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.
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.
Features
• 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
Performance
• Noise Free Resolution 10…15 bits at typical gap
• Tunes to resonators across ±7% frequency range
• [lt] ±0.1% position change across temperature
| 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 |
Downloads:
CAM204 Development Board for up to 4 Type 1 sensors
Standard position target for use with Central Tracking Unit (CTU) and sensor PCB
100° Arc Sensor Type 4: R25/30/36/48/68/100mm
Linear Sensor Type 1 Narrow
Rotary Sensor Type 1: 25mm/36mm/50mm
