TLE4921-5U

D ata Sheet, V 1.1, January 2008 TLE4921-5U Dynamic Differential Hall Effect Sensor IC Sensors Never stop thinking. Edition 2008-01 Published by Infineon Technologies AG, St.-Martin-Strasse 53, 81669 München, Germany © Infineon Technologies AG 2008. 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 (www.infineon.com). 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. TLE4921-5U Revision History: Previous Version: Page 5 11 20 21 2008-01 V1.0 V 1.1 Subjects (major changes since last revision) Ordering Code changed “Output leakage current” unit corrected Figures “Delay Time between Switching Threshold” exchanged and corrected Figure “Delay Time versus Differential Field” corrected 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: sensors@infineon.com Template: mc_a5_ds_tmplt.fm / 4 / 2004-09-15 TLE4921-5U Table of Contents 1 1.1 1.2 2 2.1 2.2 2.3 3 4 5 6 7 8 Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin Configuration (view on branded side of component) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit Description (see Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 8 8 Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Electrical and Magnetic Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Application Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Data Sheet 4 V 1.1, 2008-01 Dynamic Differential Hall Effect Sensor IC TLE4921-5U Bipolar IC 1 1.1 • • • • • • • • • • • • • • • Overview Features Advanced performance High sensitivity Symmetrical thresholds High piezo resistivity Reduced power consumption South and north pole pre-induction possible AC coupled Digital output signal Two-wire and three-wire configuration possible Large temperature range Large airgap Low cut-off frequency Protection against overvoltage Protection against reversed polarity Output protection against electrical disturbances The differential Hall Effect sensor TLE4921-5U provides a high sensitivity and a superior stability over temperature and symmetrical thresholds in order to achieve a stable duty cycle. TLE4921-5U is particularly suitable for rotational speed detection and timing applications of ferromagnetic toothed wheels such as anti-lock braking systems, transmissions, crankshafts, etc. The integrated circuit (based on Hall effect) provides a digital signal output with frequency proportional to the speed of rotation. Unlike other rotational sensors differential Hall ICs are not influenced by radial vibration within the effective airgap of the sensor and require no external signal processing. Type TLE4921-5U Data Sheet Marking 215U 5 Ordering Code SP000013593 Package PG-SSO-4-1 V 1.1, 2008-01 TLE4921-5U Overview 1.2 Pin Configuration (view on branded side of component) B A 1.53 2.67 2.5 0.2 B Center of sensitive area 1 2 3 4 0.2 A VS Q GND C AEP01694 Figure 1 Table 1 Pin No. 1 2 3 4 Pin Definitions and Functions Symbol Function Supply voltage Output Ground Capacitor VS Q GND C Data Sheet 6 V 1.1, 2008-01 TLE4921-5U General 2 2.1 General Block Diagram VS 1 Protection Device Internal Reference and Supply VREG (3V) Hall-Probes SchmittTrigger Protection Open Collector Device 2 Amplifier HighpassFilter Q 3 GND 4 CF AEB01695 Figure 2 Block Diagram Data Sheet 7 V 1.1, 2008-01 TLE4921-5U General 2.2 Functional Description The Differential Hall Sensor IC detects the motion and position