ADS1131REF

ADS1131REF和ADS1231REF ADS1131REF and ADS1231REF

The is a circuit board that is designed to feature the ADS1131 which is 18bit 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 5V DC and 3.3V DC, these supplies are generated by two on board 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.

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USB connection for firmware updates and remote control

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Power is applied by either a 9V battery or wall plug 9V adapter

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Connections for load cells and other voltage sources

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Designed for very low power consumption

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Low side excitation switch on the load cell header connector

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Eight digit starburst LCD readout

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