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TMAG5170-Q1: Sensitvity Error, C Driver, bits being pushed with every read-out, A1 version availability

Franz Schellhase
Expert 3605 points
Part Number: TMAG5170-Q1
Other Parts Discussed in Thread: TMAG5273, , TMAG5170

Hi Team,

Can you comment on the following questions regarding TMAG5170-Q1 as well as TMAG5273?

  • Sensitivity error: Is this error always of the same amount (systematic error) when the exact same chip is used for multiple measurements and is only varying from chip to chip? This would mean it can be calibrated out by the customer 
  • Software: Are there C drivers available for each device?
  • Measurement: How many bits are being pushed out of the interface with each measurement?
  • Version: When will version A1 of TMAG5273 be available?

Thank you,

Franz

  • 0
    TI__Expert 7495 points

    Hi Franz,

    At a given temperature, the sensitivity error should be around the same on a device.  However, please note that the sensitivity would also drift across temperature. The sensitivity drift spec in the datasheet provides information on how much the sensitivity could drift across temperature. Both of the sensitivity error at room temperature and the sensitivity drift can be calibrated out.

    We do not have a code example for the TMAG5273 or the TMAG5170; however, we may look into this in the future.  If you can provide more info on what type of code example you are looking for and your application, we can take this feedback.

    Additionally, these devices use a 12-bit ADC for measurement; however, there is an internal averaging feature on the device that could enable adding an additional 4-bits of LSB data.  This internal averaging selection is done by configuring the CONV_AVG register bits. 

    Regards,

    Mekre