■  Differential Hall Effect Architecture, Large Operating Air-Gaps and High Sensitivity

GH5901 utilizes differential Hall Effect architecture which can effectively suppresses common-mode interference. Featuring high sensitivity and large operating air-gap capability, the IC reduces mounting precision requirements on wheel hubs and increases assembly tolerances, ensuring reliable speed signal output across diverse vehicle platforms and hub structures. Thanks to the South (S) and North (N) pole back-bias magnets, the IC offers flexible compatibility with various magnetic circuit designs, enabling easy integration for customers.

■  Two-Wire Current Output & Robust EMI Immunity

Due to its two-wire current interface, GH5901 is ideal for long-distance transmission in automotive chassis as it is capable of transmitting power supply and signal simultaneously. Integrated filter capacitor alongside differential Hall effect architecture, the IC effectively suppresses high-frequency noise and common-mode interference, delivering superior EMC performance. Furthermore, with superior ESD protection of ±8kV (HBM), the IC maintains stable output under harsh operating conditions such as electrostatic discharge and power supply fluctuations, meeting the high reliability demands of automotive electronics.

■  Dynamic Self-Calibration, Temperature Unsusceptible Duty Cycle

MT3228 supports a flicker sampling frequency exceeding 20kHz (up to 42kHz), providing full-band flicker detection for various light sources, including LED lighting, high-frequency PWM displays, and fluorescent lamps. The sensor accurately outputs flicker frequency and intensity data, providing reliable technical support for smartphone rear-camera anti-flicker imaging and eye-comfort alert applications.

By adopting dynamic self-calibration function， GH5901 has the ability of adjusting its operating point under varying temperature and magnetic field so as to ensure stable output. Test results show that GH5901 maintains 50% ± 5% highly stable duty cycle across -40°C to +150°C, providing accurate braking control required precise and reliable wheel speed signals for ABS. GH5901 further enriches the magnetic sensor product portfolio of Maxic. Leveraging core capabilities such as differential Hall effect architecture, two-wire current output, and temperature unsusceptible duty cycle, it meets the stringent requirements of automotive and motorcycle ABS wheel speed sensing system. Currently, the IC has successfully passed customer’s large-scale validation and mass-produced, supporting rapid design-in for customers. Going forward, Maxic will continue to advance magnetic sensing technology innovation to deliver reliable smart sensing solutions for automotive electronics, industrial control, and beyond.