PhD Position in Design of Novel Circuits for Low Power TMR-Based Position Sensing

Catholic University of Leuven Department of Electrical Engineering


The MICAS research group of the Department of Electrical Engineering (ESAT) consists of seven professors and +75 PhD researchers. The research at MICAS is very broad, covering topics ranging from nanoscale devices, to high-level digital and machine learning systems and everything in between, like analog and mixed-signal circuits, RF and mm-wave circuits and chips for optical communication, imaging and power management. What defines MICAS, besides this multitude of domains, is our focus on the real-world applicability of our ideas. This is why all our PhD students make chips and devices in a variety of technologies which are characterised in our state-of-the-art measurement laboratories.


Tunneling Magneto Resistance (TMR) sensors were originally used in Hard Disk Drive (HDD) applications. They are now introduced in a broad range of consumer and automotive applications. TMR sensors can be used to measure the angular position in robotics, wheel-speed in vehicles and even current measurement by sensing the radiated magnetic field in high current connections. TMR sensors have a much higher sensitivity and dynamic range than the well-known Hall and conventional magneto-resistance sensors. But this advantage can only be exploited by combining them with equally performing readout circuits.

The readout of a TMR sensor requires separately processing the information in three axes (X, Y, Z), combined with a temperature readout to compensate for the temperature-dependency of the TMR sensor. This requires a four-fold readout circuit which results in a large chip area, high cost and high power consumption. For low cost, low power and small form factor applications, this is a showstopper. The aim of this PhD project is to tackle these issues and thus to enable completely new applications. Specifically, we envision to design novel readout circuits that can combine the information of the three axes plus temperature in a single channel by first performing an intelligent multiplexing of the orthogonal information.


Master in Electrical Engineering with focus on analog or mixed-signal chip design


Full-time PhD position at KU Leuven


For more information please contact Prof. dr. ir. Filip Tavernier, tel.: +32 16 32 10 85, mail:

You can apply for this job no later than July 31, 2020 via the
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  • Employment percentage: Voltijds
  • Location: Leuven
  • Apply before: July 31, 2020
  • Tags: Elektrotechniek

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