ads1220引脚处理

ADS1220我用内部的基准源，不用外部的基准，那么外部的REFP0和REFN0这两个基准引脚一般怎么处理？

官方推荐的是将其悬空即可。

To minimize leakage currents on the analog inputs, leave unused analog and reference inputs floating, or
connect the inputs to mid-supply or to AVDD. AIN3/REFN1 is an exception. Leave the AIN3/REFN1 pin floating
when not used in order to avoid accidently shorting the pin to AVSS through the internal low-side switch.
Connecting unused analog or reference inputs to AVSS is possible as well, but can yield higher leakage currents
than the previously mentioned options.

谢谢