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OPA552: OPA552使用问题咨询

Part Number: OPA552


目前在使用OPA552时出现以下问题,正端7脚供电48V,1,4,5引脚供电-5V,万用表量测两个供电电压都有,应用为同相端输入负反馈放大6倍,但是在同相端给一个正电压信号时,输出为-4V,分析是-5V到输出端的一个管压降,请问有哪些原因会出现这个问题,请帮忙解答处理下问题,谢谢!