P R O D U C T B R I E F 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 ■ T L E 4 9 8 0 C N e v e r s t o p t h i n k i n g . P R O D U C T Clamping & Reverse Voltage Protection Supply Regulator Hall Supply Analog Supply Block Diagram OUT Hyst Comp Clamping VS Overtemperature & Short-Circuit Protection Main Comp Digital Supply Enable N-Channel Open Drain Spinning Hall Probe Interface + _ Chopper & Filter Tracking ADC Digital min. max. Algorithm Offset DAC Actual Switching Level Bias for Temperature & Technology Compensation Parameter Reset Value Operating voltage <1 BTPO Frequency range Temperature range Tj k0 factor B [mT] V ms 20 ... 75 Programm. Range TCmagnet -1200 ... 500 mT ppm/K 0 ... 4500 Hz -40 ... +155 ˚C 0 ... 100 % Bcal = Bmin + (Bmax - Bmin) × k0 Bmax How to reach us: http://www.infineon.com Dynamic Switching Point Bcal BTPO Bmin 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. Unit 3.3 ... 18 Power on time PROM K-Factor inv. Bit BTPO GND Oscillator B R I E F Static Switching Pre-Calibrated Φ [˚] Type Sales Code Package TLE4980C Q62705-K675 PSSO-3-9 How to reach us: http://www.infineon.com Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81669 München © 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. Published by Infineon Technologies AG Infineon Technologies AG Richard-Strauss-Straße 76 81679 München 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 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