Hi @LSL 罗 and welcome to the Community :),
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In the STM32F401 series, do the ADC_IN16 channel and the ADC_IN18 channel share the same channel?
If I understand correctly, if you refer to the RM0368 and precisely Figure 38. Temperature sensor and VREFINT channel block diagram, you can conclude that you can output Vsense on both channel ADC1_IN16 and ADC1_IN18.
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Thank you
Kaouthar
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