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ADS8671 Datasheet(PDF) 30 Page - Texas Instruments

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Part No. ADS8671
Description  14-Bit, High-Speed, Single-Supply, SAR ADC Data Acquisition System with Programmable, Bipolar Input Ranges
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Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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ADS8671 Datasheet(HTML) 30 Page - Texas Instruments

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Free-Air Temperature (0C)
-40
-7
26
59
92
125
4.09
4.091
4.092
4.093
4.094
4.095
4.096
4.097
4.098
D632
AVDD = 5.25 V
AVDD = 5 V
AVDD = 4.75 V
REFCAP Drift (ppm/ºC)
0
2
4
6
8
10
12
14
16
18
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
D642
Free-Air Temperature (0C)
-40
-7
26
59
92
125
4.09
4.091
4.092
4.093
4.094
4.095
4.096
4.097
4.098
4.099
4.1
D063
AVDD = 5.25 V
AVDD = 5 V
AVDD = 4.75 V
REFCAP Drift (ppm/ºC)
0
4
8
12
16
20
24
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
D064
30
ADS8671, ADS8675
SBAS779 – DECEMBER 2016
www.ti.com
Product Folder Links: ADS8671 ADS8675
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
The performance of the internal buffer output is very stable across the entire operating temperature range of
–40°C to +125°C. Figure 60 (for the PW package) and Figure 62 (for the RUM package) show the variation in
the REFCAP output across temperature for different values of the AVDD supply voltage. The typical specified
value of the reference buffer drift over temperature is 0.5 ppm/°C, as shown in Figure 61 (for the PW package)
and Figure 63 (for the RUM package), and the maximum specified temperature drift is equal to 2 ppm/°C.
Figure 60. Reference Buffer Output (REFCAP) Variation vs
Supply and Temperature (PW Package)
AVDD = 5 V, number of devices = 30, ΔT = –40°C to +125°C
Figure 61. Reference Buffer Temperature Drift Histogram
(PW Package)
Figure 62. Reference Buffer Output (REFCAP) Variation vs
Supply and Temperature (RUM Package)
WQFN (RUM) package, AVDD = 5 V, number of devices = 30,
ΔT = –40°C to +125°C
Figure 63. Reference Buffer Temperature Drift Histogram
(RUM Package)


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