请问下，
我想在ECG信号模拟采集前端加一个电压跟随器，来提高输入阻抗，有没有合适的电压跟随器？如LM310.
ECG信号幅度在0.5~3mV左右，频率在几赫兹到几十赫兹，不知道电压跟随器是否有这么高的灵敏度.
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