Code example or demo
Data sheet
DRV5057
- 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
- Magnetic sensitivity options (at VCC = 5 V):
- A1/Z1: 2%D/mT, ±21-mT range
- A2/Z2: 1%D/mT, ±42-mT range
- A3/Z3: 0.5%D/mT, ±84-mT range
- A4/Z4: 0.25%D/mT, ±168-mT range
- Open-drain output with 20-mA sink capability
- Compensation for magnet temperature drift for A1/A2/A3/A4 Versions and None for Z1/Z2/Z3/Z4 Versions
- Industry standard package:
- Surface-mount SOT-23
- Through-hole TO-92
The DRV5057 is a linear Hall effect sensor that responds proportionally to magnetic flux density. The device can be used for accurate position sensing in a wide range of applications.
The device operates from 3.3-V or 5-V power supplies. When no magnetic field is present, the output produces a clock with a 50% duty cycle. The output duty cycle changes linearly with the applied magnetic flux density, and four sensitivity options maximize the output dynamic range based on the required sensing range. North and south magnetic poles produce unique outputs. The typical pulse-width modulation (PWM) carrier frequency is 2 kHz.
Magnetic flux perpendicular to the top of the package is sensed, and the two package options provide different sensing directions.
Because the PWM signal is based on edge-to-edge timing, signal integrity is maintained in the presence of voltage noise or ground potential mismatch. This signal is suitable for distance transmission in noisy environments, and the always-present clock allows the system controller to confirm there are good interconnects. Additionally, the device features magnet temperature compensation to counteract how magnets drift for linear performance across a wide –40°C to +125°C temperature range. Device options for no temperature compensation of magnet drift are also available.
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Evaluation board
DRV5055-5057EVM — DRV5055, DRV5056 and DRV5057 linear Hall effect sensor evaluation module
TheDRV505x is a linear Hall Effect magnetic-sense solution that provides ease of use and high performance. The DRV5055-5057EVM is intended to provide basic functional evaluation of this device family. The fixture layout is not intended to be a model for the target circuit, nor is it laid out for (...)
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Supported products & hardware
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOT-23 (DBZ) | 3 | Ultra Librarian |
| TO-92 (LPG) | 3 | Ultra Librarian |
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