This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMAG5170-Q1: Quiescent Current for Operating Range

Part Number: TMAG5170-Q1


Hey Team,

Is quiescent current a function of the linear magnetic range selected? (e.g. is using the device within +/-25mT range going to demand more Q-current relative to configuring the device to be used at +/- 50 or 100mT)

Do we have a table or illustration that can give a better picture of these differences in Iq? We are wondering for operating conditions of 5ms polling.

Best,

Dajon McGill

  • Dajon,

    The quiescent current is not a function of the linear range.  The primary factor here is rather the sampling rate of the device and the number of samples taken per conversion.  For instance, we might see the maximum current consumption sampling XYZZYX continuously at 32x averaging, and have a significant reduction when sampling X only at 1x averaging using wake and sleep mode with a 1 second delay.

    This can generally be calculated by applying IACT over the duration of the conversion time:     (25us * (Averages * Channels to sample - 1)+ 45us

    and the ISLP for the remainder of the wake and sleep time:

    Thanks,

    Scott