DRV5056A4QDBZT传感器变送器的磁性传感器-线性罗盘（IC）规格书PDF中文资料

DRV5056A4QDBZT属于传感器变送器的磁性传感器-线性罗盘（IC）。由德州仪器制造生产的DRV5056A4QDBZT磁性传感器 - 线性，罗盘（IC）该系列产品可用于将磁场强度作为一个可变数量进行测量，而相比之下，类似产品仅检测是否存在强度超过某个限值的磁场。常见的应用包括测量地球磁场，以类似于传统罗盘的方式进行定向，市面上的一些器件允许以相对于磁场的物理方向直接读取测量值。

1 Features

1• Unipolar linear hall effect magnetic sensor

• Operates from 3.3-V and 5-V power supplies

• Analog output with 0.6-V quiescent offset:

– Maximizes voltage swing for high accuracy

• Magnetic sensitivity options (at VCC = 5 V):

– A1/Z1: 200 mV/mT, 20-mT range

– A2/Z2: 100 mV/mT, 39-mT range

– A3/Z3: 50 mV/mT, 79-mT range

– A4/Z4: 25 mV/mT, 158-mT range

– A6: 100 mV/mT, 39-mT range

• Fast 20-kHz sensing bandwidth

• Low-noise output with ±1-mA drive

• Compensation for magnet temperature drift for

A1/A2/A3/A4/A6 versions and None for the

Z1/Z2/Z3/Z4 versions

• Standard industry packages:

– Surface-mount SOT-23

– Through-hole TO-92

2 Applications

• Precise position sensing

• Industrial automation and robotics

• Home appliances

• Gamepads, pedals, keyboards, triggers

• Height leveling, tilt and weight measurement

• Fluid flow rate measurement

• Medical devices

• Current sensing

3 Description

The DRV5056 is a linear Hall effect sensor that

responds proportionally to flux density of a magnetic

south pole. The device can be used for accurate

position sensing in a wide range of applications.

Featuring a unipolar magnetic response, the analog

output drives 0.6 V when no magnetic field is present,

and increases when a south magnetic pole is applied.

This response maximizes the output dynamic range

in applications that sense one magnetic pole. Four

sensitivity options further maximize the output swing

based on the required sensing range.

The device operates from 3.3-V or 5-V power

supplies. 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 that can

minimize error from VCC tolerance when the external

analog-to-digital converter (ADC) uses the same VCC

for its reference. Additionally, the device features

magnet temperature compensation to counteract how

magnets drift for linear performance across a wide

temperature range. Device options for no temperature

compensation of magnet drift are also available.

The A1 to A4 options support a temperature range of

–40°C to +125°C. The A6 version supports a

temperature range of 0°C to 85°C.