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尊敬的 Pawel：
VREF 电容器将连接在 VREF+上、并连接到 VREF-和 GND。 确保在 VREF-引脚上具有良好的实心接地连接、并尝试限制外部高开关噪声。 实心接地连接将有助于提高 ADC 或其他模拟性能。
此致、 Luke