of ferromagnetic and permanent magnet structures by measuring the differential flux density of the magnetic field. To detect ferromagnetic objects the magnetic field must be provided by a back biasing permanent magnet (south or north pole of the magnet attached to the rear unmarked side of the IC package). Using an external capacitor the generated Hall voltage signal is slowly adjusted via an active high pass filter with a low cut-off frequency. This causes the output to switch into a biased mode after a time constant is elapsed. The time constant is determined by the external capacitor. Filtering avoids ageing and temperature influence from Schmitttrigger input and eliminates device and magnetic offset. The TLE4921-5U can be exploited to detect toothed wheel rotation in a rough environment. Jolts against the toothed wheel and ripple have no influence on the output signal. Furthermore, the TLE4921-5U can be operated in a two-wire as well as in a three-wireconfiguration. The output is logic compatible by high/low levels regarding on and off. 2.3 Circuit Description (see Figure 2) The TLE4921-5U is comprised of a supply voltage reference, a pair of Hall probes spaced at 2.5 mm, differential amplifier, filter for offset compensation, Schmitt trigger, and an open collector output. The TLE4921-5U was designed to have a wide range of application parameter variations. Differential fields up to ± 80 mT can be detected without influence to the switching performance. The pre-induction field can either come from a magnetic south or north pole, whereby the field strength up to 500 mT or more will not influence the switching points. The improved temperature compensation enables a superior sensitivity and accuracy over the temperature range. Finally the optimized piezo compensation and the integrated dynamic offset compensation enable easy manufacturing and elimination of magnet offsets. Protection is provided at the input/supply (pin 1) for overvoltage and reverse polarity and against over-stress such as load dump, etc., in accordance with ISO-TR 7637 and DIN 40839. The output (pin 2) is protected against voltage peaks and electrical disturbances. Data Sheet 8 V 1.1, 2008-01 TLE4921-5U Maximum Ratings 3 Table 2 Parameter Maximum Ratings Absolute Maximum Ratings Tj = -40°C to 150°C Symbol min. Limit Values max. 30 30 50 50 3 150 160 170 210 150 190 °C K/W V V mA mA V °C 5000 h 2500 h 1000 h 40 h -35 1) -0.7 – – -0.3 – – – – Unit Remarks Supply voltage Output voltage Output current Output reverse current Capacitor voltage Junction temperature VS VQ IQ -IQ VC Tj Storage temperature Thermal resistance PG-SSO-4-1 TS RthJA -40 – Current through ISZ input-protection device Current through IQZ output-protection device 1) Reverse current < 10 mA – 200 mA t < 2 ms; v = 0.1 t < 2 ms; v = 0.1 – 200 mA Data Sheet 9 V 1.1, 2008-01 TLE4921-5U Operating Range 4 Table 3 Operating Range ESD Protection Human Body Model (HBM) tests according to: Standard EIA/JESD22-A114-B HBM Symbol min. – Limit Values max. ±2 kV Unit Remarks Parameter ESD - protection VESD Table 4 Parameter Supply voltage Junction temperature Pre-induction Operating Range Symbol min. Limit Values typ. – – – – – max. 24 150 160 170 500 mT V °C 5000 h 2500 h 1000 h at Hall probe; independent of magnet orientation 4.5 -40 – – Unit Remarks VS Tj B0 ∆B -500 Differential induction -80 – 80 mT Note: In the operating range the functions given in the circuit description are fulfilled. Data Sheet 10 V 1.1, 2008-01 TLE4921-5U Electrical and Magnetic Parameters 5 Table 5 Parameter Electrical and Magnetic Parameters Electrical Characteristics Symbol min. Limit Values typ. 5.3 5.9 0.25 max. 8.0 8.8 0.6 mA mA V 3.8 4.3 Unit Test Condition Test Circuit 1 1 1 Supply current IS Output saturation voltage Output leakage current VQSAT IQL – VQ = high IQ = 0 mA VQ = low IQ = 40 mA IQ = 40 mA VQ = 24 V -20 mT < ∆B < 20 mT 1) 2) f = 200 Hz – -1 – 0 50 1 µA mT 1 2 Center of ∆Bm switching points: (∆BOP + ∆BRP) / 2 Operate point Release point Hysteresis ∆BOP ∆BRP ∆BH – 0 0.5 – – 1.5 0 – 2.5 mT mT mT f = 200 Hz, ∆B = 20 mT f = 200 Hz, ∆B = 20 mT f = 200 Hz, ∆B = 20 mT 2 2 2 Overvoltage protection at supply voltage VSZ VQZ at output Output rise time Output fall time Delay time 27 27 – – – – – 35 – – – – – – 0 43 35 35 0.5 0.5 25 10 15 52 V V µs µs µs µs µs kΩ tr tf tdop tdrp tdop - tdrp RC IS = 16 mA IQ = 16 mA IQ = 40 mA CL = 10 pF IQ = 40 mA CL = 10 pF f = 10 kHz ∆B = 5 mT 25°C ±2°C 1 1 1 1 2 Filter input resistance 1 Data Sheet 11 V 1.1, 2008-01 TLE4921-5U Electrical and Magnetic Parameters Table 5 Parameter Filter sensitivity to ∆B Filter bias voltage Frequency Resistivity against mechanical stress (piezo) Electrical Characteristics (cont’d) Symbol min. Limit Values typ. -5 2 – – – max. – 2.4 20000 0.1 0.1 – 1.6 3) Unit Test Condition Test Circuit 1 1 2 2 4) SC VC f ∆Bm ∆BH mV/mT – V Hz mT mT ∆B = 0 ∆B = 5 mT F=2N -0.1 -0.1 1) The Current consumption characteristic will be different and the specified values can slightly change 2) Leakage currents at pin 4 should be avoided. The bias shift of Bm caused by a leakage current IL can be IL × RC ( T ) calculated by: ∆ B m = ---------------------------SC ( T ) 3) For higher ∆B the values may exceed the limits like following | ∆Bm | < | 0.05 × ∆B | 1 4) Depends on filter capacitor CF. The cut-off frequency is given by f = --------------------------------- . The switching points are 2 π × RC × CF guaranteed over the whole frequency range, but amplitude modification and phase shift due to the 1st order highpass filter have to be taken into account. Note: The listed characteristics are ensured over the operating range of the integrated circuit. Typical characteristics specify mean values expected over the production spread. If not otherwise specified, typical characteristics apply at Tj = 25°C and the given supply voltage. Data Sheet 12 V 1.1, 2008-01 TLE4921-5U Electrical and Magnetic Parameters RP 300 Ω VSZ 1 IS VS RL IQ , IQR VLD 4.7 nF VS IC1) 4 C TLE4921-5U Q 2 VC GND 3 VQSAT, VQZ CL 1) RC = ∆VC ∆ IC AES01696 Figure 3 Test Circuit 1 1 VS 1 kΩ 2 f min f max ∆ BOP ∆ BHy AES01258 VS 4 C TLE4921-5U Q VQ CF 470 nF GND 3 Figure 4 Test Circuit 2 Data Sheet 13 V 1.1, 2008-01 TLE4921-5U Application Configurations 6 Application Configurations Two possible applications are shown in Figure 7 and Figure 8 (Toothed and Magnet Wheel). The difference between two-wire and three-wire application is shown in Figure 9. Gear Tooth Sensing In the case of ferromagnetic toothed wheel application the IC has to be biased by the south or north pole of a permanent magnet (e.g. SmCO5 (Vacuumschmelze VX145)) with the dimensions 8 mm × 5 mm × 3 mm) which should cover both Hall probes. The