Texas Instruments DRV5056A2QDBZT High Accuracy 3.3V or 5V Ratiometric Unipolar Hall Effect Sensors can be used for accurate position sensing in a wide range of applications. The DRV5056A2QDBZT Hall Effect Sensor responds proportionally to the flux density of a magnetic south pole and operates from a 3.3V to 5V power supply. An unipolar magnetic response feature drives analog output of 0.6V when no magnetic field is present and increases when a south magnetic pole is applied. Applications that sense one magnetic pole further benefits from this magnetic response maximizing the output dynamic range. The output swing is further maximized with four magnetic sensitivity options of 200mV/mT, 20mT range; 100mV/mT, 39mT range; 50mV/mT, 79mT range; and 25mV/mT, 158mT range. Two package options are available, the surface-mount SOT-23 and the through-hole TO-92, offering different sensing directions. The ratiometric architecture minimizes errors from VCC tolerance when the external analog-to-digital converter (ADC) uses the same VCC for its reference. A magnetic temperature compensation counteracts how magnets drift for linear performance across a wide –40°C to +125°C temperature range.
Feature
- Unipolar linear hall effect magneticsensor
- Operates from 3.3-V and 5-V powersupplies
- Analog output with 0.6-V quiescentoffset:
- Maximizes voltage swing for high accuracy
- Magnetic sensitivity options(at VCC = 5 V):
- A1: 200 mV/mT,20-mT range
- A2: 100 mV/mT, 39-mT range
- A3: 50 mV/mT, 79-mT range
- A4: 25 mV/mT,158-mT range
- A6: 100 mV/mT, 39-mTrange
- Fast 20-kHz sensingbandwidth
- Low-noise output with ±1-mAdrive
- Compensation for magnet temperaturedrift
- Standard industry packages:
- Surface-mount SOT-23
- Through-holeTO-92
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DescriptionThe DRV5056 is a linear Hall effect sensor that respondsproportionally to flux density of a magnetic south pole. The device can be used for accurateposition sensing in a wide range of applications.
Featuring a unipolar magnetic response, the analog output drives 0.6 V when no magneticfield is present, and increases when a south magnetic pole is applied. This response maximizes theoutput dynamic range in applications that sense one magnetic pole. Four sensitivity options furthermaximize 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 thetop of the package is sensed, and the two package options provide different sensingdirections.
The device uses a ratiometric architecture that can minimize error fromVCC tolerance when the external analog-to-digital converter (ADC) uses thesame VCC for its reference. Additionally, the device features magnettemperature compensation to counteract how magnets drift for linear performance across a wide temperature range.
The A1 to A4 options support a temperature range of –40°C to +125°C. TheA6 version supports a temperature range of 0°C to 85°C.