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在单点接地多电源系统中,如何处理TPS62177的PGND及AGND连接?

Other Parts Discussed in Thread: TPS54202, TPS62177, LMX2571

使用一片TPS54202供模拟3.3V电源(锁相环LMX2571及DDS芯片的模拟部分),使用TPS62177供数字3.3V电源(DDS芯片数字部分)。

模拟地与数字地是否应仅在单点连接?

若是,应如何处理TPS62177的PGND与AGND?