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A3064

Allegro MicroSystems
Part Number A3064
Manufacturer Allegro MicroSystems
Description HALL-EFFECT GEAR-TOOTH SENSOR
Published May 14, 2015
Detailed Description Data Sheet 27612.21 3064 HALL-EFFECT GEAR-TOOTH SENSOR —AC COUPLED SUPPLY OUTPUT GROUND FILTER FILTER XX VCC 12 34 5...
Datasheet PDF File A3064 PDF File

A3064
A3064

Overview
Data Sheet 27612.
21 3064 HALL-EFFECT GEAR-TOOTH SENSOR —AC COUPLED SUPPLY OUTPUT GROUND FILTER FILTER XX VCC 12 34 5 Dwg.
PH-011-1 Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS at TA = +25°C Supply Voltage, VCC .
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24 V Reverse Battery Voltage, VRCC -30 V Magnetic Flux Density, B .
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Unlimited Output Off Voltage, VOUT .
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24 V Output Current, IOUT 25 mA Package Power Dissipation, PD .
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500 mW Operating Temperature Range, TA .
-40°C to +150°C Storage Temperature Range, TS .
-65°C to +170°C The A3064LKA ac-coupled Hall-effect gear-tooth sensor is a monolithic integrated circuit that switches in response to changing differential magnetic fields created by moving ferrous targets.
This device is ideal for use in non-zero-speed, gear-tooth-based speed, position, and timing applications such as in anti-lock braking systems, transmissions, and crankshafts.
When coupled with a back-biasing magnet, the sensor can be configured to turn on or off with the leading or trailing edge of a geartooth or slot.
Changes in fields on the magnet face caused by a moving ferrous mass are sensed by two integrated Hall transducers and are differentially amplified by on-chip electronics.
This differential sensing design provides immunity to radial vibration within the device’s operating air gap.
Steady-state magnet and system offsets are eliminated using an on-chip differential band-pass filter.
This filter also provides relative immunity to interference from RF and electromagnetic sources.
The on-chip temperature compensation and Schmitt trigger circuitry minimizes shifts in effective working air gaps and switch points over temperature, allowing operation to low frequencies over a wide range of air gaps and temperatures.
Each Hall-effect digital Integrated circuit includes a v...


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