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| s s s s s s Chopper Stabilized Amplifier Stage CMOS for Optimum Stability, Quality and Cost Dual Output 4.5V to 28V Operation Phase/Direction Detection (B) Pulse Doubling Output (C) s s s s Direction Detector Speed Sensor Shaft Encoding Position Sensing Part No. MLX90224 A MLX90224 B MLX90224 C Temperature Suffix L L L Package VA VA VA Temperature Range -40oC to 150oC Automotive -40oC to 150oC Automotive -40oC to 150oC Automotive 1 Voltage Regulator V DD The MLX90224 series are dual Hall effect latches. It includes two Hall effect latch functions of which typical thresholds are +/- 2.0 mT. In each latch, 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 MLX90224 A, C output transistor will be "latched 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 "latched off" (BRP) in the presence of a North field. Spacing on the plates is 1.85mm. The MLX90224 B series are designed for direction detection with a high speed chopper which provides 15s delay. Replaced with Logic for MLX90224 B 2 Chopper OUTPUT 1 4 Chopper OUTPUT 2 3 GND Note: Static sensitive device, please observe ESD precautions. MLX90224 Dual Hall Effect Latch Rev 1.2 8/May/99 Page 1 DC Operating Parameters TA = -40oC to 150oC, VDD = 4.5V to 28V (Unless otherwise specified) ! " $ & & & & '( ) '( '( ) '( ! "# $ % # , - ". / !*+ !*+ " " 0 , " 0 *" "" DC Operating Parameters TA = -40oC to 150oC, VDD = 4.5V to 28V (Unless otherwise specified) ! " & & & & & & '( ) '( '( ) '( '( ) '( 2 3 3 1 2 1 / / / / / / #$1mT=10Gauss Melexis Inc. reserves the right to make changes without further notice to any products herein to improve reliability, function or design. Melexis does not assume any liability arising from the use of any product or application of any product or circuit described herein. MLX90224 Dual Hall Effect Latch Rev 1.2 8/May/99 Page 2 % & Typical Magnetic Switch Points versus Supply Voltage 5 Typical Magnetic Switch Points versus Supply Voltage 50 90224 A, B 90224 C 3 B OP 30 B OP 10 0 -10 B RP -30 Flux Density (mT) 1 0 -1 B RP -3 -5 0 5 10 15 20 25 30 Flux Density (mT) -50 0 5 10 15 20 25 30 Supply Voltage (V) Supply Voltage (V) Typical Supply Current versus Supply Voltage 10 Typical Saturation Voltage versus Temperature V DD = 12 V, I OUT = 20mA 90224 500 90224 8 400 Supply Current (mA) T A = -40 oC 6 T A = 25 oC T A = 125 oC 4 VDS(ON) (mV) 300 V DS(ON) 200 2 100 0 0 5 10 15 20 25 30 0 -40 0 40 80 120 o 160 200 Supply Voltage (V) Temperature ( C) MLX90224 Dual Hall Effect Latch Rev 1.2 8/May/99 Page 3 % & Typical Magnetic Switch Points versus Temperature 5 Typical Magnetic Switch Points versus Temperature 50 90224 A, B 90224 C 3 B OP 30 Flux Density (mT) Flux Density (mT) B OP 10 0 -10 B RP 1 0 -1 B RP -3 -30 -5 -40 0 40 80 120 160 200 -50 -40 0 40 80 120 160 200 Temperature ( o C) Temperature ( o C) Output Voltage versus Flux Density 25 VDD Output Voltage versus Flux Density 90224 A, B 25 VDD 90224 C 20 20 Output Voltage (V) 15 B RP 10 BOP Output Voltage (V) 15 B RP 10 BOP 5 5 V sat 0 -6 -4 -2 0 2 4 6 0 -60 -40 -20 0 20 V sat 40 60 Flux Density (mT) Flux Density (mT) MLX90224 Dual Hall Effect Latch Rev 1.2 8/May/99 Page 4 % & Min/Max Magnetic Switch Range versus Temperature 5 Min/Max Magnetic Switch Range versus Temperature 50 90224 A, B Only 90224 C 3 B OP M a x 30 B OP M a x Flux Density (mT) Flux Density (mT) B OP M i n 10 0 -10 B RP M i n 1 0 -1 B OP M i n B RP M i n B RP M a x -3 -30 B RP M a x -5 -40 0 40 80 120 160 200 -50 -40 0 40 80 120 160 200 Temperature ( o C) Temperature ( o C) Power Dissipation versus Temperature 500 Wave Soldering Parameters All Devices 280 All Devices Package Power Dissipation (mW) 400 260 300 Solder Temperature (oC) VA Package R JA =175 oC / W -40 0 40 80 120 160 200 240 200 220 100 200 0 0 5 10 15 20 25 30 Temperature ( o C) Time in Wave Solder (Seconds) MLX90224 Dual Hall Effect Latch Rev 1.2 8/May/99 Page 5 & The MLX 90224 Speed and