High-precision analog-to-digital conversion circuit based on ADS1278

Abstract

The invention discloses a high-precision analog-to-digital conversion circuit based on ADS1278. The high-precision analog-to-digital conversion circuit comprises eight differential amplification circuits, a reference voltage source circuit and a conversion processing circuit, an ADS1278 chip is adopted in the conversion processing circuit; the reference voltage source circuit provides reference voltage for the ADS1278 chip and the differential amplification circuit; the eight paths of differential amplification circuits correspondingly convert the eight paths of single-ended analog signals into eight paths of differential signals; and the eight paths of differential signals are respectively and correspondingly input to the sampling input end of the ADS1278 chip, and are output after analog-to-digital conversion by the ADS1278 chip. The analog-to-digital conversion circuit is high in conversion precision, simple in interface and good in stability, can realize multi-channel synchronous sampling, can stably operate in a severe environment, and has important engineering practical application value.

Description

technical field [0001] The invention relates to an analog-to-digital conversion circuit, in particular to an ADS1278-based high-precision analog-to-digital conversion circuit. Background technique [0002] With the advent of the digital age, data acquisition technology has been widely used in all walks of life, especially in the fields of disaster monitoring, precision communication, information processing, remote sensing and telemetry, which often require high acquisition accuracy. Therefore, for high-precision data acquisition The study of technology is also becoming more and more important. However, most of the data acquisition modules currently used have relatively low acquisition accuracy and poor stability. Therefore, this method obviously cannot meet the requirements for some systems that require high-precision acquisition. [0003] ADS1278 is a multi-channel 24-bit industrial analog-to-digital converter launched by Texas Instruments. It integrates multiple independe...

AI Technical Summary

Problems solved by technology

However, most of the data acquisition modules currently used have relatively low acquisition accuracy and poor stability. Therefore, for some systems that require high-precision acquisition, this method obviously cannot meet the requirements.

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