Optical linear encoders have a number of drawbacks in challenging environments. For engineers seeking alternatives to linear optical position sensors CambridgeIC’s inductive non contact solutions provide precise, robust measurements and are a good replacement for optical encoders in challenging applications and complex product designs.

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Where optical encoders can't go

What causes these drawbacks? Linear optical encoders need protection from dirt, dust and moisture, along with careful alignment. This protection adds cost and complexity to design and manufacture, particularly where there is limited room or the system needs to sense position on many axes.

The alternative: robust and precise position sensing

Based on innovative resonant inductive position sensing technology, CambridgeIC’s position sensors use designs integrated into conventional PCBs to measure linear position. This gives an accurate sensor which has low integration costs, is stable over time and extremely robust. Designers can provide absolute linear, rotary and arc position measurement with high reliability in the most challenging applications, including linear actuators and float level sensors.

Not just linear measurement 

Designs are available for a huge range of geometries - arc position measurement, rotary position measurement and linear position sensing and support is available to design custom sensors.

Working with CambridgeIC position sensors is straightforward - sensor blueprints are available in Gerber format to integrate with customers PCB. These designs work with CambridgeIC’s central tracking unit chips (CTUs) to provide continuous calculation of target position. For evaluation or low volume production assembled sensor units are also available.

Interested? To find out more, download an data sheet, or This email address is being protected from spambots. You need JavaScript enabled to view it.

Get in touch

For more information on our set of standard sensor designs and integration tools.


Founded in 2007, CambridgeIC has developed single chip processors and a set of standard sensor designs and integration tools. These help customers embed resonant inductive sensing inside their products, by drawing on modular and well proven components.


Cambridge Integrated Circuits Ltd
21 Sedley Taylor Road
+44 (0) 1223 413500