The ADC of the MM912F634

[guofeng]

Hello!

I have read the datasheet of the MM912F634, but I did not find the section to describe use the ADC.

if the PTB analog input use 2.5V as reference voltage. How about the VSENSE? The voltage of VSENSE can up to 27V. 

Is there have a method to calculate?

[TomasVaverka · Accepted solution]

Hello Guofeng,

As you can see in the MM912F634 datasheet, the ratio of the VSENSE input divider is 10.8, so at VSENSE = 27V, the measured voltage will be 27V/10.8 = 2.5V and ADR10 = 0xFFC0. At VSENSE = 13.5V, the measured voltage will be 1.25V and ADR10 = 0x7FC0.

Hope it helps. If you have any other questions, please let me know.

Best regards,

Tomas

[guofeng]

Hello Tomas,

Thank you for your answer.

I has found this from the Chapter 3 Electrical Characteristics. Thank you very much!

Best regards,

Guofeng