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ADS1292R引脚冒烟

Other Parts Discussed in Thread: ADS1292R

我焊接了一个1292的外围电路模块,然后通过32单片机开发板的3.3V排阵给该模块供电: 
我都焊接了三四块了,都是上电后冒烟,1292模块还包括一个稳压电路和逻辑电平转换电路,我焊接一个模块测试一个模块,最后焊接的1292,焊接完后就是有问题了,焊接1292R之前,都没事,指示灯也正常亮,焊接完1292R后指示等就闪烁,这是什么原因