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Automotive magnetic sensors provide redundant safety

Posted: 29 Jun 2012 ?? ?Print Version ?Bookmark and Share

Keywords:magnetic sensor? automotive apps? sensor system?

NXP Semiconductors NV has debuted the KMA220 dual magnetic sensor designed for automotive applications that need a mechanical angle to be measured, such as throttle control applications. The device integrates two sensor systems in a single package to provide a redundant system solution.

Operating in a simple disk magnet configuration with no need for a PCB or external components, the KMA220 offers a unique solution to the automotive market. It claims to be fully calibrated and ready to use, with three capacitors in addition to two sensor dies and two signal conditioning ASICs. This, combined with its dual nature, reduces system cost for customers and simplifies the assembly process. To achieve redundancy in throttle applications, car manufacturers have previously had to install two single sensors on a leadframe or onto a PCB, bending them to fittypically requiring an expensive ring magnet configuration to operate. With the dual KMA220 sensor, only one simple installation is required.

The KMA220 uses NXP's unique ABCD9 technology, an automotive platform at the cutting edge of analog mixed-signal integration. This technology is based on NXP's CMOS 14 process and significantly improves performance compared to previous sensor products with integrated ASICs. The KMA220 is also qualified according to the new human metal model with ESD protection and EMC performance.

The KMX220 is available immediately. It is priced at $3.30 for quantities of 10k pieces and $2.60 for quantities of 100k pieces.

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