最近在画LMX2571的板子,发现在demo板的芯片电源端是除了一个退藕电容下地,还串联了两个0欧电阻,有的是10欧或者4.7欧,问什么,个人觉得换做一个或者磁珠,或者直接不要两个0欧行不行?虽说频率很高。
感谢TI工作人员解答!
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Those resistors are used to provide flexibility to add filtering on Vcc so as to reduce spurs.