Overview
The DRV5056A2EDBZRQ1 is a linear Hall-effect sensor produced by Texas Instruments. This device is part of the DRV5056-Q1 family, which is qualified for automotive applications and meets the AEC-Q100 standards. It operates as a unipolar magnetic sensor, responding proportionally to the flux density of a magnetic south pole. The sensor is designed for accurate position sensing in various automotive and industrial applications.
The DRV5056A2EDBZRQ1 features a ratiometric architecture, which helps minimize errors from VCC tolerance, and includes temperature compensation to ensure linear performance across a wide temperature range of –40°C to 150°C. The device is available in two package options: SOT-23 (DBZ) and TO-92 (LPG), each with different sensing directions.
Key Specifications
| Parameter | Test Conditions | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|
| VCC (Power supply voltage) | Operating range | 3 | - | 5.5 | V |
| ICC (Operating supply current) | VCC = 3 V to 3.6 V and 4.5 V to 5.5 V | 6 | 10 | - | mA |
| TA (Operating ambient temperature) | - | -40 | - | 150 | °C |
| tON (Power-on time) | B = 0 mT, no load on OUT | 150 | 300 | - | µs |
| fBW (Sensing bandwidth) | - | - | - | 20 | kHz |
| td (Propagation delay time) | From change in B to change in OUT | 10 | - | - | µs |
| VQ (Quiescent voltage) | B = 0 mT, TA = 25°C | 0.54 | 0.6 | 0.66 | V |
| S (Sensitivity) | VCC = 5 V, TA = 25°C | 95 | 100 | 105 | mV/mT |
| BL (Linear magnetic sensing range) | VCC = 5 V, TA = 25°C | 39 | - | - | mT |
Key Features
- Unipolar Magnetic Response: The device responds to the flux density of a magnetic south pole, maximizing the output dynamic range in applications sensing one magnetic pole.
- Ratiometric Architecture: The sensor's output scales linearly with the power-supply voltage, minimizing errors from VCC tolerance when used with an external ADC referencing VCC.
- Temperature Compensation: The device compensates for magnet temperature drift, ensuring linear performance across a wide temperature range.
- Multiple Sensitivity Options: Four sensitivity options are available to maximize the output swing based on the required sensing range.
- Low Noise and High Accuracy: Features low output-referred noise and high sensitivity linearity within the specified output voltage range.
- Dual Power Supply Options: Operates from either 3.3-V or 5-V power supplies.
- Compact Packages: Available in SOT-23 (DBZ) and TO-92 (LPG) packages with different sensing directions.
Applications
- Automotive Position Sensing: Used in brake, acceleration, and clutch pedals, as well as in throttle position and height leveling systems.
- Torque Sensors and Gear Shifters: Employed in powertrain and transmission components for precise sensing.
- Current Sensing: Can be used for current sensing applications due to its linear response to magnetic fields.
- Industrial Automation: Suitable for various industrial automation tasks requiring accurate position and proximity sensing.
Q & A
- What is the operating temperature range of the DRV5056A2EDBZRQ1?
The device operates over an ambient temperature range of –40°C to 150°C.
- What are the power supply voltage options for the DRV5056A2EDBZRQ1?
The device can operate from either 3.3-V or 5-V power supplies.
- What is the typical quiescent voltage of the DRV5056A2EDBZRQ1?
The typical quiescent voltage is 0.6 V when no magnetic field is present.
- How does the ratiometric architecture of the DRV5056A2EDBZRQ1 benefit the application?
The ratiometric architecture minimizes errors from VCC tolerance, ensuring consistent output values when used with an external ADC referencing VCC.
- What is the purpose of temperature compensation in the DRV5056A2EDBZRQ1?
The temperature compensation adjusts the sensitivity to counteract the drift of magnets with temperature, ensuring linear performance across a wide temperature range.
- What are the available package options for the DRV5056A2EDBZRQ1?
The device is available in SOT-23 (DBZ) and TO-92 (LPG) packages.
- How does the sensitivity of the DRV5056A2EDBZRQ1 change with different power supply voltages?
The sensitivity scales linearly with the power-supply voltage, with a 5% increase when VCC changes from 5 V to 5.25 V, for example.
- What is the typical power-on time for the DRV5056A2EDBZRQ1?
The typical power-on time is 300 µs from when VCC crosses 3 V until the output is within 5% of the quiescent voltage.
- What is the sensing bandwidth of the DRV5056A2EDBZRQ1?
The sensing bandwidth is 20 kHz.
- How does the DRV5056A2EDBZRQ1 handle magnetic flux direction?
The device is sensitive to the magnetic field component perpendicular to the die inside the package, with magnetic flux from the bottom to the top considered positive.
