The MLX91805 TMS integrates an 800g XZ-axis accelerometer that detects up to 10,000 samples per second. It also integrates a high-precision pressure sensor, as well as temperature and voltage sensors.
The MLX91805 is suitable for commercial vehicle tires, including heavy-duty vehicles, and passenger cars. With new EU regulations on tire pressure monitoring for heavy-duty commercial vehicles coming into effect between 2022 and 2024, its multiple sensors help ensure compliance and provide additional information, such as load, which can extend tire life and improve fuel economy and safety.
Integrating a low-power 16-bit microcontroller and a 315/433 MHz RF transmitter that draws only 5 mA at an output power of 5 dBm, and with an extremely low quiescent current of 90 nA, the MLX91805 can operate on a small battery for the entire lifespan of the tire. In addition to built-in diagnostics and fault detection, a math coprocessor enables fast and efficient digital signal processing (DSP). Beyond supporting the development of smart tires, the MLX91805 comes with the Melexis Library to help application-level software capture and interpret key information such as accelerometer signals from the tire's footprint area. The MLX91805 is available in a 5 mm x 4 mm DFN14 package.
