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DRV5053: Saturation voltage

Part Number: DRV5053

We use these hall sensors already some time now without problems.

However we had trouble with moisture on the boards leading to all kind of erratic readings .

Now we are in the process of rugedising our software ,as to trigger alarm signals with readings that simply cannot be possible.

As such we implemented a check on the minimal/and maximal voltage that the Hall sensor can possibly deliver. If its outside this range ,something must be wrong with the board.

So we check on the Vout min and Vout max as specified in the datasheet in table 6.7 . The values being 0.2V and 1.8V respectively.

After implementing this check we get errors from perfectly good boards , we see Hall sensors giving output voltages up to 1.84V.

Are we doing something wrong here? did we make some wrong assumptions or is there something wrong with the spec in the datasheet?

  • Hello Peter,

    I think you may be a misunderstanding the datasheet specification.  The minimum Vout max for the linear range is 1.8V.  This means that at worst, any given device we ship out may only operate linearly up to 1.8V, while others may operate linearly up to a higher voltage.  In the recommended operating conditions table, we specify that the device can potentially work up to 2V.  At an undefined point between 1.8V and 2V, the output will become nonlinear with the respect to the B-field and may more gradually increase.

  • Hello Patrick,

    Thanks for the quick response.

    It is indeed very clear now