Texas Instruments DRV5055/DRV5055-Q1线性霍尔效应传感器
Texas Instruments DRV5055/DRV5055-Q1比例式线性霍尔效应传感器成比例地响应磁通密度。该器件可用于精确的位置检测,应用十分广泛。DRV5055/DRV5055-Q1采用3.3V或5V电源。没有磁场时,模拟输出驱动一半VCC。输出与施加的磁通密度保持线性变化,四个灵敏度选项可根据所需的感应范围实现最大输出电压摆幅。南北磁极生产独特电压。感应垂直封装顶部的磁通量,两种封装选项提供不同感应方向。该器件采用比例式架构,可消除外部模拟数字转换器 (ADC) 使用相同VCC作为其参考时来自VCC容差的错误。另外,DRV5055/DRV5055-Q1可抵消磁体漂移的磁体温度补偿,从而在–40°C至125°C的宽温度范围内实现线性性能。DRV5055-Q1器件符合汽车应用类AEC-Q100认证。The DRV5055/DRV5055-Q1 operates from 3.3V or 5V power supplies. The analog output drives half of VCC when no magnetic field is present. The output changes linearly with the applied magnetic flux density, and four sensitivity options enable maximal output voltage swing based on the required sensing range. North and south magnetic poles produce unique voltages.
Magnetic flux perpendicular to the top of the package is sensed, and the two package options provide different sensing directions.
The device uses a ratiometric architecture to eliminate errors from VCC tolerance when the external analog-to-digital converter (ADC) uses the same VCC for its reference. The DRV5055/DRV5055-Q1 features magnet temperature compensation to counteract how magnets drift for linear performance across a wide –40°C to 125°C temperature range. The Texas Instruments DRV5055-Q1 devices are AEC-Q100 qualified for automotive applications.
特性
- 比例式线性霍尔效应磁传感器
- 采用3.3V至5V电源工作
- 具VCC/2静态偏移的模拟输出
- 磁性灵敏度选项( VCC=5V时)
- A1:100mV/mT,±21mT量程
- A2:50mV/mT,±42mT量程
- A3:25mV/mT,±85mT量程
- A4:12.5mV/mT,±169mT量程
- 20kHz的快速传感带宽
- 低噪声输出,±1mA驱动
- 磁体温度漂移补偿
- 行业标准封装
- 表面贴装SOT-23
- 通孔TO-92
应用
- 准确位置传感
- 工业自动化和机器人
- 家用电器
- 游戏手柄、踏板、键盘、触发器
- 高度调平、倾斜和重量测量
- 液体流速测量
- 医疗设备
- 绝对角度编码
- 电流检测
Additional Resources
功能框图
