Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

ADS8671 Datasheet(PDF) 29 Page - Texas Instruments

Click here to check the latest version.
Part No. ADS8671
Description  14-Bit, High-Speed, Single-Supply, SAR ADC Data Acquisition System with Programmable, Bipolar Input Ranges
Download  72 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo 

ADS8671 Datasheet(HTML) 29 Page - Texas Instruments

Zoom Inzoom in Zoom Outzoom out
 29 / 72 page
background image
ADC
4.096 VREF
REFCAP
REFIO
AGND
10 PF
REFGND
CREF
AVDD
REF5040
(See the device datasheet for
a detailed pin configuration.)
AVDD
OUT
1 PF
RANGE_SEL_REG[6] = 1
(INTREF_DIS)
29
ADS8671, ADS8675
www.ti.com
SBAS779 – DECEMBER 2016
Product Folder Links: ADS8671 ADS8675
Submit Documentation Feedback
Copyright © 2016, Texas Instruments Incorporated
7.3.7.2 External Reference
For applications that require a better reference voltage or a common reference voltage for multiple devices, the
device provides a provision to use an external reference source along with an internal buffer to drive the ADC
reference pin. In order to select the external reference mode, the INTREF_DIS bit of the RANGE_SEL_REG
register must be programmed to logic 1. In this mode, an external 4.096-V reference must be applied at the
REFIO pin, which functions as an input. Any low-power, low-drift, or small-size external reference can be used in
this mode because the internal buffer is optimally designed to handle the dynamic loading on the REFCAP pin
that is internally connected to the ADC reference input. The output of the external reference must be
appropriately filtered to minimize the resulting effect of the reference noise on system performance. A typical
connection diagram for this mode is shown in Figure 59.
Figure 59. Device Connections for Using an External 4.096-V Reference
The output of the internal reference buffer appears at the REFCAP pin. A minimum capacitance of 10 µF must
be placed between the REFCAP and REFGND pins. Place another capacitor of 1 µF as close to the REFCAP
pin as possible for decoupling high-frequency signals. Do not use the internal buffer to drive external ac or dc
loads because of the limited current output capability of this buffer.


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn