Introduction bus ic dc/dc converter motor driver ic ripple counter driver ic I/O ic Sensor interface ic sensor ic ip’s SM5651 Low pressure, const. curr. dip SM5652 Low pressure, const. volt. dip SM5812|52 Amplified pressure sensor E 910.86 Sun angle sensor ÿ E 984.01 Calibr. absol. pressure sensor ÿ Fully calibrated absolute pressure sensor with signal This microsystem is a fully calibrated pressure sensor with signal conditioning in one surface mounted package based on JEDEC conditioning ÿ Ratiometric analog output SO20. The sensor is surrounded by the package and covered by gel ÿ Response time typical 100 µs against environments. ÿ Standard package outline based on JEDEC SO20 for easy assembly ÿ – 40°C to 125°C operating temperature The absolute pressure sensor microsystem is a space and cost saving product for low and high volume applications. ÿ Supply voltage 3V to 5V ÿ Onboard temperature measurement and embedded The piezo-resistive sensor bridge converts the applied pressure algorithm to compensate gain and offset for high into a signal which is detected by an analog instrumentation am- accuracy over temperature plifier. The signal path up to the output is fully analog and charac- ÿ Pre molded cavity pressure sensor for variable terized by a huge response time. environments The gain and offset compensation is done by a digital circuit. The on-chip temperature is digitized by an 11 Bit ADC, and combined application with the on-chip stored calibration data. The embedded hard- ÿ Automotive systems e.g. MAP ware fits the temperature information and transforms the data ÿ Industrial systems e.g. Air condition through an 11 Bit DAC to correct the transfer function. ÿ Barometric application ÿ Medical instrumentation A pressure change has a typical signal change at the output after ÿ 100 µs. pinning package Pin Name Description 1 NC Not connected 2 NC Not connected 3 VN Negative sensor tap 4 VDD Supply voltage ranging from +3.0V to 5.0V 5 VOUT Amplified sensor output signal 6 NC Not connected 7 CSB Slave select 8 MISO Master in slave out 9 MOSI Master out slave in 10 SCLK SPI clock 11 ZERO _ B Start auto-zeroing (low active) 12 TEST _ 1 13 TEST _ 2 14 TEST _ 3 15 NC 16 PROG 17 VP 18 GND Ground 19 NC Not connected 20 NC Not connected so20 Bring chip into test mode (only for manufacturing process) Test mode: external clock/clock observe (only for manufacturing process) Test mode: external reset/power on reset observe (only for manufacturing process) Not connected Programming voltage (only for manufacturing process) Positive sensor tap THIS PRODUCT IS UNDER DEVELOPMENT description ÿ features E984.01 ÿ THIS PRODUCT IS UNDER DEVELOPMENT THIS PRODUCT IS UNDER DEVELOPMENT ÿ Calibrated absolute pressure sensor Block diagram Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. 130 Copyright © 2007 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited. www.elmos.de | [email protected] elmos product catalog 2007/2008 131