Product Brief TLE5041plusC Differential iGMR (Giant Magneto Resistive) Wheel Speed Sensor for indirect TPMS Systems (iTPMS) TLE5041plusC is Infineons first productive GMR Speed Sensor, specially designed to fulfill Features the tight jitter-requirements coming with indirect TPMS systems. These systems control the cars tire pressure based on the information they receive from the wheel speed sensors. As the calculation algorithms need accurate data to start with, low jitter as guaranteed by iGMR High sensitivity technology, is crucial for correct functioning of the system. Traditional Hall sensors get to Best-in-class operating air gap at very their limits with these requirements. TLE5041plusC operates, as its Hall predecessors, as a low Jitter suitable for iTPMS differential system, thus being particularly robust against stray field. High resistance against temperature Even though, because of Infineons integrated iGMR technology, this brand new high-end change: No unwanted pulses at chip is offered at the same price as its Hall based sibling TLE4941plusC. thermal drift Differential measurement principal, Considering all points above, the increasingly popular magnetic encoder applications highly immune against disturbing (pole wheel), TLE5041plusC is available in the same package as its Hall based relatives external magnetic fields (PG-SSO-2-53), with its integrated capacitor for high EMC robustness. Wide frequency range of For the use in older steel wheel systems, Infineon can offer support for a back bias sensor ~ 0.5Hz to 5kHz design: this is particularly important as back bias solutions for MR-technologies are techni- C type with 1.8nF overmolded cally more difficult to design than for Hall, as they require specially shaped magnets. capacitor Fast start-up Being part of the extremely successful Infineon wheel speed sensor family, Advanced performance by dynamic TLE5041plusC is ideally suited for automotive wheel speed applications, such as ABS and self calibration principle ESC, especially when (but not restricted to that) indirect TPMS systems require extremely 2-wire current interface jitter-accurate speed information. Identical package as Hall sensor TLE4941plusC TLE5041plusC is Specially Designed to Support iTPMS Wide operating temperature ranges of -40C T +175C j Evaluation tool available for inter- nal signal read-out, e.g. for air gap indication www.infineon.comProduct Brief TLE5041plusC Differential iGMR (Giant Magneto Resistive) Wheel Speed Sensor for indirect TPMS Systems (iTPMS) Block Diagram Power Supply Management Unit VDD Bandgap- Main Current Biasing Comparator Modulator ESD GMR- Bridge Preamplier LP- Filter GND Speed- ADC Oset-DAC Oscillator (System-Clock) Fuses Magnetic Encoder Wheel Magnet Wheel GMR Sensor 1 GMR Sensor 2 Signal Processing Circuitry Sales Name Description Order Code TLE5041plusC TLE5041plusC in standard PG-SSO-2-53 package SP001029256 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 Technolo - 2013 Infineon Technologies AG. or hints given herein, any typical values stated herein and/ gies Office. Infineon Technologies Components may only All Rights Reserved. or any information regarding the application of the device, be 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 limitation such components can reasonably be expected to cause www.infineon.com 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 Information 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-H9847-X-X-7600 conditions and prices please contact your nearest Infineon able to assume that the health of the user or other persons Date: 11 / 2013 Technologies Office (www.infineon.com). may be endangered. Speed-ADC Algorithm Digital-Circuit