Shanghai Chongming Zhiyan Health Science Research Institute (Zhiyan Institute) recently disassembled the Mentech’s Belief sports watch and found that Maxic’s ultra-compact, high-performance, and low-power optical crown sensor, MT3503, is integrated into the rotating crown of the Mentech’s Belief sports watch, enabling intelligent controls such as flipping pages, zooming in on maps, navigating menus, and starting workouts.

MT3503 combines rotational angle detection, key press detection, and 2D displacement tracking, allowing precise motion tracking capability. It features a high-speed image sensor with a built-in motion navigation algorithm and an 850nm VCSEL emitter. With a large pixel array and high-precision algorithms, it delivers angle detection accuracy ofup to 0.1°, capturing even the finest movements with millimeter-level precision for a seamless user experience.

MT3503 offers superior compatibility with components’ material like watch shafts, featuring advanced on-chip calibration that simplifies assembly tolerance challenges. This significantly cuts production costs while maintaining high product consistency.

With up to 10kV electrostatic discharging capability, MT3503 provides stable performance across diverse environments, ensuring long-term durability and reliability.

Features

• Integrates both rotation and key press detection functions

• Available in compact OLGA package: 3.00mm x 2.10mm x 0.48mm

• 24×24 pixels super large sensing area and ultra-wide depth of field, achieving 0.5mm~30mm detection height

• Supports up to 5000 CPI (on STS) resolution, and up to 900rpm crown rotation speed

• Ultra-low power design: 550μA in run mode, 5μA in sleep mode, and 1.5μA in standby mode

• Built-in OTP with CPI calibration accuracy of 0.625%

• 1MHz I2C communication with SDA/SCL swap function, allowing two devices to operate on the same bus.

• Supports 2-wire SPI interface

• Designed with VCSEL fault detection

MT3503 chip is used in a variety of devices, including smartwatches, VR/AR headsets, headphones, and smart home products like smart knobs. It provides precise rotation angle detection, key press detection, and motion tracking, ensuring a stable and reliable user experience. The chip simplifies interaction, enabling every touch and rotation intuitive and responsive. This innovation is quietly transforming the way we interact with technology, bringing advanced features into our daily lives.

Mentech is a premium outdoor brand specialized in creating smart, eco-friendly solutions for a better lifestyle. Its products include Sports watches, panoramic cameras, outdoor power supplies, smart home appliances, as well as camping gear, lighting, and bicycle accessories. The Mentech Belief Sports watch, designed for outdoor sports, features Corning Gorilla Glass for enhanced durability and scratch resistance, along with an AMOLED color touchscreen for sharp and vivid displays.

Maxic is committed to delivering relentless innovation and refined products, offering customers exceptional, cutting-edge solutions.

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