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A3422LKA PDF预览

A3422LKA

更新时间: 2024-02-08 08:19:33
品牌 Logo 应用领域
急速微 - ALLEGRO 传感器换能器磁场传感器信息通信管理
页数 文件大小 规格书
12页 161K
描述
HALL-EFFECT, DIRECTION-DETECTION SENSORS

A3422LKA 技术参数

生命周期:ActiveReach Compliance Code:compliant
风险等级:5.84Base Number Matches:1

A3422LKA 数据手册

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3421  
3422 AND  
PRELIMINARY INFORMATION  
(subject to change without notice)  
September 6, 2000  
HALL-EFFECT,  
DIRECTION-DETECTION SENSORS  
The A3421xKA and A3422xKA Hall-effect, direction-detection  
sensors are a new generation of special-function integrated sensors that  
are capable of sensing the direction of rotation of a ring magnet. These  
transducers provide separate digital outputs that provide information on  
magnet rotation speed, direction, and magnet pole count. These devices  
eliminate the major manufacturing hurdles encountered in fine-pitch  
direction-detection applications, namely maintaining accurate mechani-  
cal location between the two active Hall elements. Here, the two Hall  
elements are photolithographically aligned to better than 1 µm, as  
contrasted with 100 µm or worse mechanical location tolerance when  
manufactured discretely. These highly sensitive, temperature-stable,  
magnetic transducers are ideal for use in digital-encoder systems in the  
harsh environments of automotive or industrial applications. The  
A3421xKA is a high-hysteresis device designed for low-resolution  
pulse counting while the A3422xKA is a high-sensitivity device  
optimized for use with high-density magnets.  
E1  
X
E2  
X
LOGIC  
V
CC  
1
2
3
4
5
The A3421xKA and A3422xKA monolithic integrated circuits  
contain two independent Hall-effect latches whose digital outputs are  
internally coupled to CMOS logic circuitry that decodes signal speed  
and direction. Extremely low-drift BiCMOS circuitry is used for the  
amplifiers to ensure symmetry between the two latches so that signal  
quadrature can be maintained. An on-chip voltage regulator allows the  
use of these devices from a 4.5 V to 18 V supply. Both devices have  
standard open-collector outputs; the logic operation of both devices is  
the same.  
Dwg. PH-015  
Pinning is shown viewed from branded side.  
ABSOLUTE MAXIMUM RATINGS  
Two operating temperature ranges are provided; suffix ‘E–’ is for  
the automotive and industrial temperature range of -40°C to +85°C,  
suffix ‘L–’ is for the automotive and military temperature range of  
-40°C to +150°C. The 5-pin ‘KA’ SIP package provides a cost-com-  
petitive solution to linear magnetic sensing in harsh environments.  
Supply Voltage, VCC . . . . . . . . . . . . . 18 V  
Magnetic Flux Density, B . . . . Unlimited  
Output OFF Voltage, VOUT . . . . . . . . VCC  
Output Sink Current, IOUT . . . . . . . 30 mA  
FEATURES  
Package Power Dissipation,  
I Internal Direction-Decoding Circuitry  
I Two Matched Hall Latches On A Single Substrate  
I Superior Temperature Stability  
I 4.5 V to 18 V Operation  
PD . . . . . . . . . . . . . . . . . . . . . . 500 mW  
Operating Temperature Range, TA  
Suffix ‘EKA’ . . . . . . . -40˚C to +85˚C  
Suffix ‘LKA’ . . . . . . -40˚C to +150˚C  
Electrically Defined Power-On State  
Under-Voltage Lockout  
Storage Temperature Range,  
TS . . . . . . . . . . . . . . . -65˚C to +170˚C  
Always order by complete part number, e.g., A3421EKA .  

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