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CAM204 Central Tracking Unit (CTU): 4-channel position sensor controller

CambridgeIC’s Central Tracking Unit (CTU) chip is a single-chip processor for position measurement. It implements the electronic processing for resonant inductive position sensing technology.

For 2-channel applications the newer CAM312 is recommended!

The CTU measures the position of contactless, inductively coupled targets relative to sensors that are built from printed circuit boards to CambridgeIC’s design.
The CTU supports a wide variety of different sensor types, including rotary and linear.

• Resonant inductive position sensing engine
• Fully ratiometric measurements
• Automatic tuning to target frequency
• SPI communications (slave device)
• User IOs for position triggers and sample indicators
• Measures up to 4 sensors
• Can drive external DAC for up to 4 analog outputs
• Internal software upgradable over SPI

• Noise Free Resolution 10…15 bits at typical gap
• Tunes to resonators across ±7% frequency range
• [lt] ±0.1% position change across temperature

Technical Data

Order Code Package Temp. Package qty.
CAM204BE-0003 28-pin SSOP -40°C to 125°C tube 47

reel 2100

CAM204MI 28-pin QFN -40°C to 85°C


CAM204 datasheet (PDF)

Cambridge IC Inductive Sensing Product Fyer (DE, PDF)

Induktive Resonator-Positionserkennung (DE, PDF)

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