ADS8881数据手册47页，基准端电容使用单个10uF电容，避免使用额外的小电容是因为高采样率时电容之间会有影响，电容之间是如何相互影响的？
A single, 10-μF, X7R-grade, 0805-size, ceramic capacitor with at least a 10-V rating is recommended for good performance over the rated temperature range.
Avoid using additional lower value capacitors because the interactions between multiple capacitors may affect the ADC performance at higher sampling rates.
