Hi,
I use DRV5053 to measure the distance between the hall sensor and a magnetic material, but I found if the magnetism were too stronge, the measurement was insensitive. Could you recommend a magnetic material for this application?
Thanks.
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Hi,
I use DRV5053 to measure the distance between the hall sensor and a magnetic material, but I found if the magnetism were too stronge, the measurement was insensitive. Could you recommend a magnetic material for this application?
Thanks.
Hi Di, you have several variables to adjust, to prevent reaching the saturation region where the DRV5053 output no longer changes.
1. Use a smaller magnet. Larger magnets project more flux density at a given distance.
2. There are different DRV5053 versions to choose from. The "OA" is the least sensitive and typically saturates >73mT. This calculator provides an easy way to see possible output voltages for any magnetic flux density.
3. Use a different magnetic material, such as a ferrite, which has lower flux density than many other types.
Best regards,
RE