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ads8661通电后内部短路,连续两片都是

Other Parts Discussed in Thread: ADS8661

焊接后我测试了所有引脚通段,没有任何短路。但是通电后一会芯片就发热,有一股烧焦的味道。

我描述一下我的接线 avdd 5v  , dvdd 3.3v , agnd dgnd全部接地

inp 引脚悬空 未接就是为了测试上电后是否正常,sdo接的mcu mosi ,sck 接的sclk, rest接个限流电阻接到dvdd引脚拉高。

mosi引脚接mcu miso, cs引脚通过mcu gpio控制。

我想问这么接没有问题吧?