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MSP430FR2311烟感设备

Other Parts Discussed in Thread: MSP430FR2311

采用MSP430FR2311研发一款烟感设备,前端为光电检测方案,发现设备在强光照射下ADC的数值有明显的增大,如正常情况下为50,强光照射下会增大到200,采用其他品牌MCU就没有这种跳变,请问是不是在采用2311内部运放的时候,外部需要进行阻容匹配,是否有参考电路,多谢!