A3058LU - HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED

Allegro MicroSystems에서 제조한 전자 부품 A3058LU은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.

A3058LU의 기능 및 특징 중 하나는 "HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED" 입니다.

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A3058LU 기능

HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED

Allegro MicroSystems

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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�

Contents of page 4 out of 8 pages :

3046, 3056, AND 3058 HALL EFFECT GEAR-TOOTH SENSORS –ZERO SPEED Figure 1 TYPICAL GEAR-TOOTH SENSING APPLICATION BACK-BIASING MAGNET S OPTIONAL POLE PIECE SENSOR IC A NS TARGET GEAR APPLICATIONS INFORMATION A gear-tooth sensing system consists of the sensor IC, a back- biasing magnet, an optional pole piece, and a target (Figure 1). 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, 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

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부품번호	상세설명 및 기능	제조사
A3058LU	HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED	Allegro MicroSystems