How to choose and use angle sensors for power steering, motors and robotics
The TLE5109A16E2210XUMA1 is part of a line that comprises high-precision AMR fast analog angle sensors with an error angle of 0.1°. Though AMR-based angle sensors are designed for 180° angle measurement, they are also applicable for 360° measurement in motors with an even number of pole pairs because the AMR sensing element actually measures the double angle, sine and cosine (Figure 4). Their small angle error also makes them suitable for a broad array of magnetic fields, with flux densities ranging from 10 mT to more than 500 mT. The TLE5109 angle sensors operate from 3.3 volt or 5 volt supplies. Other features include a short start-up time of between 40 microseconds (µs) and 70 µs to ensure minimal latency and support for speeds of more than 30,000 revolutions per minute. The TLE5014C16XUMA1 is one of a line of GMR sensors that can be programmed to accommodate a wide range of applications by storing the required configuration in on-board EEPROM (Figure 5). These sensors boost flexibility and ease of use by also offering a choice of interfaces that includes PWM, SENT, SPC, and SPI.
Figure 4: The AMR-based angle sensor is designed for 180˚ angle measurement, but it can be used to measure through the full 360˚ because it measures both sine and cosine angles. (Image source: Infineon Technologies)
Figure 5: The pre-configured and pre-calibrated TLE5014 angle sensors have the flexibility to be programmed to adapt to any application using the on-board EEPROM. (Image source: Infineon Technologies)
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