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THS4131两个引脚之间冒火花,不知如何解决

Other Parts Discussed in Thread: THS4131, ADS8472

芯片:THS4131;输入交流信号幅值0—±4V;

供电:±12V;

用途:THS4131驱动ADS8472;

现象:

1、±12V供电芯片输出电压正常;

2、Pin5和Pin6之间在上电瞬间会有火花,上电10次基本上有7次都会看到火花;

3、Pin5和Pin6之间在上电之后不是一直有火花,而是间隔性有火花,间隔周期随机;

4、检查PCB的相关引脚也没发现问题;