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3046 Datasheet(PDF) 1 Page - Allegro MicroSystems |
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3046 Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 8 page Switching Hysteresis 15-90 G 150-250 G Operating Temp. Range Device Type Number -40 °C to +85°C A3046EU A3058EU A3056EU -40 °C to +150°C A3046LU A3058LU A3056LU HALL EFFECT GEAR-TOOTH SENSORS –ZERO SPEED 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 back- biasing 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. 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. Continued next page... BENEFITS I Senses Ferrous Targets Down to Zero RPM I Large Effective Air Gap I Wide Operating Temperature Range I Operation from Unregulated Supply I High-Speed Operation I Output Compatible With All Logic Families I Reverse Battery Protection I Solid-State Reliability I Resistant to Physical Stress Dwg. PH-012 1 V CC 3 2 X X Pinning is shown viewed from branded side. SELECTION GUIDE ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC . . . . . . . . . . . . . . 28 V Reverse Battery Voltage, VRCC . . . . . . . . . . . . . . . . . . . . . . -30 V Magnetic Flux Density, B . . . . . Unlimited Output OFF Voltage, VOUT . . . . . . . . . 28 V Reverse Output Voltage, VOUT . . . . . -0.5 V Output Current, IOUT . . . . . . . . . . . . 25 mA Package Power Dissipation, PD . . 500 mW Operating Temperature Range, TA Suffix “EU” . . . . . . . . . -40 °C to +85°C Suffix “LU” . . . . . . . . -40 °C to +150°C Storage Temperature Range, TS . . . . . . . . . . . . . . . -65 °C to +170°C 3046, 3056, AND 3058 |
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