A1421LK

更新时间： 2024-09-24 21:54:55

品牌	Logo	应用领域
急速微 - ALLEGRO		传感器电容器
页数	文件大小	规格书
16页	1673K
描述
High Accuracy Analog Speed Sensor with Integrated Filter Capacitor

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A1421LK 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SIP	包装说明：	SIP,
针数：	4	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.89
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：	e0
长度：	5.22 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）：	240
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：	TIN LEAD
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 数据手册

Preliminary Data Sheet

Subject to Change Without Notice

June 16, 2004

A1421, A1422, A1423

High Accuracy Analog Speed Sensor

with Integrated Filter Capacitor

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

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,

providing the high accuracy of analog sensing without an external ﬁlter capaci-

tor. This reduces cost and components, while improving the reliability of the ﬁnal

sensor solution.

Package K, 4-pin SIP

The 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

common-mode signal changes. 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 pin, tie to GND

4. GND

Features and Beneﬁts

• Integrated tracking capacitor

• Senses motion of ring magnet or ferrous targets

• Wide operating temperature range

ABSOLUTE MAXIMUM RATINGS

• Operation with frequency of sensed transitions from 20 Hz to 30 kHz

• EMI/ESD-resistant

• Large effective air gaps

• 4.0 to 26.5 V operating range

• Output compatible with both TTL and CMOS logic families

• Reverse battery protection

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

Reverse-Output Voltage, V_ROUT...................–50 mA

Operating Temperature

Ambient (L) , T_A.........................–40ºC to 150ºC

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

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

• Resistant to mechanical and thermal stress

Engineering samples available on a limited basis. Contact your local sales

or applications support ofﬁce for additional information.

Allegro MicroSystems, Inc.

115 Northeast Cutoff, Box 15036

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

www.allegromicro.com

A1421-DS Rev. 0

12 3 4 5 6 7...16

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与A1421LK相关器件

型号	品牌	获取价格	描述	数据表
A1421LK-T	ALLEGRO	获取价格	High Precision Hall Effect AC-Coupled Differential Sensor with Integrated Filter Capacitor
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

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