Design News, May 2013

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Besides superior performance, reliability, and the more comprehensive features, one substantial advantage is that packaging and test is very similar to standard IC processes. Economy of scale can be achieved. This significantly contributes to the favorable cost structure, price and availability. Multitest's standard Test Handler MT9928 has been deployed for calibrating and trimming MEMS oscillators at various customers. All systems were delivered as full Plug&Yield solutions, including the Multitest conversion kit, Multitest socket and Multitest load board. All typical packages sizes of MEMS oscillators are supported (2.0x2.5, 2.5x3.2, 3.2x5.0, 5.0x7.0 and others on request). The MT9928 Gravity Feed Handler ensures the required temperature accuracy (up to +/-0.2°K), but also provides high throughput and low cost of test. This way, the test handler fully supports the favorable cost structure. The MT9928 xm is a well-established, user-friendly, and easy to maintain platform. Additionally, the unique Multitest Plug&Yield program delivers a fully-integrated solution with all components harmonized, configured and finally, checked at system level. Therefore, the MT9928 is also a solution for companies that are not overly familiar with the standard IC test process. Multitest Rugged MEMs Pressure Sensors The first of Melexis' line of commercial, off the shelf, packaged MEMs pressure sensors. SEE US AT BOOTH 438 DESIGN2PART SANTA CLARA–MAY 22 & 23 This new device is a highly accurate, AEC Q100 qualified relative pressure sensor specifically targeted at 1 Bar applications. The company's 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 fully programmable EEPROM memory allows different configurations to be supported. Examples include independent setting of diagnostic functions for over-voltage or under-voltage supply conditions, over-pressure or under-pressure conditions, and 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 highly 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 -40C to +150C, enabling it to cope with the most demanding automotive environments. Melexis Microelectronic Integrated Systems N.V. Design News | MAY 2013 | www.d e sig n n e ws.c o m –58– magenta cyan yellow black ES245796_DN1305_058.pgs 05.03.2013 02:57 UBM

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