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LMP91000 LMP91050 如何做到抗空间电磁干扰

Other Parts Discussed in Thread: OPA2241, LMP91000

我们公司做CO  红外CO2 这两种传感器时,在做射频电磁场辐射抗扰度试验(严酷等级3级:场强10V/m,频率20MHz~1GHz,调制信号AM、80%、1kHz,驻留时间3s),低频段80-200Mhz 受干扰变化乱跳, 以前用的是 ADA4505 放大CO    OPA2241放大红外CO2  ,都受干扰。  现 如果改居 LMP91000  LMP51050 如何才能不受干扰, 气体检测部分有金属外壳,但非密闭。