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A3046

Allegro MicroSystems
Part Number A3046
Manufacturer Allegro MicroSystems
Description HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED
Published Mar 23, 2005
Detailed Description 3046, 3056, AND 3058 The A3046EU/LU, A3056EU/LU, and A3058EU/LU Hall effect gear-tooth sensors are monolithic integrated...
Datasheet PDF File A3046 PDF File

A3046
A3046


Overview
3046, 3056, AND 3058 The A3046EU/LU, A3056EU/LU, and A3058EU/LU Hall effect gear-tooth sensors are monolithic integrated circuits that switch in response to differential magnetic fields created by ferrous targets.
These devices are ideal for use in gear-tooth-based speed, position, and timing applications and operate down to zero rpm over a wide range of air gaps and temperatures.
When combined with a backbiasing magnet and proper assembly techniques, devices can be configured to give 50% duty cycle or to switch on either leading, trailing, or both edges of a passing gear tooth or slot.
HALL EFFECT GEAR-TOOTH SENSORS –ZERO SPEED Data Sheet 27612A† X X V CC 1 2 3 GROUND OUTPUT SUPPLY The six devices differ only in their magnetic switching values and operating temperature ranges.
The low hysteresis of the A3046/56EU and A3046/56LU makes them perfectly suited for ABS (anti-lock brake system) or speed sensing applications where maintaining large air gaps is important.
The A3046EU/LU features improved switch point stability with temperature over the A3056EU/LU.
The high hysteresis of the A3058EU and A3058LU, with their excellent temperature stability, makes them especially suited to ignition timing applications where switch-point accuracy (and latching requirements) is extremely important.
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BENEFITS Dwg.
PH-012 Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC .
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28 V Reverse Battery Voltage, VRCC .
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-30 V Magnetic Flux Density, B .
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Unlimited Output OFF Voltage, VOUT .
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28 V Reverse Output Voltage, VOUT .
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5 V Output Current, IOUT .
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25 mA Package Power Dissipation, PD .
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500 mW Operating Temperature Range, TA Suffix “EU” .
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-40°C to +85°C Suffix “LU” .
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-40°C to +150°C Storage Temperature Range, TS .
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-65°C to +170°C I I...


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