Allegro MicroSystems A17802 Advanced Inductive Position Sensor IC
Allegro MicroSystems A17802 Advanced Inductive Position Sensor IC is designed to measure the rotational angle of a metallic target and provide sine/cosine output. The output information is provided over a differential sine and cosine analog interface. This sensor IC features digital processing that optimizes the inductive front-end and applies compensations that maximize system-level angle accuracy. The A17802 sensor IC measures angle with <0.5°elec accuracy at speeds up to 250k eRPM. This sensor IC features Front-end gain automatic optimization at each power-up and dynamic autocalibration for continuous error reduction.
The A17802 sensor IC is programmable via SPI or Manchester protocol, and the programmable zero angle enables arbitrary target alignment. This IC is AEC-Q100 qualified and provides a high-speed absolute-angle sensor that is suitable for advanced synchronous motor control, including automotive electric motor systems. The A17802 sensor IC is ASIL-compliant and operates within the -40°C to 160°C temperature range. Typical applications include traction e-motors, BLDC motor position, electronic power steering, and pumps.
Features
- Measures angle with <0.5°elec accuracy at speeds up to 250k eRPM
- Front-end gain automatic optimization at each power-up
- Dynamic autocalibration for continuous error reduction
- Harmonic compensation for enhanced linearization with simpler coil design
- Synchronization compensation perfects commutation timing for efficient motor control
- Programmable zero angle enables arbitrary target alignment
- Programmable via SPI or Manchester protocol
- Qualified to AEC-Q100 grade 0
- ASIL-compliant
Applications
- Traction e-motors
- BLDC motor position
- Electronic power steering
- Pumps
- Steer-by-wire
Block Diagram
Typical Application Circuits
Kit
Allegro MicroSystems ASEK-17802-T Sensor Evaluation Kit
Provides an easy way to evaluate the A17802 using a computer running Microsoft Windows.