Datasheet > A1242ELHLT-I2-T

A1242ELHLT-I2-T

更新时间： 2024-02-05 19:55:29

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
11页	364K
描述
Two-Wire Chopper-Stabilized Hall Effect Latch

阅读下载

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

A1242ELHLT-I2-T 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	TO-236	Reach Compliance Code：	unknown
风险等级：	5.83	其他特性：	REVERSE BATTERY PROTECTION
主体宽度：	1.91 mm	主体高度：	1 mm
主体长度或直径：	2.98 mm	滞后：	6.4 mT
输入模式：	UNIPOLAR	JESD-609代码：	e3
最大磁场范围：	8 mT	最小磁场范围：	-8 mT
安装特点：	SURFACE MOUNT	端子数量：	3
最大工作电流：	17 mA	最高工作温度：	85 °C
最低工作温度：	-40 °C	输出接口类型：	2-WIRE INTERFACE
输出类型：	ANALOG CURRENT	封装主体材料：	PLASTIC/EPOXY
封装等效代码：	TO-236	封装形状/形式：	RECTANGULAR
电源：	3.5/24 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：	3.5 V	表面贴装：	YES
技术：	BICMOS	端子面层：	Matte Tin (Sn)
端接类型：	SOLDER	Base Number Matches：	1

A1242ELHLT-I2-T 数据手册

A1242

Two-Wire Chopper-Stabilized Hall Effect Latch

Functional Description

OPERATION

Extensive applications information on magnets and Hall-effect

sensors is available in:

The output, I_CC, of the A1242 switches to the high current state

when a magnetic field perpendicular to the Hall sensor exceeds

the operate point threshold, B_OP. Note that the device latches,

that is, a south pole of sufficient strength towards the branded

surface of the device switches the device output to I_CC(H). The

device retains its output state if the south pole is removed. When

the magnetic field is reduced to below the release point thresh-

old, B_RP, the device output goes to the low current state. The dif-

ference between the magnetic operate and release points is called

the hysteresis of the device, B_HYS. This built-in hysteresis allows

clean switching of the output even in the presence of external

mechanical vibration and electrical noise.

• Hall-Effect IC Applications Guide, AN27701,

• Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead Welding

and Lead Forming, AN27703.1

• Soldering Methods for Allegro Products – SMD and Through-Hole,

AN26009

All are provided in Allegro Electronic Data Book, AMS-702

and the Allegro Web site: www.allegromicro.com.

I+

I_CC(H)

TYPICAL APPLICATION CIRCUIT

The A1242 should be protected by an external bypass capaci-

tor, C_BYP, connected between the supply, V_CC, and the ground,

GND, of the device. C_BYPreduces both external noise and the

noise generated by the chopper-stabilization function. As shown

in figure 2, a 0.01 μF capacitor is typical.

I_CC(L)

B–

B+

Installation of C_BYPmust ensure that the traces that connect it to

the A1242 pins are no greater than 5 mm in length.

B_HYS

All high-frequency interferences conducted along the supply

lines are passed directly to the load through C_BYP, and it serves

only to protect the A1242 internal circuitry. As a result, the load

ECU (electronic control unit) must have sufficient protection,

other than C_BYP, installed in parallel with the A1242.

Figure 1. Switching Behavior of the A1242. On the horizontal axis, the

B+ direction indicates increasing south polarity magnetic field strength,

and the B– direction indicates decreasing south polarity field strength

(including the case of increasing north polarity).

V+

A series resistor on the supply side, R_S(not shown), in combina-

tion with C_BYP, creates a filter for EMI pulses.

VCC

When determining the minimum V_CCrequirement of the A1242

device, the voltage drops across R_Sand the ECU sense resistor,

R_SENSE, must be taken into consideration. The typical value for

R_SENSEis approximately 100 Ω.

A1242

C_BYP

0.01 uF

GND

Package UA Only

Maximum separation 5 mm

R_SENSE

ECU

Figure 2. Typical Application Circuit

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

A1242-DS

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

www.allegromicro.com

1...4 5 678 9 10 11

下载PDF

与A1242ELHLT-I2-T相关器件

型号	品牌	描述	获取价格	数据表
A1242EUA-I1-T	ALLEGRO	Two-Wire Chopper-Stabilized Hall Effect Latch	获取价格
A1242EUA-I2-T	ALLEGRO	Two-Wire Chopper-Stabilized Hall Effect Latch	获取价格
A1242LLHLT-I1-T	ALLEGRO	Two-Wire Chopper-Stabilized Hall Effect Latch	获取价格
A1242LLHLT-I2-T	ALLEGRO	Two-Wire Chopper-Stabilized Hall Effect Latch	获取价格
A1242LUA-I1-T	ALLEGRO	Two-Wire Chopper-Stabilized Hall Effect Latch	获取价格
A1242LUA-I2-T	ALLEGRO	Two-Wire Chopper-Stabilized Hall Effect Latch	获取价格

与A1242ELHLT-I2-T相关文章

STM32F030C6芯片介绍：主要参数分析、引脚配置说明、功耗及封装
2024-05-11

6
PCF8591数据手册解读：参数、引脚说明
2024-05-11

8
一文带你了解ss8050参数、引脚配置、应用指南
2024-05-11

5
深入解析AD7606高性能多通道模数转换器：资料手册参数分析
2024-05-10

8

产品中心

服务支持

精选活动

关于我们

帮助中心

A1242ELHLT-I2-T

A1242ELHLT-I2-T 技术参数

A1242ELHLT-I2-T 数据手册

与A1242ELHLT-I2-T相关器件

与A1242ELHLT-I2-T相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

A1242ELHLT-I2-T

A1242ELHLT-I2-T 技术参数

A1242ELHLT-I2-T 数据手册

与A1242ELHLT-I2-T相关器件

与A1242ELHLT-I2-T相关文章

您还可以找

您在本页遇到什么问题？