Overview
The DRV5057A2QDBZR is a linear Hall effect sensor produced by Texas Instruments. This device is part of the DRV5057 family and is specifically designed for precise position sensing and other applications requiring accurate magnetic field detection. The DRV5057 operates from both 3.3-V and 5-V power supplies and outputs a pulse-width modulated (PWM) signal at a 2-kHz carrier frequency. The sensor is sensitive to the magnetic field component perpendicular to the top of the package and can detect both north and south magnetic poles. It features temperature compensation for magnet drift, ensuring stable performance across a wide temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage | 3 V to 3.63 V, 4.5 V to 5.5 V | V |
| Output Frequency | 2 kHz | Hz |
| Sensitivity Options (at VCC = 5 V) | 1%D/mT (DRV5057A2) | %D/mT |
| Magnetic Flux Density Range (at VCC = 5 V) | ±42 mT (DRV5057A2) | mT |
| Output Type | Open-drain with 20-mA sink capability | |
| Operating Ambient Temperature | –40°C to +125°C | °C |
| Package Options | SOT-23, TO-92 | |
| Quiescent Duty Cycle | 46% to 54% (at B = 0 mT, TA = 25°C, VCC = 3.3 V or 5 V) | % |
Key Features
- PWM-output linear Hall effect magnetic sensor
- Operates from 3.3-V and 5-V power supplies
- 2-kHz clock output with 50% quiescent duty cycle
- Multiple sensitivity options to maximize output dynamic range
- Open-drain output with 20-mA sink capability
- Temperature compensation for magnet drift (DRV5057A1-A4 options)
- Industry-standard packages: SOT-23 and TO-92
- Suitable for distance transmission in noisy environments due to edge-to-edge timing of PWM signal
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
- Absolute angle encoding
- Current sensing
Q & A
- What is the operating voltage range of the DRV5057A2QDBZR?
The DRV5057A2QDBZR operates from 3 V to 3.63 V and 4.5 V to 5.5 V.
- What is the output frequency of the DRV5057A2QDBZR?
The output frequency is 2 kHz.
- What are the sensitivity options for the DRV5057A2QDBZR?
The DRV5057A2QDBZR has a sensitivity of 1%D/mT at VCC = 5 V.
- What is the magnetic flux density range for the DRV5057A2QDBZR?
The magnetic flux density range is ±42 mT at VCC = 5 V.
- Does the DRV5057A2QDBZR have temperature compensation for magnet drift?
- What are the package options for the DRV5057A2QDBZR?
The device is available in SOT-23 and TO-92 packages.
- What is the quiescent duty cycle of the DRV5057A2QDBZR?
The quiescent duty cycle is 46% to 54% at B = 0 mT, TA = 25°C, and VCC = 3.3 V or 5 V.
- What are some common applications of the DRV5057A2QDBZR?
Common applications include precise position sensing, industrial automation, home appliances, and medical devices.
- How does the DRV5057A2QDBZR handle noisy environments?
The device maintains signal integrity in noisy environments due to the edge-to-edge timing of the PWM signal.
- What is the operating ambient temperature range of the DRV5057A2QDBZR?
The operating ambient temperature range is –40°C to +125°C.
