Overview
The DRV5056A3QDBZR is a ratiometric unipolar linear Hall effect sensor produced by Texas Instruments. This device is designed to respond proportionally to the flux density of a magnetic south pole, making it ideal for accurate position sensing in a wide range of applications. It operates from 3.3-V and 5-V power supplies and features an analog output with a 0.6-V quiescent offset, which maximizes the output dynamic range for high accuracy.
The sensor is available in a surface-mount SOT-23 package and supports various magnetic sensitivity options to cater to different sensing ranges. It also includes features such as fast 20-kHz sensing bandwidth, low-noise output, and compensation for magnet temperature drift in certain versions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBZ) | - |
| Pins | 3 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage | 3.3 to 5.5 | V |
| Magnetic Sensitivity Options (at VCC = 5 V) | A1/Z1: 200 mV/mT, 20-mT range A2/Z2, A6: 100 mV/mT, 39-mT range A3/Z3: 50 mV/mT, 79-mT range A4/Z4: 25 mV/mT, 158-mT range | mV/mT, mT |
| Sensing Bandwidth | 20 kHz | - |
| Output Noise | ±1-mA drive | mA |
| Temperature Compensation | Available for A1/A2/A3/A4/A6 versions | - |
| Operating Current | Up to 10 mA | mA |
| Body Dimensions | 2.92 mm x 1.30 mm | mm |
Key Features
- Unipolar linear Hall effect magnetic sensor
- Operates from 3.3-V and 5-V power supplies
- Analog output with 0.6-V quiescent offset to maximize voltage swing for high accuracy
- Multiple magnetic sensitivity options to suit various sensing ranges
- Fast 20-kHz sensing bandwidth
- Low-noise output with ±1-mA drive
- Compensation for magnet temperature drift in A1/A2/A3/A4/A6 versions
- Standard industry packages: surface-mount SOT-23 and through-hole TO-92
- Ratiometric architecture to minimize error from VCC tolerance
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
Q & A
- What is the operating temperature range of the DRV5056A3QDBZR?
The operating temperature range is -40°C to 125°C for the A1 to A4 options and 0°C to 85°C for the A6 version.
- What are the available magnetic sensitivity options for the DRV5056A3QDBZR?
The device offers several sensitivity options: A1/Z1: 200 mV/mT, 20-mT range; A2/Z2, A6: 100 mV/mT, 39-mT range; A3/Z3: 50 mV/mT, 79-mT range; A4/Z4: 25 mV/mT, 158-mT range.
- What is the sensing bandwidth of the DRV5056A3QDBZR?
The sensing bandwidth is 20 kHz.
- Does the DRV5056A3QDBZR support temperature compensation for magnet drift?
- What are the package options for the DRV5056A3QDBZR?
The device is available in surface-mount SOT-23 and through-hole TO-92 packages.
- What is the quiescent voltage offset of the DRV5056A3QDBZR?
The quiescent voltage offset is 0.6 V when no magnetic field is present.
- How does the ratiometric architecture of the DRV5056A3QDBZR benefit the application?
The ratiometric architecture minimizes error from VCC tolerance when the external analog-to-digital converter (ADC) uses the same VCC for its reference.
- What is the maximum operating current of the DRV5056A3QDBZR?
The maximum operating current is up to 10 mA.
- Is the DRV5056A3QDBZR RoHS and REACH compliant?
- What are some typical applications of the DRV5056A3QDBZR?
Typical applications include precise position sensing, industrial automation, home appliances, gamepads, height leveling, fluid flow rate measurement, and medical devices.
