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ADS1198芯片空载的时候显示各个通道是直波，加上心电模拟仪之后波形就正常了，请问是什么原因，程序和电路都没有问题 我们已经出产品了
y由于 ADC 会从信号源吸收一些电流, 不要用空载/浮空输入来测试 ADC 特性
