12 of 48
266826672666266526642663266226612660
CODE
10,000
8000
6000
4000
2000
0
8870
167
956
7
NUMBER OF OCCURRENCES
09435-108
Figure 10. Histogram of Codes for 10,000 Samples,
Even Cell Voltage Channels
10,000
8000
6000
4000
2000
0
29522951295029492948
236
2947
9072
2946
692
29452943 29442942
NUMBER OF OCCURRENCES
CODE
09435-109
Figure 11. Histogram of Codes for 10,000 Samples,
Auxiliary Channels
–40 –20 0 20 40 60 80 100
V
REF
VOLTAGE (V)
TEMPERATURE (°C)
09435-212
2.496
2.497
2.498
2.499
2.500
2.501
2.502
2.503
2.504
2.505
2.506
2.507
2.508
V
DD
= 8V
V
DD
= 10V
V
DD
= 16.8V
V
DD
= 22.5V
V
DD
= 29.9V
Figure 12. V
REF
vs. Temperature for Different Supply Voltages
2.496
2.498
2.500
2.502
2.504
2.506
2.508
–40 –20 0 20 40 60 80 100
V
REF
VOLTAGE (V)
TEMPERATURE (°C)
PART 1
PART 4
PART 7
PART 10
PART 2
PART 5
PART 8
PART 11
PART 3
PART 6
PART 9
PART 12
09435-111
Figure 13. V
REF
vs. Temperature for Different Parts
–40 –20 0 20 40 60 80 100
TOTAL UNADJUSTED ERROR (mV)
TEMPERATURE (°C)
09435-214
–4.5
–3.0
–1.5
0
1.5
3.0
4.5
6.0
7.5
V
DD
= 8V
V
DD
= 10V
V
DD
= 16.8V
V
DD
= 22.5V
V
DD
= 29.9V
Figure 14. Total Unadjusted Error for Even Cell Voltage Channels (Absolute
Value) vs. Temperature for Different Supply Voltages
–40 –20 0 20 40 60 80 100
TOTAL UNADJUSTED ERROR (mV)
TEMPERATURE (°C)
09435-215
–4.5
–3.0
–1.5
0
1.5
3.0
4.5
6.0
7.5
V
DD
= 8V
V
DD
= 10V
V
DD
= 16.8V
V
DD
= 22.5V
V
DD
= 29.9V
Figure 15. Total Unadjusted Error for Odd Cell Voltage Channels (Absolute
Value) vs. Temperature for Different Supply Voltages