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REF5020输出不正常。试了三个样片,PDF基础接法。

Other Parts Discussed in Thread: REF5020
 前些天我申请了REF5020的样片。昨天首次使用,发现不能正常输出。有一个芯片输出随输入电压的变化而变化变化范围大,NR稳定在1.2V左右。还有两个芯片输出(包括NR引脚),通电之后在输入电压不变的情况下输出电压从2.4V左右慢慢降到约0.8V。