Stray-Field-Immune, Hall-Effect Angle Sensor IC with SPI, PWM, and SENT Interfaces in Single and Dual Die Packages

The A33022 and the A33022-DD are 360° angle sensor ICs that provide contactless high-resolution angular position information based on magnetic sensing technology. The A33022 has a system-on-chip (SoC) architecture that includes angle sensing, digital signal processing, and various output options: serial peripheral interface (SPI), pulse width modulation (PWM), or single edge nibble transmission (SENT). Also integrated in the device is on-chip EEPROM technology capable of supporting a high number of read/write cycles, for flexible end-of-line programming of calibration parameters.

The low 25 μs latency of the A33022 and the A33022-DD makes them ideal for automotive applications requiring fast 0° to 360° angle measurements, such as electronic power steering (EPS), seatbelt motor systems, transmission actuators, shift-by-wire systems, electronic braking systems, and throttle systems.

The A33022 and the A33022-DD are developed as a Safety Element out of Context (SEooC) in accordance with ISO 26262 requirements for hardware product development for use in safety-critical applications (pending assessment). The A33022 also includes integrated linearization features. This allows the A33022 to correct for misalignment between the IC and the target magnet with minimal added latency. The A33022 is available in a single-die 14-pin TSSOP package and a dual-die 24-pin eTSSOP package. The packages are lead (Pb) free with 100% matte tin lead frame plating. The A33022 is qualified to AEC-Q100 grade 0.