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https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/702306/lmzm33603-agnd-and-pgnd-pin-chip-manuals-are-internally-connected-what-if-the-external-connections-are-connected-together
AGND 和 PGND 引脚芯片手册在内部连接。 如果外部连接连接在一起会怎样？
如果 AGND 和 PGND 也从外部连接、LMZM33603仍将按预期工作。 建议 将 AGND 与 PGND 保持独立、 以消除接地回路、并使电源 接地开关噪声远离 IC 中更敏感的内部模拟电路。
