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A3251ELTTR-T PDF预览

A3251ELTTR-T

更新时间: 2024-11-12 03:16:31
品牌 Logo 应用领域
急速微 - ALLEGRO 模拟IC开关信号电路
页数 文件大小 规格书
15页 354K
描述
Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches

A3251ELTTR-T 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SOT-89包装说明:LEAD FREE, TO-243AA, SOT-89, 3 PIN
针数:3Reach Compliance Code:unknown
HTS代码:8542.39.00.01风险等级:5.84
其他特性:REVERSE BATTERY PROTECTION模拟集成电路 - 其他类型:ANALOG CIRCUIT
JESD-30 代码:R-PSSO-F3JESD-609代码:e3
长度:4.5 mm功能数量:1
端子数量:3最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified座面最大高度:1.6 mm
最大供电电压 (Vsup):24 V最小供电电压 (Vsup):4.2 V
标称供电电压 (Vsup):12 V表面贴装:YES
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn)
端子形式:FLAT端子节距:1.5 mm
端子位置:SINGLE宽度:2.445 mm
Base Number Matches:1

A3251ELTTR-T 数据手册

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A3250 and A3251  
Field-Programmable, Chopper-Stabilized  
Unipolar Hall-Effect Switches  
Features and Benefits  
Description  
Chopper stabilization for stable switchpoints throughout  
operating temperature range  
The A3250 and A3251 are field-programmable, chopper-  
stabilized, unipolar Hall-effect switches designed for use in  
high-temperature applications. These devices use a chop-  
per-stabilization technique to eliminate offset inherent in  
single-element devices.  
Externally programmable operate point (through VCC  
pin)  
On-board voltage regulator for 4.2 V to 24 V operation  
On-chip protection against:  
The A3250 and A3251 are externally programmable  
devices. The devices have a wide range of programmabil-  
ity of the magnetic operate point (BOP) while the hysteresis  
remains fixed. This advanced feature allows for optimiza-  
tion of the sensor switchpoint and can drastically reduce  
the effects of variations found in a production environment,  
such as magnet and device placement tolerances.  
Supply transients  
Output short-circuits  
Reverse-battery condition  
These devices provide on-chip transient protection. A Zener  
clamp on the power supply protects against overvoltage  
conditions on the supply line. These devices also include  
short-circuit protection on the output.  
Package: 3 pin SOT89 (suffix LT) and  
3 pin SIP (suffix UA)  
The output of the A3250 switches LOW when subjected  
to a south-polarity magnetic field with a flux density that  
exceeds the threshold for BOP, and switches HIGH when the  
Continued on the next page…  
Not to scale  
Functional Block Diagram  
VCC  
Program/Lock  
Programming  
Logic  
Regulator  
Offset Adjust  
VOUT  
Amp  
Current Limit  
Low-Pass  
Filter  
GND  
3250-DS Rev. 3  

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