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关于用OPA861做窄脉冲电压峰值保持电路的问题,求指导

Other Parts Discussed in Thread: OPA861, OPA860

用跨导运放OPA861做窄脉冲峰值采集,ADA4817作为电压缓冲器,

我用Multisim仿真能出来结果,但实物PCB调试怎么都出不了结果,是参数有问题吗,做毕业设计,跪求大佬解答,谢谢