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MLX90224中文资料

s Chopper Stabilized Amplifier Stage

s CMOS for Optimum Stability, Quality and Cost s Dual Output

s 4.5V to 28V Operation

s Phase/Direction Detection (B) s

Pulse Doubling Output (C)

s Direction Detector s Speed Sensor s Shaft Encoding s

Position Sensing

Part No. Temperature Suffix Package Temperature Range

MLX90224 A L VA -40o C to 150o C Automotive MLX90224 B L VA -40o C to 150o C Automotive MLX90224 C L VA -40o C to 150o C Automotive

The MLX90224 series are dual Hall effect latches. It includes two Hall effect latch functions of which typi-cal thresholds are +/- 2.0 mT. In each latch, the mag-netic flux detection is performed by a switched silicon Hall plate. The B OP and B RP are temperature-compen-sated and give a sensitivity temperature coefficient of 500 ppm/o C to compensate popular magnets.

The MLX90224 A, C output transistor will be “latched on” (B OP ) in the presence of a sufficiently strong South pole magnetic field facing the marked side of the pack-age. Similarly, the output will be “latched off” (B RP ) 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 15μs delay.

Note: Static sensitive device, please observe ESD precautions.

Voltage Regulator

Chopper

V DD

G N D

O U T P U T

Replaced with Logic for

MLX90224 B

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DC Operating Parameters TA = -40o C to 150o C, VDD = 4.5V to 28V (Unless otherwise specified) ! μ

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μ"

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DC Operating Parameters TA = -40o C to 150o C, VDD = 4.5V to 28V (Unless otherwise specified)

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# $ 1m T=10G a u s s

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.

F l u x D e n s i t y (m T )

Supply Voltage (V)Typical Magnetic Switch Points versus

Supply Voltage

90224 A, B 15

-3

-1

B OP

B RP

-5010

0S u p p l y C u r r e n t (m A )

Supply Voltage (V)Typical Supply Current versus

Supply Voltage

90224

810

T A = -40o C

T A = 25o C T A = 125o C

% &

500

0V D S (O N ) (m V )

Temperature (o C)

Typical Saturation Voltage versus

Temperature

V DD = 12 V, I OUT = 20mA

90224

100

200

300

400

-40

120

160

200

V DS(ON)

F l u x D e n s i t y (m T )

Supply Voltage (V)

Typical Magnetic Switch Points versus

Supply Voltage

90224 C

-30

-10

1030

B OP

B RP

-50

-50F l u x D e n s i t y (m T )

Temperature (o C)

Typical Magnetic Switch Points versus

Temperature

90224 C

-30

-10

1030

-40

120

160

200

B OP

B RP

-5F l u x D e n s i t y (m T )

Temperature (o C)Typical Magnetic Switch Points versus

Temperature

90224 A, B 80

-3

-1

-40

120

160

200

B OP

B RP

025

O u t p u t V o l t a g e (V )

Flux Density (mT)Output Voltage versus

Flux Density

90224 A, B

20-2

-4

-6

0V DD

V sat

B OP

B RP

% &

O u t p u t V o l t a g e (V )

Flux Density (mT)

Output Voltage versus

Flux Density

90224 C

-20

-40

-60

0V DD

V sat

B OP

B RP

-5F l u x D e n s i t y (m T )

Temperature (o C)Min/Max Magnetic Switch Range versus

Temperature

90224 A, B Only 80

-3

-1

-40

120

160

200

B OP Max

B OP Min

B RP Max

B RP Min

0280

S o l d e r T e m p e r a t u r e (o C )

Time in Wave Solder (Seconds)

Wave Soldering Parameters

All Devices

200

220

240

260

% &

500

P a c k a g e P o w e r D i s s i p a t i o n (m W )

Temperature (o C)Power Dissipation versus

Temperature

All Devices

100200300

4000

-40

120

160

200

VA Package R θJA =175o C /W

-50F l u x D e n s i t y (m T )

Temperature (o C)

Min/Max Magnetic Switch Range versus

Temperature

90224 C

-30

-10

1030

-40

120

160

200

B OP Max

B OP Min

B RP Max

B RP Min

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The MLX90224LVA can replace the following Hall effect devices: Allegro A3421KA /A3422KA

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4 5) 3 , 6 " 0 # 3 ) 7 7 ) 0 8 9 "" )0

3 : / , )/ 2 ; ; / , )/ 2< ; < ; & = > # / )/ ? 1 ; @ 9 " 6

?A21B

The MLX 90224 Speed and Direction Sensor is de-signed for use with Multipole ring magnet targets hav-ing 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 pro-vide 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 rota-tion of the magnet is reversed. This then allows to di-rectly see the condition of the speed with twice the resolution of the MLX90224 A and to also know di-rectly the direction of rotation of the target. The third version of this product the MLX90224 C will be iden-tical in function of the A but with less sensitive mag-netic 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 thresh-olds set to +/- 25mT.

Multipole Ring Magnet and MLX90224BA or BC

50100150200250300350

Degrees of Rotation

F l u x D e n s i t y

Sensor S1Sensor S2Digital Output S1Digital Output S2

N N

Fig. 1

Severe Environment and Automotive Protection Circuit

R1 = 5.6k ?R2 =332?C1 = 10nF C2 = 2.2nF

V DD

Output

MLX 90224

R1Output Direction-Detection Circuit

MLX90224 B

Positive Edge Triggered D Flip Flop

D Input

Clock Input

Direction Output

DC Level

N N N

N N

N N N N S

S S S

S S

S S S S

Microcontroller Application

Schematic

with EMC Protection

R L =3.3 k ?R 1 =100?C 1= 10nf C 2= 2.2nf

Controller

R L

R 1

C 1

MLX 90224

R L

C 2

Timing Diagram

C H A N G E I N

D I R

E C T I O N

0-B

+B 0-B

Latch Output 1

Latch Output 2

DIRECTION

B OP 1

B RP 1

B OP 2

B RP 2

SPEED

6.396.31

13.00

12.40

4.303.70

0.600.40

18.517.5

9.768.95

24.323.3

38.00M A X

5.60

6.500.400.251.000.00

All Dimensions in millimeters

VA Hall Plate / Chip Location

VA Package Dimensions

* MARKING:Line 1:

1st and 2nd digits (98)= Year (1998)3rd and 4th digits (36)= Week of Year

Line 2:

1st and 2nd digits (15)= Chip I.D. (90224)3rd digit (A)

= Chip Revision 4th and 5th digits(88)

= Lot Number

PINOUT:Pin 1V DD

Pin 2Output 1Pin 3G N D Pin 4

Output 2

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

18.517.5

3.463.30A B C

5o (2x)5o (2x)

0.3870.289

3.793.63D

0.400.60

0.350.25

0.100.00

1.0MAX

0.22REF

0.450.35

4.504.10

45o X 1mm Bevel

15.5014.50

Tape Line

983624A88

5.085.24

5.335.43

1.221.32

3.763.8645o

VA Tape Dimensions

1.201.100.660.610.290.2445o 0.310.18

B A

D E

2.180Hall Plates 0.25 x 0.25

2.690.3870.289

Marked Surface

1.700

2.700

1.765

3.615% , '

For more information, please contact:

Melexis, Inc.

41 Locke Road Concord, NH 03301 Phone: (603) 223-2362 Fax: (603) 223-9614 E-mail: sales@https://www.wendangku.net/doc/191727116.html, Web: https://www.wendangku.net/doc/191727116.html,