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INA700: Ambient Temp

Ohad Bonneh
Intellectual 1960 points
Part Number: INA700

Tool/software:

Hi Team, 

I see that the INA700 enables us die temperature measurements, 

is there also a possibility for ambient temp?

best regards.  

  • 0
    Guru 316920 points

    No, there is no mechanism to connect an external temperature sensor.

  • 0 in reply to Clemens Ladisch
    TI__Intellectual 1960 points

    Thanks for your swift response.

    I'd like to verify that we read and calculate the temperature correctly.

    We are using the following formula for the calculation: Temperature_Reading(dec)* 125 m°C/LSB – please confirm.

    The strange thing is that we receive very high temperature after the calculation, like around 500degC.

    Is this coefficient 125 m°C/LSB correct?

  • 0 in reply to Ohad Bonneh
    TI__Mastermind 34130 points

    Hi,

    The die temperature register needs to right shift by 4 bits (the last four bits are all zeros) before converting to degree C. Alternatively you could keep the 15-bit reading but use LSB of 7.8125mC instead.

    The datasheet alluded to this in the example in section 8.1.1. We probably should have made it clearer in other places

    Regards

    Guang