The A33020 and the A33020-DD are stray field immune, 360° angle sensors IC that provides contactless high-resolution angular position information based on magnetic sensing technology. The A33020 is a system-on-chip (SoC) architecture that includes angle sensing, digital signal processing, and various output options: SPI, PWM, motor commutation (U,V,W), and encoder outputs (A, B, I). 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 A33020 makes it 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 A33020 is targeting single-die and dual-die ASIL D compliance when used in conjunction with appropriate system-level controls.
The A33020 also includes integrated linearization features. This allows the A33020 to correct for misalignment between the IC and the target magnet with minimal added latency. The A33020 includes an on-chip Turns Counter and Low Power Mode. The Turns Counter tracks motion of the target magnet in increments of 90º. The Low Power Mode reduces power consumption to enable direct connection to the vehicle battery and reduce current drain when the vehicle is in the key-off state.
The A33020 is available in a single-die 14-pin TSSOP (suffix LE) and a dual die 24-pin eTSSOP (suffix LP) package. Both packages are lead (Pb) free with 100% matte-tin lead frame plating. The A33020 is qualified to AEC-Q100 grade 0.
