Product Brief SP37 450kPa Tire Pressure Sensor Features The SP37 is a highly integrated device which performs all necessary functions for a Tire Pressure Monitoring System (TPMS) wheel module suited for high-volume Pressure sensor with a range applications. The device contains the sensing elements, the microcontroller, the from 100 up to 450kPa LF receiver, the RF transmitter and more in one package requiring only few external Radial acceleration sensor components to complete a TPMS module. Temperature sensor Supply voltage sensor Since 2003, more than 150 million TPMS sensors of our continuously improved Embedded 8051 compatible product generations were sold worldwide. 8-bit microcontroller 6kB on-chip FLASH memory The sensor design of the SP37 is based upon Infineons patented bulk micro- 256Byte RAM machined sensing technology which allows highly reliable measurements in harsh 315 and 434MHz FSK/ASK environments. RF-transmitter The SP37 measures pressure, radial acceleration, temperature and supply voltage. Selectable output power The device is compliant to the RoHS standard, with a pressure range from of 5 or 8dBm 100 up to 450kPa. 125kHz ASK high-sensitivity Numerous embedded firmware functions and a development kit enable fast LF-receiver development cycles. Advanced power control/ wake-up system to minimize battery consumption Ultra low standby current 3V Lithium Cell TPMS Module (< 0.7A) Supply voltage range 1.93.6V SP37 Operating temperature range Power Supply Management -40125C Pressure PG-DSOSP-14-6 package Sensor RoHS compliant, green package Acceleration RF Sensor Transmitter Tx Data ADC 8-bit C 315/434MHz Temperature Sensor Voltage Sensor Flash ROM LF Sensor Calibration Firmware Receiver Data & Application Rx Data Library Firmware 125kHz www.infineon.com/sensorsProduct Brief SP37 450kPa Tire Pressure Sensor Parameter Symbol Values Unit Note/Test Condition Min. Typ. Max. Input Pressure Range P 100 450 kPa T = -40...125C in Measurement Error p -7 +7 kPa T = 0...50C Error p -9 +9 kPa T = 50...70C Error p -17.5 +17.5 kPa T = -40...0C Error T = 70...125C Input Acceleration Range a -115 115 g T = -40...125C in Sensitivity Error a -18.75 +18.75 % T = -40...90C Sensitivity a -24 +24 % T = 90...125C Sensitivity Offset Error A -6 +6 g T = -20...70C Offset A -8.5 +8.5 g T = -40...-20C Offset T = 70...90C A -12 +12 g T = 90...125C Offset Temperature Measurement Error T -3 +3 C T = -20...70C Error T -5 +5 C T = -40...-20C Error T = 70...125C Voltage Measurement Error V -100 +100 mV Error Tighter specifications are available on request. product s ummary Sales Name Description Order Code SP370-25-106-0 Tire Pressure Sensor SP000934274 Published by Attention pleAse WArnings Infineon Technologies AG The information given in this document shall in no event Due to technical requirements components may contain 85579 Neubiberg, Germany be regarded as a guarantee of conditions or characteristics dangerous substances. For information on the types in (Beschaffenheitsgarantie). With respect to any examples question please contact your nearest Infineon Technologies 2012 Infineon Technologies AG. or hints given herein, any typical values stated herein and/ Office. Infineon Technologies Components may only be All Rights Reserved. or any information regarding the application of the device, used in life-support devices or systems with the express Infineon Technologies hereby disclaims any and all warran- written approval of Infineon Technologies, if a failure of Visit us: ties and liabilities of any kind, including without limita- such components can reasonably be expected to cause www.infineon.com tion warranties of non-infringement of intellectual property the failure of that life-support device or system, or to affect rights of any third party. the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted inFormA tion in the human body, or to support and/or maintain and For further information on technology, delivery terms and sustain and/or protect human life. If they fail, it is reason- Order Number: B142-H9490-G1-X-7600 conditions and prices please contact your nearest Infineon able to assume that the health of the user or other persons Date: 06 / 2012 Technologies Office (www.infineon.com). may be endangered.