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关于REF3133做ARM的VREF

Other Parts Discussed in Thread: REF3133

在REF3133做VREF基准源时经常出现电压不正确(0.1V左右)的情况,希望能帮我排除设计上错误的情况。

  • Hi

       建议先检查如下:

       应用上和LDO一样,输入电压必须比输出电压高出Vdropmax,

       负载需要在其范围内。

       layout上,基准芯片必须选一个较为干净的GND。(模拟GND, 注意数模隔离)