DRV5021传感器变送器的磁性传感器-开关（固态）规格书PDF中文资料

DRV5021属于传感器变送器的磁性传感器-开关（固态）。由德州仪器制造生产的DRV5021磁性传感器 - 开关（固态）该系列产品使用固态技术来检测是否存在超过某个特定幅度和/或标示的磁场，并提供指示是否存在此类磁场的双态输出。它们与磁簧开关以及线性或罗盘型固态器件不同，前者通过使用移动机械部件来提供类似的功能，后者提供指示所施加磁场的强度和/或方向的可变输出。

1 Features

1• Qualified for automotive applications

• AEC-Q100 qualified with the following results:

– Device temperature grade 0: –40°C to 150°C

ambient operating temperature range

– Device HBM ESD classification level 3A

– Device CDM ESD classification level C6

• Digital unipolar-switch hall sensor

• 2.5-V to 5.5-V operating VCC range

• Magnetic sensitivity options (BOP, BRP):

– DRV5021A1-Q1: 2.9 mT, 1.8 mT

– DRV5021A2-Q1: 9.2 mT, 7.0 mT

– DRV5021A3-Q1: 17.9 mT, 14.1 mT

• Fast 30-kHz sensing bandwidth

• Open-drain output capable of 20 mA

• Optimized low-voltage architecture

• Integrated hysteresis to enhance noise immunity

• Standard industry package:

– Surface-mount SOT-23

2 Applications

• Automotive gear shifters, body closure

• Limit switches

• General proximity sensing

• Brushed dc motor feedback

• Door open and close detection

• Valve positioning

• Pulse counting

3 Description

The DRV5021-Q1 device is a low-voltage, digitalswitch,

Hall effect sensor for high-speed automotive

applications. Operating from a 2.5-V to 5.5-V power

supply, the device senses magnetic flux density, and

gives a digital output based on predefined magnetic

thresholds.

This device senses magnetic fields perpendicular to

the face of the package. When the applied magnetic

flux density exceeds the magnetic operate point (BOP)

threshold, the open-drain output of the device drives

a low voltage. When the flux density decreases to

less than the magnetic release point (BRP) threshold,

the output goes to high impedance. The hysteresis

resulting from the separation of BOP and BRP helps

prevent output errors caused by input noise. This

configuration makes system designs more robust

against noise interference.

The device operates consistently across a wide

ambient temperature range of –40°C to +150°C.