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ADS1292R: 关于呼吸测量隔直电容的选择

Part Number: ADS1292R


如下图,理论上C3和C4选择2.2nF,载波会被衰减很多,如果选择更大的电容似乎可以保证载波幅度更大。从而让呼吸波动的幅度更大,更容易被检测,关于这个电容的选择2.2nF有何种考虑。