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Magnetometer vs. Magnetic Rotary Sensor

Question asked by R. Main on Jun 25, 2013
Latest reply on Jul 2, 2013 by Mike Stanley

I need a magnetic rotary sensor, similar to the Melexis MLX90316.

However, I'd like a low power 3.3V sensor with SPI inteface, and minimum 0.1degree accuracy.

 

Would the Freescale MAG3110 work in such a configuration?

 

I suspect that the gain in the analog portion of the MAG3110 would be so high that it would saturate with any significant magnetic field (i.e., adjacent to the magnet on the shaft to be sensed).

 

Is there some other way to sense angular location without contact? It must also be mechanically robust.

 

Thanks,

Robb.

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