The CAM502 is a single-chip non-contact high-speed position sensor IC for resonant inductive position sensing. It can measure a single sensor at 5000 samples per second. Measurements can be synchronised to a host SPI interface so that results are delivered to the host with as small as possible Group Delay.
Features
- Resonant inductive position sensing engine
- Fully ratiometric measurements
- Pipeline measurement...
- For high-speed operation, and
- For minimising Group Delay from physical position to SPI read
- SPI communications (slave device, up to 10Mbit/s)
- User IOs for sample indicators
- Internal software upgradable over SPI
- Works with one Type 2 or one Type 6 sensor
- External crystal controlled timing
Performance
- Group Delay from physical position to SPI ready ≤ 140µs
- Noise Free Resolution...
- 12…15 bits at typical gap, depending on sensor
- Up to 3 more bits available from optional on-chip filtering, at the expense of additional Group Delay
- Automatic tuning to resonators across ±7% frequency range
- Maximum update rate 5100 independent samples per second
- Single 3.0...3.6V supply
- -40°C to +125°C (CAM502BE)
28-pin QFN pinout
