MEMS pressure sensor and analog chain in monolithic integrated device
Melexis’ proprietary piezo-resistive MEMS technology combined with a high accuracy sensing element, low noise analog front end and 16-bit sigma-delta analog-to-digital converter (ADC) delivers superior performance. The resulting sophisticated analog chain provides the necessary amplification and offset compensation for the sensing element. The built-in 16-bit microcontroller unit (MCU) deals with temperature compensation and supplies the diagnostic mechanisms required for safety critical applications.
An integrated programmable EEPROM memory allows different configurations to be supported, such as independent setting of diagnostic functions for over-voltage or under-voltage supply conditions and over-pressure or under-pressure conditions, as well as selectable digital filter settings to further reduce output noise or alternatively to decrease sensor response time. It also permits sensor compensation data and unit identity to be stored.
Offered in a robust, plastic molded, 16-pin surface mount package, the MLX90809 sensor device can deliver pressure data via an analog output voltage ratiometric to the supply voltage or using the SENT digital protocol. It has an operational temperature range of -40 °C to +150 °C, enabling it to cope with the most demanding automotive environments.
To learn more please visit: www.melexis.com/MLX90809
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