齿轮传感器 TLE4921-5U  21-5U

品牌：德国 INFINEON

TLE4921-5U 21-5U 工作温度：–40 to150°C

TLE4921-5U 21-5U 封装：P-SSO-4-1（TO-92-4）SIP-4 2000/盒

TLE4921-5U是齿轮型传感器应用于计数器,汽车上
应用：动态差分霍尔传感器

需要详细技术资料请发邮件 zoe_hxe@hotmail.com  索取

1.1 Features
• Advanced performance
• High sensitivity
• Symmetrical thresholds
• High piezo resistivity
• Reduced power consumption
• South and north pole pre-induction possible
• AC coupled
• Digital output signal
• Two-wire and three-wire configuration possible
• Large temperature range
• Large airgap
• Low cut-off frequency
• Protection against overvoltage
• Protection against reversed polarity
• Output protection against electrical disturbances

Type  Marking  Ordering Code  Package
TLE4921-5U  21C5U  Q62705-K664  PSSO4-1

The differential Hall Effect sensor TLE4921-5U provides a high sensitivity and a superior
stability over temperature and symmetrical thresholds in order to achieve a stable duty
cycle. TLE4921-5U is particularly suitable  for rotational speed  detection and timing
applications of ferromagnetic toothed wheels such as  anti-lock braking systems,
transmissions, crankshafts, etc. The integrated circuit (based on Hall effect) provides a
digital signal output with frequency proportional to the speed of rotation. Unlike other
rotational sensors differential Hall ICs are not  influenced by radial vibration within the
effective airgap of the sensor and require no external signal processing.

2.2 Functional Description
The Differential Hall Sensor IC detects the motion and position of ferromagnetic and
permanent magnet structures by measuring the differential flux density of the magnetic
field. To detect ferromagnetic objects the magnetic field must be provided by a back
biasing permanent magnet (south or north pole of the magnet attached to the rear
unmarked side of the IC package).
Using an external capacitor the generated Hall voltage signal is slowly adjusted via an
active high pass filter with a low cut-off frequency. This causes the output to switch into
a biased mode after a time constant is elapsed. The time constant is determined by the
external capacitor. Filtering avoids ageing and temperature influence from Schmitt-
trigger input and eliminates device and magnetic offset.
The TLE4921-5U can be exploited to detect toothed wheel rotation in a rough
environment. Jolts against the toothed wheel and ripple have no influence on the output
signal.
Furthermore, the TLE4921-5U can be operated in a two-wire as well as in a three-wire-
configuration.
The output is logic compatible by high/low levels regarding on and off.

差分霍尔效应传感器TLE 4921 - 5U提供了一个高灵敏度和
卓越的稳定温度和对称的阈值，以实现
稳定的工作周期。 TLE 4921 - 5U特别适合转速检测
和定时应用的车轮铁齿如防抱死制动
系统，变速箱，曲轴等，积体电路（基于霍尔
效应）提供了一个数字信号输出频率成正比的速度
轮换。不同于其他旋转传感器霍尔集成电路差别不影响
径向振动的有效气隙传感器，无需外部信号处理。

TLE4921-5U 霍尔效应传感器IC特点：

先进的性能
高灵敏度
对称的阈值
高压电电阻
减少电力消耗
南亚和北极前可能诱导
交流耦合
数字输出信号
两线和三线配置的可能
大温度范围
大气隙
低截止频率
过电压保护
保护极性逆转
输出保护，防止电气干扰

 

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详细型号资料：
http://www.yxfic.net/chinese/INFINEON/TLE4921-5U.html
http://www.yxfic.com/c_stock_show/index.asp?id=36