AMC1311做电压采样后次级是否可以通过10m左右的双绞线或网线传输后进入MCU?
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您好,新年快乐。
5m的双绞线的话,信号速率是多大? 因为cable长度和信号速率是成反比的,速率越大,cable越短。
如果信号频率只在Khz的话,我认为5m的话信号完整性的问题不大,因为双绞线相当于容性负载,建议是在AMC1311 输出端串联20ohm电阻进行隔离,进行测试看下信号完整性,或者是在cable终端加上100ohm匹配电阻,但此时需要考虑gain 的损失,所以还是要实际测试下。