maximum air gap depends on: – the magnetic field strength (magnet used; pre-induction) and – the toothed wheel that is used (dimensions, material, etc.; resulting differential field) a centered distance of Hall probes b Hall probes to IC surface L IC surface to tooth wheel a = 2.5 mm b = 0.3 mm Figure 5 Sensor Spacing Conversion DIN – ASA N S b L a AEA01259 T d AEA01260 m = 25.4 mm/p T = 25.4 mm CP ASA diameter (mm) number of teeth module m = d/z (mm) pitch T = π × m (mm) Tooth Wheel Dimensions DIN d z m T Figure 6 p PD CP diameter pitch p circular pitch = z/d (inch) pitch diameter PD = z/p (inch) CP = 1 inch × π/p Data Sheet 14 V 1.1, 2008-01 TLE4921-5U Application Configurations Gear Wheel Hall Sensor 1 Hall Sensor 2 Signal Processing Circuitry S (N) N (S) Permanent Magnet AEA01261 Figure 7 TLE4921-5U, with Ferromagnetic Toothed Wheel Magnet Wheel S N Hall Sensor 1 S Hall Sensor 2 Signal Processing Circuitry AEA01262 Figure 8 Data Sheet TLE4921-5U, with Magnet Wheel 15 V 1.1, 2008-01 TLE4921-5U Application Configurations Two-wire-application Line 1 4 CF 470 nF VS C GND 3 VSIGNAL RS Q 2 RL VS Sensor for example : R L = 330 Ω R S = 120 Ω Mainframe AES01263 Three-wire-application Rp 1 VS C GND 3 Q Line RL 2 4.7 nF 4.7 nF VSIGNAL VS 4 CF 470 nF Sensor for example : R L = 330 Ω R P = 0 ... 330 Ω Mainframe AES01264 Figure 9 Application Circuits Data Sheet 16 V 1.1, 2008-01 TLE4921-5U Application Configurations N (S) S (N) 1 4 B1 Wheel Profile B2 Missing Tooth Magnetic Field Difference ∆ B = B2 _ B1 ∆ BRP = 0.75 mT Small Airgap Large Airgap ∆ BHYS ∆ BOP = _ 0.75 mT Output Signal VQ Operate point: B2 _ B1 < ∆ BOP switches the output ON (VQ = LOW) Release point: B2 _ B1 > ∆ BRP switches the output OFF (VQ = HIGH) ∆ BRP = ∆ BOP + ∆ BHYS The magnetic field is defined as positive if the south pole of the magnet shows towards the rear side of the IC housing. AED01697 Figure 10 System Operation Data Sheet 17 V 1.1, 2008-01 TLE4921-5U Typical Performance Characteristics 7 Typical Performance Characteristics Quiescent Current versus Temperature AED03167 AED03168 Quiescent Current versus Supply Voltage 10 mA IS 9 8 7 6 5 4 3 2 1 0 0 5 10 15 I Q = 40 mA 10 mA IS 9 8 7 I ON = 40 mA IS ON IS OFF 6 5 4 3 2 IS ON IS OFF IS Diff 20 V 25 1 0 -50 -10 30 IS Diff 70 110 150 ˚C 230 VS Tj Quiescent Current versus Output Current 10 mA IS 9 8 AED03169 Saturation Voltage versus Temperature VQ 400 mV AED03170 VS = 12 V VS = 4.5 V I Q = 50 mA 300 7 6 5 4 3 IS ON 250 200 150 100 2 1 0 0 10 20 30 40 mA 50 50 0 -50 0 50 100 150 ˚C 200 I OUT Data Sheet 18 Tj V 1.1, 2008-01 TLE4921-5U Typical Performance Characteristics Output Saturation Voltage versus IQ @ 25°C Tj 300 mV 200 Out Sat Voltage AED03171 Saturation Voltage versus Supply Voltage 0.40 V AED03172 I Q ±50 mA, VS = 4.5 V VQ I Q = 40 mA Tj = 25 ˚C 100 0 0.30 0.25 0.20 -100 0.15 -200 -300 -400 -60 0.10 0.05 0 -40 -20 0 20 mA 60 0 5 10 15 20 25 30 IQ VS Center of Switching Points versus Temperature 2 mT AED03173 Hysteresis versus Temperature AED03174 BM B M = ( B OP + B RP)/2 f = 200 Hz B Hy 4 mT B Hy = B RP - B OP f = 200 Hz 1 max 3 max 0 typ 2 typ -1 min 1 min -2 -60 -20 20 60 100 ˚C 180 0 -60 -20 20 60 100 ˚C 180 Tj Tj Data Sheet 19 V 1.1, 2008-01 TLE4921-5U Typical Performance Characteristics Minimum Switching Field versus Frequency 1.5 mT AED03175 Minimum Switching Field versus