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ADS8671 Datasheet(PDF) 37 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) 37 Page - Texas Instruments

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ACQ
CONV
RESET
Power-Up
C
O
N
VST
/C
S
(R
isi
ng
Ed
ge
)
En
d
of
C
on
ve
rsi
on
R
ST
(R
isi
ng
Ed
ge
)
RST (Falling Edge)
R
ST
(F
alli
ng
Ed
ge
)
Configuration Data: Device 3
Configuration Data: Device 2
SCLK
{SDO-0}1
{SDI}2
{D31}1
CONVST/CS
{SDO}HOST
{SDI}1
B64
B65
B95
B94
B63
B62
{D1}1
B95
B94
B32
B33
B31
B30
B65
B64
B63
B62
B0
B1
B33
B32
{D30}1
{D0}1
{SDO-0}2
{SDI}3
{D31}2
{D1}2
B95
B94
B65
B64
{D30}2
{D0}2
{D31}1
{D30}1
{D1}1
{D0}1
{SDO-0}3
{SDI}HOST
{D31}3
{D1}3
{D30}3
{D0}3
{D31}2
{D30}2
{D1}2
{D0}2
{D31}1
{D30}1
{D1}1
{D0}1
1
2
31
32
33
34
63
64
65
66
95
96
Configuration Data: Device 1
Configuration Data: Device 2
Configuration Data: Device 3
Output Data: Device 3
Output Data: Device 2
Output Data: Device 1
37
ADS8671, ADS8675
www.ti.com
SBAS779 – DECEMBER 2016
Product Folder Links: ADS8671 ADS8675
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Copyright © 2016, Texas Instruments Incorporated
Device Functional Modes (continued)
A typical timing diagram for three devices connected in a daisy-chain topology and using the SPI-00-S protocol is
shown in Figure 72.
Figure 72. Three Devices in Daisy-Chain Mode Timing Diagram
7.4.2 Device Operational Modes
As shown in Figure 73, the device supports three functional states: RESET, ACQ, and CONV. The device state
is determined by the status of the CONVST/CS and RST control signals provided by the host controller.
Figure 73. Device Functional States


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