AS5048 Angle Encoder Magnet Distance

Discussion in 'The Projects Forum' started by jpanhalt, May 14, 2015.

  1. jpanhalt

    Thread Starter AAC Fanatic!

    Jan 18, 2008
    The AMS AS5048 magnetic angle encoder has an automatic gain control to compensate for different magnetic field strengths, and the gain setting can be read by the user. Recommended magnet-to-chip distance is 0.5 mm to 3 mm using the recommended magnets. The evaluation board has a simple set screw adjust that allows one to adjust that distance.

    For the sensor I am designing, I could incorporate an adjustment feature, but that will add complexity to the machining, and I would just as soon avoid it if possible.

    For those who have used this or similar chips, is it necessary to adjust that distance, or can one simply get the recommended magnet, set the distance at 1.5 mm (for example), confirm it works and move on? How often is there a problem? If you do check the AGC, what value do you try to get?

    Regards, John