A3425 Allegro MicroSystems, A3425 Datasheet

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A3425

Manufacturer Part Number
A3425
Description
DUAL/ CHOPPER-STABILIZED/ ULTRA-SENSITIVE/ BIPOLAR HALL-EFFECT SWITCH
Manufacturer
Allegro MicroSystems
Datasheet

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V
CC
1
DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE,
2
3
-40 C to +150 C
-65 C to +170 C
Dwg. PH-017
See Graph
Unlimited
4
100 mA
+170 C
-50 mA
30 mA
26.5 V
-18 V
V
CC
3425
digital-encoder systems in the harsh environments of automotive or
industrial applications
hurdles encountered in fine-pitch direction-detection applications,
namely maintaining accurate mechanical location between the two active
Hall elements. Here, the two Hall elements are photolithographically
aligned to better than 1 m, as contrasted with 100 m or worse me-
chanical location tolerance when manufactured discretely. The
A3425LK is an ultra-sensitive device optimized for use with high-
density ring magnets.
independent
I
I
I
I
I
I
I
I
I
Two Matched Hall Switches On A Single Substrate
BIPOLAR HALL-EFFECT SWITCH
This device also eliminates the major manufacturing
use in

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A3425 Summary of contents

Page 1

... Hall elements. Here, the two Hall elements are photolithographically aligned to better than contrasted with 100 m or worse me- chanical location tolerance when manufactured discretely. The A3425LK is an ultra-sensitive device optimized for use with high- density ring magnets. independent I ...

Page 2

DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH Dwg. FH-020-7 1.0 0.8 0.6 0.4 FREE AIR 177 C/W JA 0 AMBIENT TEMPERATURE SUPPLY TO ALL REG. ...

Page 3

DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH 3425 ...

Page 4

DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH OPERATE POINT -10 -15 RELEASE POINT -20 -25 -50 - AMBIENT TEMPERATURE IN C 300 200 100 ...

Page 5

AMBIENT TEMPERATURE IN C Allegro DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH 3 5- ...

Page 6

DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH ...

Page 7

Magnetic Hall Sensor Using Dynamic Quadrature Offset Cancellation Stabilized Amplifiers With A Track-and-Hold Signal Demodulator DUAL, CHOPPER-STABILIZED, BIPOLAR HALL-EFFECT SWITCH +V Monolithic Chopper ULTRA-SENSITIVE, REG X B — HALL VOLTAGE + Dwg. AH-011 ...

Page 8

DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH +B B OP1 - OP2 B RP2 -B OUT E1 OUT E2 circuitry can be used to determine the direction of move- ment of the magnetic field across the face of ...

Page 9

Operating characteristics are limited by allowable package power dissipation ( function of ambient tempera- D ture (T ), which is defined by the maximum internal A junction temperature (T = 170 C) and the package J thermal ...

Page 10

DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH 0.208 0.203 45 0.138 0.133 0.085 MAX 0.600 0.560 SEE NOTE 0.0189 0.050 0.0142 BSC 0.095 0.005 0.002 MAX 0 –8 0.004 0.020 MAX MIN FLAT 0.063 45 0.059 ...

Page 11

DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH 3425 ...

Page 12

... Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current ...

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