AD7414 Analog Devices, Inc., AD7414 Datasheet - Page 15
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AD7414
Manufacturer Part Number
AD7414
Description
?0.5c Accurate, 10-bit Digital Temperature Sensors In Sot-23
Manufacturer
Analog Devices, Inc.
Datasheet
1.AD7414.pdf
(20 pages)
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TEMPERATURE ACCURACY VS. SUPPLY
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.
Figure 16. Typical Temperature Error vs. Supply for Large Sample of Parts
–1
–2
–3
–4
–1
–2
–3
–4
4
3
2
1
0
4
3
2
1
0
Figure 17. Typical Temperature Error vs. Supply for One Part
2.7
2.7
+40°C
–40°C
3.3
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
3.0
–40°C
+85°C
+85°C
5.0
+40°C
5.5
5.5
Rev. E | Page 15 of 20
TYPICAL TEMPERATURE ERROR GRAPH
Figure 18 shows the typical temperature error plots for one
device with 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.
900
800
700
600
500
400
300
200
100
–1
–2
–3
–4
4
3
2
1
0
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 95 100 110 125
–1.08
0
Figure 18. Typical Temperature Error @ 3.3 V and 5.5 V
AMBIENT TEMPERATURE = 40°C
–0.81
DD
Figure 19. Ambient Temperature Error @ 3 V
at 3.3 V and at 5.5 V.
–0.54
TEMPERATURE ERROR (°C)
TEMPERATURE (°C)
–0.27
3.3V
5.5V
0
0.27
AD7414/AD7415
0.54
0.81
1.08