Direction Sensor is designed for use with Multipole ring magnet targets having evenly distributed North and South magnetic poles on the circumference of the magnet. An example of the basic physical arrangement of the sensor and magnet is shown in Fig. 1. The MLX90224 is available in 3 versions. The first version will provide 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 output identical in pulse width and period to S1. This version is referred to as MLX90224 A. The MLX90224 B version will provide an output signal that decodes the phase shifted signals to directly provide an output for the speed which is twice the natural frequency of the alternating magnetic field from the pole spacing of the multipole ring magnet. The other output pin will represent the direction and will change from logic high to logic low when the direction of rotation of the magnet is reversed. This then allows to directly see the condition of the speed with twice the resolution of the MLX90224 A and to also know directly the direction of rotation of the target. The third version of this product the MLX90224 C will be identical in function of the A but with less sensitive magnetic switch points. The MLX90224 A has Latching magnetic Bop and Brp values of typically +/- 2mT as does the internal circuitry of the B. The C version has also Latching magnetic trip points but with the thresholds set to +/- 25mT. +, N S N Fig. 1 S N '( The MLX90224LVA can replace the following Hall effect devices: Allegro A3421KA /A3422KA )*( 4 5) , 6 " 0 # ) 7 7 ) 08 9"" ) 0 / , ) / / , ) / & = ># / ) / @9 "6 3 3 3: 2; ; 2<; <; ?1; ?A2 1B Multipole Ring Magnet and MLX90224BA or BC Sensor S1 Sensor S2 Digital Output S1 Digital Output S2 Flux Density 0 50 100 150 200 250 300 350 Degrees of Rotation MLX90224 Dual Hall Effect Latch Rev 1.2 8/May/99 Page 6 # Severe Environment and Automotive Protection Circuit V DD R1 MLX 90224 R1 R1 MLX 90224 R2 Controller C2 RL RL C1 Microcontroller Application Schematic with EMC Protection Output Output C1 C2 C2 R1 R2 C1 C2 = 5.6k = 3 3 2 = 10nF = 2.2nF C2 R L =3.3 k R 1 =100 C 1 = 10nf C 2 = 2.2nf Direction-Detection Circuit S N S N S N S N S N S N S N S N 0 -B N S N S N S N S -B +B 0 Timing Diagram B OP1 CHANGE IN DIRECTION B R P1 +B B OP2 B RP2 MLX90224 B Clock Input Positive Edge Triggered D Flip Flop D Input Latch Output 1 Latch Output 2 Direction Output DC Level DIRECTION SPEED MLX90224 Dual Hall Effect Latch Rev 1.2 8/May/99 Page 7 % , ' 5.33 5.43 5.08 5.24 45 o 1.22 1.32 3.76 3.86 4.50 4.10 45 o X 1mm Bevel A B C 2.180 Hall Plates 0.25 x 0.25 VA Package Dimensions VA Hall Plate / Chip Location 3.615 2.69 1.765 2.700 1.700 0.387 0.289 9836 * 24A88 0.40 0.60 0.35 0.25 0.10 0.00 1 2 3 4 0.22 REF 1.0 MAX 5o (2x) 0.387 0.289 5o (2x) 3.46 3.79 3.30 3.63 D Marked Surface All Dimensions in millimeters E A 15.50 14.50 1.20 1.10 0.66 0.61 0.29 0.24 45 o 0.31 0.18 B C 18.5 17.5 0.45 0.35 D E * MARKING: Line 1: 1 st and 2nd digits (98) 3rd and 4th digits (36) Line 2: 1st and 2nd digits (15) 3rd digit (A) 4th and 5th digits(88) = Year (1998 ) = Week of Year Tape Line = Chip I.D. (9022 4 ) = Chip Revision = Lot Number VA Tape Dimensions PINOUT: P in 1 Pin 2 Pin 3 Pin 4 38.00 MAX V DD Output 1 GND Output 2 0.40 0.25 18.5 17.5 6.39 6.31 NOTES: 1.) Controlling dimension: mm 2.) Leads must be free of flash and plating voids 3.) Leads must not arc toward the rear of package 4.) Lead frame material: EFTEC 64T 5.) Molding compound: Sumitomo EME 6300H 6.) Package dimensions exclude molding flash 7.) Tolerance is 0.254mm unless otherwise specified 1.00 0.00 24.3 23.3 13.00 12.40 4.30 3.70 9.76 8.95 For more information, please contact: Melexis, Inc. 41 Locke Road Concord, NH 03301 Phone: (603) 223-2362 E-mail: sales@melexis.com Web: www.melexis.com MLX90224 Dual Hall Effect Latch Fax: (603) 223-9614 5.60 6.50 0.60 0.40 Rev 1.2 8/May/99 Page 8 |
Price & Availability of MLX90224C
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