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| MLX90224 Dual Hall Effect Switch Features and Benefits Chopper Stabilized Amplifier Stage CMOS for Optimum Stability, Quality and Cost Dual Output 5V to 24V Operation Phase/Direction Detection (option code B) Applications Direction Detector Speed Sensor Shaft Encoding Position Sensing Ordering Information Part No. MLX90224 MLX90224 Temperature Suffix E (-40C to 85C) E (-40C to 85C) Package Code VA VA Option code A B 1. Functional Diagram 1 Voltage Regulator Replaced with Logic for MLX90224 B 2. Description The MLX90224 series are dual Hall effect switches. It includes two Hall effect switch functions of which typical thresholds are +/- 2.0 mT. In each switch, the magnetic flux detection is performed by a switched silicon Hall plate. The BOP and BRP are temperature-compensated and give a sensitivity temperature coefficient of 500 ppm/oC to compensate popular magnets. The MLX90224LVAA output transistor will be "switched on" (BOP) in the presence of a sufficiently strong South pole magnetic field facing the marked side of the package. Similarly, the output will be "switched off" (BRP) in the presence of a North field. Spacing on the plates is 1.85mm. The MLX90224LVAB serie is designed for direction detection with a high speed chopper. 2 Chopper 4 Chopper 3 MLX90224EVA-A Pin 1 Pin 2 Pin 3 Pin 4 VDD Switch Plate 1 GND Switch Plate 2 MLX90224EVA-B VDD Speed GND Direction The output structure is an Open-Drain NMOS transistor with a capability of 25 mA. 3901090224 Rev. 005 Page 1 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch TABLE OF CONTENTS FEATURES AND BENEFITS ....................................................................................................................... 1 APPLICATIONS............................................................................................................................................ 1 ORDERING INFORMATION......................................................................................................................... 1 1. 2. 3. 4. 5. 6. 7. 8. 9. FUNCTIONAL DIAGRAM................................................................................................................... 1-1 DESCRIPTION.................................................................................................................................... 2-1 GLOSSARY OF TERMS ....................................................................................................................... 3 ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 3 MLX90224 ELECTRICAL SPECIFICATIONS ...................................................................................... 3 MLX90224 SENSOR SPECIFIC SPECIFICATIONS ............................................................................ 4 GENERAL DESCRIPTION .................................................................................................................... 4 PERFORMANCE GRAPHS................................................................................................................... 5 APPLICATIONS INFORMATION .......................................................................................................... 6 10. RELIABILITY INFORMATION............................................................................................................... 8 11. ESD PRECAUTIONS............................................................................................................................. 8 12. PACKAGE INFORMATION................................................................................................................... 9 13. DISCLAIMER ....................................................................................................................................... 10 3901090224 Rev. 005 Page 2-2 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch 3. Glossary of Terms Gauss, Tesla: Two units to quantify a magnetic flux density. Conversion: 1 mT = 10 Gauss Bop: B Operating Point: When the magnetic flux density increases and reaches the Bop value, the output switches on. This value is in Gauss. Brp: B Release Point: When the magnetic flux density decreases and reaches the Brp value, the output switches off. This value is in Gauss. 4. Absolute Maximum Ratings Supply Voltage, VDD Supply Current, IDD Output Current, IOUT Output Short-Circuit Current Operating Temperature Range, TA Storage Temperature Range, TS Maximum Junction Temp, TJ Magnetic Flux Density 24 V 50 mA 40 mA 150 mA -40C to 150C -65C to 150C + 175C Infinite Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolutemaximum-rated conditions for extended periods may affect device reliability. 5. MLX90224 Electrical Specifications DC Operating Parameters TA = -40oC to 85oC, VDD = 5V to 24V (unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units Supply Voltage Supply Current Output Current Saturation Output Voltage Output Voltage Output Leakage Refresh Time VDD IDD IOUT VSAT VOUT ILEAK Tr Operating B>BOP B>BOP, IOUT=20 mA B 24 10 20 600 24 10 V mA mA mV V A S 7 15 3901090224 Rev. 005 Page 3 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch 6. MLX90224 Sensor Specific Specifications DC Operating Parameters TA = -40oC to 85oC, VDD = 5V to 24V (unless otherwise specified) Parameter Operate Point Release Point Hysteresis Symbol BOP BRP BHYS Test Conditions Min -5.5 1.0 Typ 2.5 -2.5 4.0 Max 5.5 7.5 Units mT mT mT Note: 1 mT = 10 Gauss 7. General Description The MLX 90224 is designed for use with multipole ring magnet targets having evenly distributed North and South magnetic poles on the circumference of the