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| High Precision Hall-Effect Switch Data Sheet Version 1.0 2003-11-20 TLE4976-1H Features * * * * * * * * * * * * * 2-wire current interface 6/14 mA 3.0V to 24V supply voltage operation Operation from unregulated power supply High sensitivity and high stability of the magnetic switching points High resistance to mechanical stress by Active Error Compensation Reverse battery protection (-18V) Superior temperature stability Peak temperatures up to 195C without damage Low jitter (typ. 1s) High ESD performance (8kV HBM) Digital output signal Unipolar version SMD package P-SC59-3-2 (SOT-23 compatible) Ordering Code Q62705K0710 P-SC59-3-2 Type TLE4976-1H Package P-SC59-3-2 Functional Description The TLE4976-1H is an integrated circuit Hall-effect sensor designed specifically for highly accurate applications with a current interface. Precise magnetic switching points and high temperature stability are achieved by active compensation circuits and chopper techniques on chip. TLE4976-1H Circuit Description The chopped Hall IC Switch comprises a Hall probe, bias generator, compensation circuits, oscillator, and a current output. The bias generator provides currents for the Hall probe and the active circuits. Compensation circuits stabilize the temperature behavior and reduce technology variations. The Active Error Compensation rejects offsets in signal stages and the influence of mechanical stress to the Hall probe caused by molding and soldering processes and other thermal stresses in the package. This chopper technique together with the threshold generator and the comparator ensures high accurate magnetic switching points. Vs 1 Voltage Regulator (reverse polarity protected) ESD Oscillator & Sequencer Bias and Compensation Circuits Comparator with Hysteresis + Amplifier Chopped Hall Probe Filter 3 2 GND NC Figure 1 Block Diagram Data Sheet 2/9 2003-11-20 TLE4976-1H Pin Configuration Figure 2: Pin Configuration (SOT-23 pin compatible) Pin Definition and Functions Pin 1 2 3 Symbol VS NC GND Function Supply voltage No internal connection Ground Data Sheet 3/9 2003-11-20 TLE4976-1H Absolute Maximum Ratings Tj = -40 to 150C Parameter Supply Voltage Supply Current through protection device Junction Temperature Symbol VS Is Tj min. -18 -18 -18 -50 max. 18 24 26 +50 Unit V mA Conditions for 1h (RS+RL > 75 Ohm) for 5min (RS+RL > 75 Ohm) 155 C for 2000 h (not additive) 165 for 1000 h (not additive) 175 for 168 h (not additive) 195 for 3x1 h (additive) Storage Temperature TS -40 150 C Magnetic Flux Density B unlimit. mT Note: Stresses above those listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ESD Protection Human Body Model (HBM) tests according to: EOS/ESD Association Standard S5.1-1993 and Mil. Std. 883D method 3015.7 Parameter ESD Voltage Symbol VESD max. 8 Unit kV Conditions HBM, R= 1.500 Ohm, C= 100pF; TA = 25C Operating Range Parameter Supply Voltage Junction Temperature Symbol VS Tj min. 3.0 3.0 -40 typ. max. 18 24 150 175 Unit V C for 168 h Conditions for 5min (RS+RL > 100 Ohm) Data Sheet 4/9 2003-11-20 TLE4976-1H AC/DC Characteristics over operating range, unless otherwise specified. Typical values correspond to VS=12V and TA=25C. Parameter Supply Current low Supply Current high Reverse Current Output Fall Time Output Rise Time Chopper Frequency Switching Frequency 2) Delay Time 3) Output Jitter Symbol ISlow IShigh ISR tf tr fOSC fSW td tQJ min. 5 12 0 typ. 6 14 0.4 0.4 320 13 1 max. 7 17 0.2 1.6 1.6 1) 15 Unit mA mA mA s s kHz kHz s sRMS Conditions B 0 - BREP Repeatability of magnetic 40 TRMS 4) thresholds 5) Power-On Time tPON 13 s 6) Thermal Resistance RthJA 100 K/W P-SC59-3-2 1) To operate the sensor at the max. switching frequency, the value of the magnetic signal amplitude must be 1.4 times higher than for static fields. This is due to the -3dB corner frequency of the low pass filter in the signal path. 2) Systematic delay between magnetic threshold reached and output switching. 3) Jitter is the unpredictable deviation of the output switching delay. 4) BREP is equivalent to the noise constant. 5) Time from applying VS >= 3.0 V to the sensor until the output state is valid. 6) Thermal resistance from junction to ambient. e.g.: VS=12.0 V, RS=100 Ohms, IShigh_typ=14 mA => Power Dissipation Pdis=148.4 mW. In TA = Tj - (RthJA * Pdis) = 175 C - (100 K/W * 0.1484 W) => TA = 160.1 C Typ. Value for Square-Wave Signal 1kHz Typ. Value for B/t>12mT/ms VS >= 3.0V Magnetic Characteristics over operating range, unless otherwise specified. Typical values correspond to VS=12V. Parameter Operate Point TLE4976-1H Release Point TLE4976-1H Hysteresis TLE4976-1H Temperature Compensation of Magnetic Thresholds Symbol BOP Tj [C] -40 25 150 -40 25 150 -40 25 150 min. 5.5 5.5 5.5 5.0 5.0 5.0 0.5 0.5 0.5 typ. 9.25 9.25 9.25 7.25 7.25 7.25 2.0 2.0 2.0 0 max. 11.0 11.0 11.0 mT 10.5 10.5 10.5 mT 3.0 3.0 3.0 ppm/C Unit mT Conditions BRP BHYS TC Positive magnetic fields related with south pole of magnet to the branded side of package. Note: Typical characteristics specify mean values expected over the production spread. Data Sheet 5/9 2003-11-20 TLE4976-1H Timing Diagram A p p lie d m a g n e tic fie ld B OP B RP IS 90% 10% tr td tf td Figure 3: Timing Definition Figure 4: Output Signal Data Sheet 6/9 2003-11-20 TLE4976-1H Package Dimensions 3 0.1 3 x 0.4 +0.05 -0.1 1.1 0.1 0.1 M 0.1 0.45 0.15 0.15 MAX. 2.8 -0.1 1 0.95 2 0.95 (0.55) 0.1 M +0. 0.15 -0.01 5 0...8 MAX. Figure 5: Package Dimension Figure 6: Foot print (SOT-23 compatible) Data Sheet 7/9 2003-11-20 1.6 -0.3 +0.15 3 +0. 2 TLE4976-1H Figure 7: Distance from Package to Die Figure 8: Marking Data Sheet 8/9 2003-11-20 TLE4976-1H TLE4976-1H Revision History: Version 1.0 Previous Version: Page Subjects (major changes since last revision) 2003-11-20 For questions on technology, delivery and prices please contact the Infineon Technologies Offices in Germany or the Infineon Technologies Companies and Representatives worldwide: see our webpage at http://www.infineon.com We Listen to Your Comments Any information within this document that you feel is wrong, unclear or missing at all? Your feedback will help us to continuously improve the quality of this document. Please send your proposal (including a reference to this document) to: feedback.sensors@infineon.com Edition 2001-02-22 Published by Infineon Technologies AG St.-Martin-Strasse 53 D-81541 Munchen (c) Infineon Technologies AG 2000 All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as warranted characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of noninfringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. 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 (see address list). 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 life-support 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. Data Sheet 9/9 2003-11-20 |
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