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LM49450: *

Part Number: LM49450

LM49450 上电之后,Vref无输出,并且I2C无法查找到设备,以下是原理图与layout

  • 您好,

    您是否已检测了各供电管脚电压正常?

    您测试了几块板子Vref无输出?是否可以多测试几块以排除焊接问题?

    LM49450 设备地址是 1111101,通信格式如下截图,您是否可以用示波器或逻辑分析仪抓取I2C通信波形以供检查?