A3046

更新时间： 2024-02-22 02:30:42

品牌	Logo	应用领域
急速微 - ALLEGRO		传感器
页数	文件大小	规格书
8页	138K
描述
HALL EFFECT GEAR-TOOTH SENSORS ZERO SPEED

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技术参数
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A3046 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	SIP3,.04,50	Reach Compliance Code：	unknown
风险等级：	5.88	其他特性：	OUTPUT COMPATIBLE WITH ALL LOGIC FAMILIES, REVERSE BATTERY PROTECTION
主体宽度：	1.55 mm	主体高度：	4.53 mm
主体长度或直径：	4.585 mm	外壳：	PLASTIC
滞后：	5 mT	输入模式：	BIPOLAR
JESD-609代码：	e0	最大磁场范围：	15 mT
最小磁场范围：	-15 mT	安装特点：	THROUGH HOLE MOUNT
端子数量：	3	最大工作电流：	14 mA
最高工作温度：	150 °C	最低工作温度：	-40 °C
输出：	OPEN-COLLECTOR	输出极性：	INVERTING
输出范围：	0.13-0.40V	输出类型：	DIGITAL VOLTAGE
封装主体材料：	PLASTIC/EPOXY	封装等效代码：	SIP3,.04,50
封装形状/形式：	RECTANGULAR	电源：	4.5/24 V
传感器/换能器类型：	MAGNETIC FIELD SENSOR,HALL EFFECT	子类别：	Other Sensors
最大供电电压：	24 V	最小供电电压：	4.5 V
表面贴装：	NO	技术：	BIPOLAR
端子面层：	Tin/Lead (Sn/Pb)	端接类型：	SOLDER
Base Number Matches：	1

A3046 数据手册

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

APPLICATIONS INFORMATION

Figure 1

TYPICAL GEAR-TOOTH SENSING

APPLICATION

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.

BACK-BIASING

MAGNET

OPTIONAL POLE PIECE

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.

SENSOR IC

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.

TARGET

GEAR

Figure 2

TYPICAL TRANSFER CHARACTERISTIC

Dwg. AH-003

24 V

MAX

OUT(SAT)

-B

DIFFERENTIAL FLUX DENSITY, BE1 – BE2

Dwg. GH-034

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

1 2 345 6 7 8

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