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A1391

更新时间: 2024-01-11 07:57:59
品牌 Logo 应用领域
急速微 - ALLEGRO 传感器
页数 文件大小 规格书
15页 335K
描述
Micro Power 3V Linear Hall Effect Sensor with Tri-State Output and User-Selectable Sleep Mode

A1391 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active包装说明:SOLCC6,.15,20
Reach Compliance Code:compliant风险等级:1.73
Is Samacsys:N其他特性:SENSITIVITY IS 1.25 MV/G
主体宽度:2 mm主体高度:0.75 mm
主体长度或直径:3 mmJESD-609代码:e3
线性度 (%):100 %安装特点:SURFACE MOUNT
端子数量:6最大工作电流:3.2 mA
最高工作温度:85 °C最低工作温度:-20 °C
输出电路类型:SINGLE-ENDED输出范围:3.1V
输出类型:ANALOG VOLTAGE封装主体材料:PLASTIC/EPOXY
封装等效代码:SOLCC6,.15,20封装形状/形式:RECTANGULAR
电源:2.5/3.3 V电阻:20 Ω
灵敏度(mV / G):1.18 mV/G传感器/换能器类型:MAGNETIC FIELD SENSOR,HALL EFFECT
子类别:Other Sensors/Transducers最大供电电压:3.5 V
最小供电电压:2.5 V表面贴装:YES
技术:BICMOS端子面层:Matte Tin (Sn)
端接类型:SOLDERBase Number Matches:1

A1391 数据手册

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A1391 and A1392  
Micro Power 3V Linear Hall Effect Sensor with Tri-State Output  
and User-Selectable Sleep Mode  
These linear Hall effect sensor integrated circuits (ICs) provide a voltage output that is  
directly proportional to an applied magnetic field. Before amplification, the sensitivity of  
typical Hall effect ICs (measured in mV/G) is directly proportional to the current flowing  
through the Hall effect transducer element inside the ICs. In many applications, it is difficult  
to achieve sufficient sensitivity levels with a Hall effect sensor IC without consuming more  
than 3 mA of current. The A1391 and A1392 minimize current consumption to less than  
Package EH, 6-pin MLP/DFN  
25 μA through the addition of a user-selectable sleep mode. This makes these devices per-  
fect for battery-operated applications such as: cellular phones, digital cameras, and portable  
tools. End users can control the current consumption of the A1391 and A1392 by applying  
a logic level signal to the S¯L¯¯E¯¯E¯¯P¯ pin. The outputs of the devices are not valid (high-imped-  
VREF  
SLEEP  
GND  
1
2
3
6
5
4
VCC  
OUT  
GND  
ance mode) during sleep mode. The high-impedance output feature allows the connection of  
multiple A1391 and A1392 Hall effect devices to a single A-to-D converter input.  
The quiescent output voltage of these devices is 50 % nominal of the ratiometric supply  
reference voltage applied to the VREF pin of the device. The output voltage of the device is  
not ratiometric with respect to the SUPPLY pin.  
Despite the low power consumption of the circuitry in the A1391 and A1392, the features  
required to produce a highly-accurate linear Hall effect IC have not been compromised.  
Each BiCMOS monolithic circuit integrates a Hall element, improved temperature-com-  
pensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal  
high-gain amplifier, and proprietary dynamic offset cancellation circuits. End of line, post-  
packaging, factory programming allows precise control of device sensitivity and offset.  
This device is available in a small 2.0×3.0 mm, 0.75 mm nominal height micro leaded pack-  
age (MLP). It is Pb (lead) free, with 100 % matte tin leadframe plating.  
ABSOLUTE MAXIMUM RATINGS*  
Features and Benefits  
Supply Voltage, VCC.............................................8 V  
Reverse-Supply Voltage, VRCC .......................–0.1 V  
Ratiometric Supply Reference Voltage, VREF ......7 V  
Reverse-Ratiometric Supply  
Reference Voltage, VRREF .........................–0.1 V  
Logic Supply Voltage, VS¯¯L¯E¯¯¯E¯P¯  
• High-impedance output during sleep mode  
• Compatible with 2.5 to 3.5 V power supplies  
• 10 mW power consumption in the active mode  
• Miniature MLP package  
• Ratiometric output scales with the ratiometric supply reference voltage (VREF pin)  
Temperature-stable quiescent output voltage and sensitivity  
• Wide ambient temperature range: –20°C to 85°C  
• ESD protection greater than 3 kV  
(VCC > 2.5 V)...............................................32 V  
Reverse-Logic Supply Voltage, VRS¯¯L¯E¯¯¯E¯P¯.........–0.1 V  
Output Voltage, VOUT............................ VCC + 0.1 V  
Reverse-Output Voltage, VROUT......................–0.1 V  
Temperatures  
• Solid-state reliability  
OperatingAmbient,TA,RangeS....–20ºCto85ºC  
Junction, TJ(MAX) .......................................165ºC  
Storage, TS .................................–65ºC to 170ºC  
• Preset sensitivity and offset at final test  
Use the following complete part numbers when ordering:  
*All ratings with reference to ground.  
Sensitivity  
(mV/G, Typ.)  
Part Number  
Packing*  
A1391SEHLT-T  
A1392SEHLT-T  
7-in. reel, 3000 pieces/reel  
7-in. reel, 3000 pieces/reel  
1.25  
2.50  
*Contact Allegro for additional packing options.  
Allegro MicroSystems, Inc.  
115 Northeast Cutoff, Box 15036  
Worcester, Massachusetts 01615-0036 (508) 853-5000  
www.allegromicro.com  
A1391-DS  

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