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ADS1146 and thermocouple k

Other Parts Discussed in Thread: ADS1146, ADS1118

Hello everybody. I need measure temperature by a k type thermocouple and no understand how can make this whit ADS1146, this parts have an internal temperature sensor I think with this I can make cold junction compensation, but i no see in datasheet an example for this aplication. Please can anyone tell me if he could use for this.

 

thanks

Amid Ale

  • Hi Amid,

    The ADS1146 ambient temperature sensor is typically used for system monitoring purposes where large temperature changes are detected or for calibration purposes where the user would could perform an offset calibration for the device after a large temperature change (10 degrees of temperature change). 

    The ADS1118 device provides an onboard temperature sensor that is optimized to be used for cold junction compensation; it has a typical temperature sensor accuracy of 0.4C at room temperature; which makes this device ideal for thermocouple applications.

    Please see link below,

    http://focus.ti.com/docs/prod/folders/print/ads1118.html

    Thank you and Kind Regards,

    Luis