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Higher Resolution with 64 MHz Oscillator

A project log for Magnetostrictive Position Sensor

Hard- and Software for a position measurement sensor with a magnet and a magnetostrictive wire.

florian-bFlorian B. 05/19/2025 at 21:550 Comments

On the Embedded World Conference 2025 in Nuremberg I visited the booth from Distributor

Würth Elektronik eiSos GmbH & Co. KG. One of the presented product portfolios sparked my interest with respect of this project: Quartz and Oscillators from IQD - a sub company of the Würth Elektronik group.

After an interesting conversation with one of the sales men he offered me to sponsor  free samples of Quartz oscillators. I opted for a 64 MHz Quartz oscillator  because that speed seems to be yet within reach with my a bit retro-fashioned TTL-Counter setup. Of course I would have to replace some chips with  Fast Logic series especially for the counters and trigger logic.

And after a week or so a  parcel arrived with 5 LFSPXO009615 Oscillators.

Now this tiny thingy is a 2.5V device and I had to build a quick and dirty level shifter with a transistor.

And actually it worked!  With this little quartz the counter can now  resolve 15.6ns ( 1/64 us). 

This brings a theoretical measurement resolution of 50 um.  Actually the measurements are still a bit noisy so this cannot be fully exploited yet.

 Thanks to IQD and Würth Elektronik for showing interest in my project and sending me free oscillator samples! 


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