The analog ground of STM32G473CBUx

licunxu · ‎2025-09-17

Hi ST expert

I'm ready to use STM32G473CBUx now. According to the datasheet, the STM32G473CBUx does not have an analog ground VSSA, only a ground VSS. I have questions:

1. The analog input of the internal ADC/DAC is referenced to the chip's VSS, or has STM32G473CBUx internally partitioned an analog ground?

2. When I design the schematic, is the analog power VDDA referenced to VSS?

TDK · ‎2025-09-17

1) VSSA and VSS are bonded to the exposed pad.

2) VDDA is referenced to VSSA/VSS which is the exposed pad.

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