The CAM312 is a single-chip non-contact position sensor IC for resonant inductive position sensing. It can connect to and process up to two sensors and report results to a host over a single SPI interface.

Development boards are also available to help you understand CAM312 performance. Find out more here


  • Resonant inductive position sensing engine
  • Fully ratiometric measurements
  • Fast SPI communications (slave device)
  • User IOs for sample indicators
  • Measures two Type 4 or 1 sensors or one Type 2 or 6
  • SPI interface checksum available for integrity check
  • Internal software upgradable over SPI


  • Maximum update rate 2000 independent samples per second
  • Group Delay from physical position to SPI ready 200µs
  • Noise Free Resolution 10…15 bits at typical gap, depending on sensor
  • Automatic tuning to resonators across ±10% frequency range
  • Single 3.0...3.6V supply
  • -40°C to +125°C (CAM312ME)
  • -40°C to +150°C available

CAM312ME PinoutB

CTU Datasheets