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Today, automotive safety sensors are gradually becoming an increasingly important component of automobile manufacturing. The world's major automotive electronics giants have begun to seize the beach security sensor market, Infineon, Freescale, STMicroelectronics, Renesas, NXP, etc. Semiconductor companies are already gearing up and have diversified product lines. These companies' automotive security solutions are also very targeted.
Infineon already launched the tpms sensor SP35 in the Asia Pacific market as early as 2007. The sensor has also been mass-produced and has sold millions of units to date. It integrates the sensing and emission functions required for the wheel module, which enables the MCU, the sensor and the RF transmitter to be packaged together. Compared with existing SP30 and external RF transmitter IC solutions, SP35 system solution will reduce one component.
In order to meet the growing market demand, Freescale has put into use the advanced MEMS 8-inch production line, which can improve the product's power consumption, economic efficiency and volume in terms of indicators, so Freescale's new MEMS Sensors can easily deal with competitive challenges. Freescale introduced the mpmsy8300tpms in 2007. This TPMS is the industry's first tpms to incorporate capacitive pressure sensors. In normal operation, the TPMS immediately reminds the driver when any tire (including the spare tire) is under non-optimal tire pressure.
NXP's products in the tpms field are P2SC series signal conditioners. The high-level member pch7970 in this series is mainly used for signal conditioning and data framing to continuously monitor the pressure of individual tires. With the help of an 8-bit risc core, the device can provide general-purpose I/O control external circuitry and provide a 12-bit analog-to-digital converter to monitor the output voltage of the piezoresistive bridge sensor.
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