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关于ADS1247能否同时采集热电阻和热电偶的问题

Other Parts Discussed in Thread: ADS1247

请问各位,我现在想用ADS1247采集热电阻和热电偶信号,热电阻是三线制的,与热电偶的接口是复用的,不知道ADS1247能否实现。请各位不吝赐教

  • 从手册看, ADS1247 功能

    • Temperature Measurement
    – RTDs, Thermocouples, and Thermistors
    • Pressure Measurement
    • Industrial Process Control

    应该是可以的, 看你怎么分配信号, 避免影响

  • 你好,单独采集是可以的,但是我就是不知道怎么用一片ADS1247既可以采集热电阻,又可以采集热电偶。因为我看datasheet上面三线制采集热电阻的时候有一根线都是接在参考电压输入引脚的,但是我这个精度要求又比较高,所以得用外部参考电压输入。所以就不知道引脚如何分配了。不知你是否有好的方法,望赐教