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DRV425: Oscillation Frequency ???

Sylke Bechstein
Prodigy 10 points
Part Number: DRV425

As far as I know, fluxgates are always driven into saturation by means of a periodic signal. This requires an excitation coil and an oscillator. However, I cannot find these components in the principle sketch for the DRV425. Can someone please explain to me a) how and b) with which frequency the fluxgate in the DRV425 is operated? Many thanks.

  • 0
    TI__Mastermind 32220 points

    Hello Sylke,

    There are some proprietary internal items that cannot be shared but the internal frequency will not be seen at the output and the output noise and  is larger than the output bandwidth limitation of the 47kHz at the output.

    Some items are internal items that cannot be discussed without NDA and not in an open forum as this.

    How can I help with using this in your application?  Why is there a concern for the fluxgate frequency?