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SM72445 I2C comunication

Ignacio Bevacqua101791
Prodigy 80 points
Other Parts Discussed in Thread: SM72445

Hello, i'm using the SM72445 in my circuit and i have the next question:

-If i build the circuit that apears into the datasheet, using the A0, A2, A4 and A6 pins to configurate the IC, may i don't use the I2C?? can i build exactly the same circuit from the datasheet? because i want a simple circuit without uC.

I'll wait for the answer, thank you very much.

Ignacio.

  • 0
    TI__Intellectual 1775 points

    Hi Ignacio,

    Absolutely, the SM72445 does not need I2C communication to function. I2C communication capability is only present for increased convenience.

    Florent

  • 0 in reply to Florent Boico
    Prodigy 155 points

    I have a question about the ratio of resistor devider at AVIN pin and AVOUT pin, is there any rule here? In datasheet (page 9) of SM72445 says that:

    AVIN is an A/D input to sense the input voltage of the SM72445. A resistor divider can be used to scale max
    voltage to about 4V, which is 80% of the full scale of the A/D input

     I don't understand that,can you explain more clearly for me? 

    Thanks