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关于ADS1198进行心电监测放大信号的问题?

Other Parts Discussed in Thread: ADS1198, ADS1298

心电信号一般最大的峰值不超过3mV,ADS1198的前级GPA最大放大倍数为12,经过放到后心电信号直接就送给了内部AD,这样16位的AD,最多只能利用上低10位,高6位全0,我以前设计心电监测时,前级PGA放大6被,后面再加一个100倍的后级放大,再送到AD中,对ADS1198的这个结构很疑惑,请解答,谢谢

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