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ADS8671 Datasheet(PDF) 52 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) 52 Page - Texas Instruments

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ADS8671, ADS8675
SBAS779 – DECEMBER 2016
www.ti.com
Product Folder Links: ADS8671 ADS8675
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
7.6.1.6 RANGE_SEL_REG Register (address = 14h)
This register controls the configuration of the internal reference and input voltage ranges for the converter.
Figure 86. RANGE_SEL_REG Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
R-0000h
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
Reser
ved
INTREF_ DIS
Reserved
RANGE_SEL[3:0]
R-00h
R-0b
R/W-0b
R-00b
R/W-<0000>b
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset; -0, -1 = Condition after application reset;
LEGEND: -<0>, -<1> = Condition after power-on reset
Address for bits 7-0 = 14h
Address for bits 15-8 = 15h
Address for bits 23-16 = 16h
Address for bits 31-24 = 17h
Table 16. RANGE_SEL_REG Register Field Descriptions
Bit
Field
Type
Reset
Description
31-16
Reserved
R
0000h
Reserved. Reads return 0000h.
15-8
Reserved
R
00h
Reserved. Reads return 00h.
7
Reserved
R
0b
Reserved. Reads return 0b.
6
INTREF_DIS
R/W
0b
Control to disable the ADC internal reference.
0b = Internal reference is enabled
1b = Internal reference is disabled
5-4
Reserved
R
00b
Reserved. Reads return 00b.
3-0
RANGE_SEL[3:0]
R/W
0000b
These bits comprise the 4-bit register that selects the nine input ranges of
the ADC.
0000b = ±3 × VREF
0001b = ±2.5 × VREF
0010b = ±1.5 × VREF
0011b = ±1.25 × VREF
0100b = ±0.625 × VREF
1000b = 3 × VREF
1001b = 2.5 × VREF
1010b = 1.5 × VREF
1011b = 1.25 × VREF


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