我想使用ads1248内部的基准源和时钟,按下图连接有没有什么问题?
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你好!
CLK接到数字地上即可实现使用内部基准,上图的时钟源应该是没问题的,可以详见datasheet上的P7的管脚说明;至于基准源的话,建议参考一下datasheet上的P29的” INTERNAL VOLTAGE REFERENCE”,见下图,至于VREFOUT和VREFCOM之间的电容值的权衡选择可以参看table 10: