Datasheet

AD7414/AD7415
Rev. F | Page 15 of 20
TYPICAL TEMPERATURE ERROR GRAPH
TEMPERATURE ACCURACY VS. SUPPLY
Figure 18 shows the typical temperature error plots for one
device with V
DD
at 3.3 V and at 5.5 V.
The temperature accuracy specifications are guaranteed for
voltage supplies of 3 V and 5.5 V only. Figure 16 gives the
typical performance characteristics of a large sample of parts
over the full voltage range of 2.7 V to 5.5 V. Figure 17 gives the
typical performance characteristics of one part over the full
voltage range of 2.7 V to 5.5 V.
02463-018
TEMPERATURE ERROR (°C)
–4
4
–3
–2
–1
0
1
2
3
5.5V
3.3V
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 95 100 110 125
TEMPERATURE (°C)
SUPPLYVOLTAGE(V)
2.7
TEMPERATURE ERROR (°C)
–4
4
5.5
–3
–2
–1
0
1
2
3
3.0
–40°C
+40°C
+85°C
02463-016
Figure 18. Typical Temperature Error @ 3.3 V and 5.5 V
Figure 19 shows a histogram of the temperature error at
ambient temperature (40°C) over approximately 6,000 units.
Figure 19 shows that over 70% of the AD7414/AD7415 devices
tested have a temperature error within ±0.3°C.
Figure 16. Typical Temperature Error vs. Supply for Large Sample of Parts
0
100
200
300
400
500
600
700
800
900
NUMBER OF UNITS
02463-019
–1.08 –0.81 –0.54 –0.27 0 0.27 0.54 0.81 1.08
TEMPERATURE ERROR (°C)
AMBIENT TEMPERATURE = 40°C
3.3 5.0
SUPPLYVOLTAGE(V)
2.7
TEMPERATURE ERROR (°C)
–4
4
5.5
–3
–2
–1
0
1
2
3
–40°C
+40°C
+85°C
02463-017
Figure 19. Ambient Temperature Error @ 3 V
Figure 17. Typical Temperature Error vs. Supply for One Part