A1421LK-T

更新时间： 2024-09-25 03:16:11

品牌	Logo	应用领域
急速微 - ALLEGRO		模拟IC 传感器信号电路电容器
页数	文件大小	规格书
16页	1046K
描述
High Precision Hall Effect AC-Coupled Differential Sensor with Integrated Filter Capacitor

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A1421LK-T 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SIP
包装说明：	SIP-4	针数：	4
Reach Compliance Code：	compliant	HTS代码：	8542.39.00.01
风险等级：	5.81	Is Samacsys：	N
模拟集成电路 - 其他类型：	MOTION SENSOR	JESD-30 代码：	R-PSIP-T4
JESD-609代码：	e3	长度：	5.21 mm
功能数量：	1	端子数量：	4
最高工作温度：	150 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	5.67 mm	最大供电电压 (Vsup)：	26.5 V
最小供电电压 (Vsup)：	4 V	标称供电电压 (Vsup)：	12 V
表面贴装：	NO	温度等级：	AUTOMOTIVE
端子面层：	Matte Tin (Sn)	端子形式：	THROUGH-HOLE
端子节距：	1.27 mm	端子位置：	SINGLE
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	1.55 mm
Base Number Matches：	1

A1421LK-T 数据手册

A1421, A1422, A1423

High Precision Hall Effect AC-Coupled Differential Sensor

with Integrated Filter Capacitor

The A1421, A1422 and A1423 are ac-coupled Hall-effect sensors which include

Package K, 4-pin SIP

monolithic integrated circuits that switch in response to changing differential

magnetic ﬁelds created by rotating ring magnets or, when coupled with a magnet,

by ferrous targets. This family of devices also includes an integrated capacitor that

provides the high accuracy of analog sensing without an external ﬁlter capacitor.

This reduces cost and components, while improving the reliability of the ﬁnal sen-

sor solution.

Magnetic ﬁeld changes are sensed by two integrated Hall transducers and then

are differentially ampliﬁed on the chip. Differential sensing provides immunity to

radial vibration, within the device operating air gap range, by rejection of this

common-mode signal change. Steady-state system offsets are eliminated using an

on-chip differential bandpass ﬁlter with integrated capacitor. This ﬁlter also pro-

vides relative immunity to interference from electromagnetic sources. The device

utilizes advanced temperature compensation for the high-pass ﬁlter, sensitivity,

and Schmitt trigger switchpoints to guarantee optimal operation to low frequen-

cies over a wide range of air gaps and temperatures.

Each device includes: a voltage regulator, two Hall transducers, temperature com-

pensating circuitry, a low-level ampliﬁer, bandpass ﬁlter, Schmitt trigger, and an

output driver. The on-board regulator permits operation with supply voltages from

4.0 to 26.5 V. The output stage can switch 20 mA over the full frequency response

range of the sensor, and is compatible with TTL and CMOS logic circuits.

Continued on next page…

1. VCC

2. VOUT

3. TEST

4. GND

Features and Beneﬁts

• Integrated tracking capacitor

• Senses motion of ring magnet or ferrous targets

• Wide operating temperature range

• Operation with magnetic input signal frequency from 20 Hz to 30 kHz

• EMI/ESD-resistant

• Large effective air gaps

ABSOLUTE MAXIMUM RATINGS

• 4.0 to 26.5 V supply operating range

• Output compatible with both TTL and CMOS logic families

• Reverse battery protection

• Resistant to mechanical and thermal stress

• Accurate true zero crossing switchpoint (A1421 only)

• High vibration immunity, in running mode (A1423 only)

Supply Voltage, V_CC........................................28 V*

Reverse-Supply Voltage, V_RCC........................–18 V

Output Current, I_OUT.......................................25 mA

Reverse-Output Current, I_ROUT.....................–50 mA

Operating Temperature

Ambient, T_A,Range L................–40ºC to 150ºC

Maximum Junction, T_J(max)........................165ºC

Storage Temperature, T_S..................–65ºC to 170ºC

*Refer to Power Derating section.

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

A1421a-DS

12 3 4 5 6 7...16

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与A1421LK-T相关器件

型号	品牌	获取价格	描述	数据表
A1422	ALLEGRO	获取价格	High Accuracy Analog Speed Sensor with Integrated Filter Capacitor
A1422LK	ALLEGRO	获取价格	High Accuracy Analog Speed Sensor with Integrated Filter Capacitor
A1422LK-T	ALLEGRO	获取价格	High Precision Hall Effect AC-Coupled Differential Sensor with Integrated Filter Capacitor
A1423	ALLEGRO	获取价格	High Accuracy Analog Speed Sensor with Integrated Filter Capacitor
A1423LK	ALLEGRO	获取价格	High Accuracy Analog Speed Sensor with Integrated Filter Capacitor
A1423LK-T	ALLEGRO	获取价格	High Precision Hall Effect AC-Coupled Differential Sensor with Integrated Filter Capacitor
A1424AG1	DBLECTRO	获取价格	DIP PLUG PITCH:2.54mm
A1424AG2	DBLECTRO	获取价格	DIP PLUG PITCH:2.54mm
A1424AS1	DBLECTRO	获取价格	DIP PLUG PITCH:2.54mm
A1424AS2	DBLECTRO	获取价格	DIP PLUG PITCH:2.54mm

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