MEMS Pressure Sensor Dies from Melexis
July 24, 2011
MLX90807 and MLX90808 fully integrated relative and absolute pressure sensor dies from Melexis, Nashua, NH, are fully automotive qualified and cover many pressure ranges from a span of 100 mbar to several bars. Each die consists of a silicon membrane with piezoresistors to transform the stress induced by pressure into an electrical signal. An analog signal chain interacts with a digital core, including programmable memory, to allow full calibration on chip. Sensors are fully programmable through the connector with built-in protection against all typical overvoltage automotive conditions and include circuitry to meet all automotive diagnostic requirements including broken membrane detection and short- and open-circuit conditions. Typical overall error range is <1% and output is a 5 V analog ratiometric signal.
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