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594

更新时间： 2024-11-26 12:50:43

品牌	Logo	应用领域
德州仪器 - TI		连接器连接器支架 PC
页数	文件大小	规格书
31页	623K
描述
ADS1131REF and ADS1231REF

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594 数据手册

User's Guide

SBAU175A–July 2010–Revised August 2011

ADS1131REF and ADS1231REF

The ADS1131REF and the ADS1231REF are reference designs for delta-sigma analog-to-digital

converters (ADCs). The ADS1131REF contains the ADS1131 18-bit device, while the ADS1231REF

contains the ADS1231 24-bit device. Both systems contain all the circuitry and user interface elements

needed for a weigh-scale digitizer, and are meant as examples of a good design for a basic weigh-scale

system. Each system is also suitable for general evaluation of the respectively installed ADC. Throughout

this document, the term ADS1x31REF is used to refer to the common features and functions for both

systems.

The ADS1x31REF hardware has the following features:

•

ADS1131 ADC for the ADS1131REF and ADS1231 ADC for the ADS1231REF

Connections for load cells or other voltage sources

Low-side excitation switch on the load cell header connector

Ample EMI/RFI suppression between the ADC and rest of design

Eight-digit starburst LCD readout

USB connection for firmware updates and remote control

Designed for very low power consumption

Battery (9V) or wall power

Version 1.0.0 of the firmware includes the following features:

•

Weigh-scale mode with two-point calibration

Complete configuration of the device

Real-time peak-to-peak and RMS noise calculation

Autoranging voltage display

Noise displayed in volts, codes, and bits

Voltage displayed in volts or codes

Adjustable averaging mode

Raw hexadecimal code display

Simple and fast configuration

Parameters saved to internal flash memory

Computer link

Graphical PC software is also provided for histogram display, datalogging, and device control.

We welcome bug reports and suggestions for additional features; please contact the Texas Instruments

Precision Analog Applications Group.

Hyperterm is a trademark of Microsoft Corporation.

Windows is a registered trademark of Microsoft Corporation.

All other trademarks are the property of their respective owners.

SBAU175A–July 2010–Revised August 2011

ADS1131REF and ADS1231REF

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