target. An example of the basic physical arrangement of the sensor and magnet is shown in Fig. 1. The MLX90224 is available in 2 versions. The first version provides the user with two digital output signals. Output S1 will provide a speed pulse from the changing magnetic flux at sensing element S1. Output S2 will provide a phase shifted (d = 1.85 mm) output identical in pulse width and period to S1. This version is referred to as MLX90224LVAA. The MLX90224LVAB version provides an output signal that decodes the phase shifted signals to directly provide an output for the speed which is twice the rotation speed of the target. The other output pin represent the direction and changes from logic-high to logic-low when the direction of rotation of the magnet is reversed. It allows to directly see the condition of the speed with twice the resolution of the MLX90224LVAA and to also know directly the direction of rotation of the target. The MLX90224LVAA has switching magnetic Bop and Brp values of typically +/- 2.5 mT as does the internal circuitry of the LVAB. N S N SNSNS S NSNS NS N S N S N SNSNS N N N S S N Figure 1: Application with a multipole ring magnet 3901090224 Rev. 005 Page 4 of 10 S NSNS NS N S Data Sheet July/03 MLX90224 Dual Hall Effect Switch 8. Performance Graphs Typical Magnetic Switch Points versus Temperature 5 Output Voltage versus Flux Density 25 VDD 90224 A, B 90224 A, B 3 BOP 20 Flux Density (mT) Output Voltage (V) 1 0 -1 BRP -3 15 BRP 10 BOP 5 Vsat -5 -40 0 40 80 120 o 0 160 200 -6 -4 -2 0 2 4 6 Temperature ( C) Flux Density (mT) Typical Supply Current versus Supply Voltage 10 90224 Typical Saturation Voltage versus Temperature VDD = 12 V, IOUT = 20mA 500 90224 8 400 Supply Current (mA) TA = -40oC VDS(ON) (mV) 6 TA = 25oC TA = 85 oC 300 VDS(ON) 200 4 2 100 0 0 5 10 15 20 25 30 0 -40 0 40 80 120 160 200 Supply Voltage (V) Temperature (oC) 3901090224 Rev. 005 Page 5 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch 9. Applications Information Severe Environment and Automotive Protection Circuit VDD R1 R2 MLX 90224 R3 Output Output C1 C2 C2 R1, R2 = 5.6k R3 = 332 C1 = 10nF C2 = 2.2nF In severe cases it may be necessary to include a Zener diode to clamp positive interference and Schottky diodes to clamp negative excursions. 3901090224 Rev. 005 Page 6 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch Timing diagram when applied a B1-B2 quadratic magnetic field on MLX90224, LVAA version 60 Magnetic Field (G) 40 B1 B2 20 Bop 0 -20 Brp -40 Out 1 Out 2 0 20 40 60 80 100 120 140 160 180 200 time (ms) Timing diagram when applied a B1-B2 quadratic magnetic field on MLX90224, LVAB version (direction and speed outputs) Magnetic Field (G) 50 Bop 0 B1 B2 Brp Signal from Plate 1 Signal from Plate 2 Speed output Direction output 0 50 100 150 200 time 250 300 350 400 -50 3901090224 Rev. 005 Page 7 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch 10. Reliability Information Melexis devices are classified and qualified regarding suitability for infrared, vapor phase and wave soldering with usual (63/37 SnPb-) solder (melting point at 183degC). The following test methods are applied: IPC/JEDEC J-STD-020A (issue April 1999) Moisture/Reflow Sensitivity Classification For Nonhermetic Solid State Surface Mount Devices CECC00802 (issue 1994) Standard Method For The Specification of Surface Mounting Components (SMDs) of Assessed Quality MIL 883 Method 2003 / JEDEC-STD-22 Test Method B102 Solderability For all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with Melexis. The application of Wave Soldering for SMD's is allowed only after consulting Melexis regarding assurance of adhesive strength between device and board. For more information on manufacturability/solderability see quality page at our website: http://www.melexis.com/ 11. ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 3901090224 Rev. 005 Page 8 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch 12. Package Information 5.33 5.43 5.08 5.24 J 1.22 1.32 3.76 3.86 VA Package Dimensions VA Hall Plate / Chip Location Hall Plates 0.25 x 0.25 3.615 2.69 1.765 2.700 4.50 4.10 45 o X 1mm 5o 5o (2x) A B C 1.700 0.387 0.289 2.180 224XA ZZZZZ F G H 1.0 MAX 0.22 REF A VA 1.20 1.10 0.66 0.61 0.29 0.24 45 o (2x) 3. 46 0.387 0.289 D 3 .79 3 .63 3. 30 Marked Surface All Dimensions in millimeters E B 1 2 3 4 C 15.50 14.50 D E 0.31 0.18 0.60 0.40 0.35 0.25 0.15 0.0 45 o F 0.45 0.35 G H J Pin 1 Vdd Latch Plate 1/ Speed Pin 2 Pin 3 GND Pin 4 Latch Plate 2 / Direction 2. Controlling dimension: mm . 3. Leads must be free of flash and plating voids. 4. Leads must not arc toward the rear of package. 5. Package dimensions exclude molding flash. 6. Tolerance: +/- 0.254 mm unless otherwise specified. 7. Marking: Line 1: 3 first digits (224) =Part Number MLX90224 4th and 5th digits (XA) = Version A (double latch) (XB) = Version B (Speed-Direction) Line 2: 5 digits (ZZZZZ) =Lot Number Notes: 1. Pinout: Back Side Marking 4 digits (WWYY) =Date Code 3901090224 Rev. 005 Page 9 of 10 Data Sheet July/03 MLX90224 Dual Hall Effect Switch 13. Disclaimer Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis' rendering of technical or other services. (c) 2002 Melexis NV. All rights reserved. For the latest version of this document, go to our website at: www.melexis.com Or for additional information contact Melexis Direct: Europe and Japan: Phone: +32 13 67 04 95 E-mail: sales_europe@melexis.com All other locations: Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com 3901090224 Rev. 005 Page 10 of 10 Data Sheet July/03 QS9000, VDA6.1 and ISO14001 Certified |
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