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    D1s的ALDO和HPLDO是内置的吗?还是需要外部LDO?

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    • YuzukiTsuru
      柚木 鉉 LV 9 last edited by

      在EVB电路图里看到D1s内置了ALDO和HPLDO

      43d66a78-275f-44f7-812c-270ad5359abc-image.png

      数据手册里看到是内置的,但是外面没有看到相关的输出引脚。是AVCC,HPVCC自己就是输出吗?

      f9dca7c4-e729-4b3c-8553-0e4effc32412-image.png

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      • tigger
        tigger LV 7 last edited by

        看一下D1的手册,如果D1上面有的话,而D1s上面没有,说明可能在D1s封装到里面去了。

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        • xiaowenge
          DOT小文哥 LV 8 last edited by xiaowenge

          这两个电源都为内部LDO,AVCC和HPVCC分别是ALDO和HPLDO的输出,即AVCC/HPVCC不需要外部另外供电,但由于这两个电源属于专用电源,所以不能用于其它外设
          ps. AVCC的精度为3%

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          • YuzukiTsuru
            柚木 鉉 LV 9 @xiaowenge last edited by

            @xiaowenge 好的

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            • mangogeek
              mangogeek LV 8 last edited by

              ALDO是持续有1.8V供电,HPLDO是只有播放音乐时才会输出1.8V。这两个引脚只需外部去耦即可。

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