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A3064 Dataheets PDF



Part Number A3064
Manufacturers Allegro MicroSystems
Logo Allegro MicroSystems
Description HALL-EFFECT GEAR-TOOTH SENSOR
Datasheet A3064 DatasheetA3064 Datasheet (PDF)

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 .... 24 V Reverse Battery Voltage, VRCC -30 V Magnetic Flux Density, B .. Unlimited Output Off Voltage, VOUT .. 24 V Output Current, IOUT 25 mA Package Power Dissipation, .

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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 ............................. 24 V Reverse Battery Voltage, VRCC .......... -30 V Magnetic Flux Density, B ............ Unlimited Output Off Voltage, VOUT ...................... 24 V Output Current, IOUT ......................... 25 mA Package Power Dissipation, PD ............................................ 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 voltage regulator, two quadratic Hall-effect sensing elements, temperature compensating circuitry, a low-level amplifier, band-pass filter, Schmitt trigger, and an open-collector output driver. The on-board regulator permits operation with supply voltages of 4.5 to 24 volts. The output stage can easily switch 20 mA over the full frequency response range of the sensor and is compatible with bipolar and MOS logic circuits. The device is packaged in a 5-pin plastic SIP. FEATURES s Senses Motion of Ferrous Targets s Wide Operating Temperature Range s Operation to 30 kHz s Resistant to EMI s Large Effective Air Gap s 4.5 V to 24 V Operation s Output Compatible With All Logic Families s Reverse Battery Protection s Resistant to Physical Stress Always order by complete part number, e.g., A3064LKA . 3064 HALL-EFFECT GEAR-TOOTH SENSOR —AC COUPLED 1 SUPPLY FUNCTIONAL BLOCK DIAGRAM REG XX OUTPUT 2 + - 3 GROUND 4 FILTER 5 FILTER Dwg. FH-008-1 ELECTRICAL CHARACTERISTICS over operating tempe.


TP297A A3064 3064


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