Analogue, Mixed Signal, LSI


Universal magnetic encoder

23 January 2013 Analogue, Mixed Signal, LSI

The KMA36 from Measurement Specialties is a universal magnetic encoder for precise rotational or linear measurement. It features system-on-chip technology that combines a magneto-resistive element along with analog-to-digital converter and signal processing.

By employing anisotropic magneto-resistive (AMR) technology, the device is able to contactlessly determine the magnetic angle of an external magnet over 360 , as well as the incremental position on a magnetic pole strip with 5 mm pole length. Its sleep and low-power modes, as well as automatic wakeup over I²C, make the KMA36 ideal for many battery-powered applications.

Position data can be transmitted using a PWM or two-wire (SDA, SCL) communication bus. Using the programmable parameters, the user has access to a wide range of configuration options to ensure design freedom and functionality.

Used as both a linear position sensor or a rotary position sensor, the sensor is insensitive to magnetic drift due to mechanical tolerances, changes in temperature or thermal stress. Its maintenance-free operation and high bandwidth make it a good choice for dynamic applications in harsh environments.

For more information contact Tobie Muller, Accutronics, +27 (0)11 782 8728, [email protected], www.accutronics.co.za



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