ADS1131 Evaluation Module


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The ADS1131REF is a circuit board that is designed to feature the ADS1131 18-bit delta-sigma, precision low noise, analog-to digital converter. This board contains the entire circuitry and user interface needed for a weigh-scale digitizer. It is suitable for the general evaluation of the ADS1131 device. The board operates from +5VDC and +3.3VDC, these supplies are generated by two onboard regulators U1 and U2. A microcontroller, the MSP430F449, is used to supply the memory required to operate an LCD controller, hardware SPI™ UART interfaces, and a multiplier, used to perform the many firmware multiplications.


  • USB connection for firmware updates and remote control
  • Power is applied by either a 9 V battery or wall plug 9 V adapter
  • Connections for load cells and other voltage sources
  • Designed for very low power consumption
  • Eight-digit starburst LCD readout
Precision ADCs (<=10MSPS)
ADS1131 18-Bit, 80SPS, 1-Ch Delta-Sigma ADC w/ Powerdown Switch for Resistive Bridge Sensors & Weigh Scales

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Evaluation board

ADS1131REF — ADS1131 Evaluation Module

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Support software

ADS1X3XREF-SW — Software for ADS1x3xREF

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Technical documentation

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Type Title Date
* User guide ADS1x31REF User Guide (Rev. A) Aug. 10, 2011
Certificate ADS1131REF EU Declaration of Conformity (DoC) Jan. 02, 2019
Data sheet 18-Bit ADC for Bridge Sensors datasheet (Rev. C) Oct. 09, 2013

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