Frequency 1.5 mT AED03176 B min CF = 1 µF B min CF = 1 µF 1.0 1.0 Tj = -40 ˚C Tj = 25 ˚C 0.5 0.5 Tj = 170 ˚C Tj = 150 ˚C 0 -2 10 10-1 100 101 kHz 102 0 -2 10 10-1 100 101 kHz 102 f f Delay Time between Switching Threshold ∆B and Falling Edge of VOUT at Tj = 25°C 25 µs Delay Time between Switching Threshold ∆B and Rising Edge of VOUT at Tj = 25°C 25 µs ∆B = 2mT, f =200Hz ∆B = 2mT, f =200Hz t dop 20 t drp 20 15 15 10 10 ∆B = 2mT 5 ∆B = 2mT 5 ∆B = 5mT 0 0 5000 10000 15000 20000 Hz 25000 ∆B = 5mT 0 0 5000 10000 15000 20000 Hz 25000 f f Data Sheet 20 V 1.1, 2008-01 TLE4921-5U Typical Performance Characteristics Delay Time versus Differential Field Delay Time versus Temperature 8.5 µs 8.0 7.5 AED03180 t ∆ B = 2 mT, f = 200 Hz tdrp 7.0 6.5 6.0 5.5 5.0 -60 tdop -10 40 90 140 ˚C 190 T Rise and Fall Time versus Temperature AED03181 Rise and Fall Time versus Output Current 120 ns 100 AED03182 t 40 ns 35 I Q = 40 mA t Tj = 25 ˚C 30 tr 25 80 60 tf 20 40 tr tf 20 15 10 -50 0 50 100 150 ˚C 200 0 Tj 0 20 40 60 80 mA 100 I OUT Data Sheet 21 V 1.1, 2008-01 TLE4921-5U Typical Performance Characteristics Capacitor Voltage versus Temperature AED03183 Switching Thresholds versus Mechanical Stress 1.0 ∆ Brp , (∆ Bop ) 0.9 AED03184 VC 3.0 V 2.5 typ 2.0 Tj = 25 ˚C 0.8 max 1.5 min 0.7 1.0 0.5 0.6 0 -50 0 50 100 150 ˚C 200 0.5 0 1 2 3 4N5 Tj F Filter Sensitivity versus Temperature AED03185 Filter Input Resistance versus Temperature RC R C @ 25˚C 1.6 AED03186 0 mV/mT SC -1 -2 -3 -4 typ -5 -6 -7 -8 -9 -10 -50 0 50 100 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 150 ˚C 200 0.6 -50 0 50 100 150 ˚C 200 Tj Tj Data Sheet 22 V 1.1, 2008-01 TLE4921-5U Typical Performance Characteristics Delay Time for Power on (VS Switching from 0 V to 4.5 V) tpon versus Temp. 0.40 ms/nF AED03187 Periodjitter (1σ) versus Temperature AED03188 @ ∆ B = 10 mT k 0.30 0.50 % Jitter 0.40 0.35 f = 1 KHz, B P = 5 mT 0.25 0.20 0.15 0.10 0.05 0 -50 max typ min 0.30 0.25 0.20 0.15 0.10 0.05 0 50 100 150 ˚C 200 TLE4921-5U 0 -40 0 40 80 120 ˚C 200 T Tj Table 6 Parameter Testpulse 1 Testpulse 2 Testpulse 3a Testpulse 3b Testpulse 4 Testpulse 5 Electro Magnetic Compatibility ref. DIN 40839 part 1; test circuit 1 Symbol Level/Typ IV / – 100 V IV /100 V IV / – 150 V IV / 100 V IV / – 7 V IV / 86.5 V Status C B C C C C VLD 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. Data Sheet 23 V 1.1, 2008-01 TLE4921-5U Typical Performance Characteristics d Branded Side Hall-Probe d : Distance chip to branded side of IC P-SSO-4-1 : 0.3 ±0.08 mm AEA02712 Figure 11 Distance Chip to Upper Side of IC Data Sheet 24 V 1.1, 2008-01 TLE4921-5U Package Outlines 8 Package Outlines 5.34 ±0.05 5.16 ±0.08 0.2 2A 0.1 MAX. 12.7 ±1 1.9 MAX. CODE CODE 1 -0.1 0.25 ±0.05 7˚ 7˚ 1 x 45˚±1˚ CODE (14.8) (Useable Length) 3.38 ±0.06 3.71 ±0.08 1 MAX.1) (0.25) 0.6 MAX. 0.2 +0.1 38 MAX. 0.4 ±0.05 1 4 9 -0.5 1.27 3 x 1.27 = 3.81 18 ±0.5 A 6 ±0.5 +0.75 6.35 ±0.4 4 ±0.3 12.7 ±0.3 Total tolerance at 10 pitches ±1 Tape 0.25 -0.15 0.39 ±0.1 1) No solder function area GPO05357 Figure 12 PG-SSO-4-1 (Plastic Single Small Outline Package) You can find all of our packages, sorts of packing and others in our Infineon Internet Page “Products”: http://www.infineon.com/products. Data Sheet 25 Dimensions in mm V 1.1, 2008-01 1 -1 0.5 23.8 ±0.5 4x Adhesive Tape www.infineon.com Published by Infineon Technologies AG