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UGN3060KA Datasheet(PDF) 4 Page - Allegro MicroSystems |
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UGN3060KA Datasheet(HTML) 4 Page - Allegro MicroSystems |
4 / 10 page 3059 AND 3060 HALL-EFFECT GEAR-TOOTH SENSORS —AC COUPLED 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 4 TYPICAL OPERATING CHARACTERISTICS SUPPLY CURRENT 0 20 15 10 5 0 25 5075100 AMBIENT TEMPERATURE IN °°°°C -50 Dwg. GH-028-1 125 -25 V = 18 V CC 150 B ≤ B RP A gear-tooth sensing system consists of the sensor IC, a back-biasing magnet, and a target. The system requirements are usually specified in terms of the effective working air gap between the package and the target (gear teeth), the number of switching events per rotation of the target, temperature and speed ranges, minimum pulse duration or duty cycle, and switch point accuracy. Careful choice of the sensor IC, magnet material and shape, target material and shape, and assembly techniques enables large working air gaps and high switch-point accuracy over the system operating temperature range. Naming Conventions. With a south pole in front of the branded surface of the sensor or a north pole behind the sensor, the field at the sensor is defined as positive. As used here, negative flux densities are defined as less than zero (algebraic convention), e.g., -100 G is less than +50 G. Magnet Biasing. In order to sense moving non- magnetized ferrous targets, these devices must be back- biased by mounting the unbranded side on a small permanent magnet. Either magnetic pole (north or south) can be used. The devices can also be used without a back-biasing magnet. In this configuration, the sensor can be used to detect a rotating ring magnet such as those found in brushless dc motors or in speed sensing applications. Here, the sensor detects the magnetic field gradient created by the magnetic poles. APPLICATIONS INFORMATION 0 8 SUPPLY VOLTAGE IN VOLTS Dwg. GH-031-1 13 12 11 10 9 510 15 20 25 T = +25 °C A B < BRP |
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