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| PRODUCT BRIEF Smart Hall Effect Sensor for Camshaft Applications Applications Camshaft position sensor Features TPO True Power On functionality Mono-cell chopped Hall system TIM Twisted Independent Mounting Dynamic self-calibrating algorithm End-of-line programmable switching points TC of back-bias magnet programmable High sensitivity (B min < 1.5 mT) and high stability of the magnetic switching points High resistance to mechanical stress Digital output signal (voltage interface) Short-circuit protection Module style package with two 4.7 nF integrated capacitors P-SSO-3-9 TLE4980C Never stop thinking. PRODUCT VS OUT Overtemperature & Short-Circuit Protection Clamping BRIEF Block Diagram The IC consists of a chopped hall-probe (mono-cell in the centre of the chip) with a chopped preamplifier. Next there is a summing node for threshold level adjustment. The threshold switching is actually done in the main comparator. A converter feeds a digital calibration logic. This logic monitors the digitalized signal by looking for minimum and maximum values and also calculates correction values for threshold adjustment. The static switching level is simply done by fetching a digital value out of a PROM. Clamping & Reverse Voltage Protection Supply Regulator Hyst Comp Main Comp Enable N-Channel Open Drain Interface Hall Supply Analog Supply Digital Supply Spinning Hall Probe + _ Offset DAC Actual Switching Level Chopper & Filter Tracking ADC Digital min. max. Algorithm Bias for Temperature & Technology Compensation Oscillator GND Reset PROM K-Factor inv. Bit BTPO Parameter Operating voltage Power on time BTPO Programm. Range TCmagnet Frequency range Temperature range Tj k0 factor Value 3.3 ... 18 <1 20 ... 75 -1200 ... 500 0 ... 4500 -40 ... +155 0 ... 100 Unit V ms mT ppm/K Hz C % B [mT] Bmax Bcal BTPO Bmin Bcal = Bmin + (Bmax - Bmin) x k0 How to reach us: http://www.infineon.com Dynamic Switching Point Static Switching Pre-Calibrated Infineon Technologies AG Richard-Strauss-Strae 76 81679 Munchen Tel. (+49) 89-92 21 40 86 Fax (+49) 89-92 21 20 71 Infineon Technologies (AP) Pte Ltd 25 New Industrial Road Singapore 536211 Tel. (+65) 8-40 05 91 Fax (+65) 8-40 00 76 Infineon Technologies Corp. Suite 112, Sensors Marketing Group 21800 Haggerty Rd. NORTHVILLE, (MI) 48167 Tel. (+1) 2 48-3 74 08 90 Fax (+1) 2 48-3 74 25 01 [] Type TLE4980C Sales Code Q62705-K675 Package PSSO-3-9 How to reach us: http://www.infineon.com Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81669 Munchen (c) Infineon Technologies AG 2003. All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide. Warnings Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies Components may only be used in lifesupport devices or systems with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered. Ordering No. B138-H8199-X-X-7600 Printed in Germany PS 05032. NB Published by Infineon Technologies AG |
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