按datasheet里面的原理图,DAC8831后面接一个放大器,请问这个放大器的作用是什么?DAC8831和放大器之间需要有输出/输入电阻吗?直接接就可以吗?
另外Vref-S ,Vref-F, AGNDS,AGNDF这四个引脚,具体怎么接?
按原理图的接法是把Vref-S ,Vref-F,接到一起了,如果不接到一起应该怎么接?
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