DRV5056 High Accuracy 3.3 V or 5 V Ratiometric Unipolar Hall Effect Sensor Family | TI.com

DRV5056 (ACTIVE)

High Accuracy 3.3 V or 5 V Ratiometric Unipolar Hall Effect Sensor Family

 

Description

The DRV5056 is a linear Hall effect sensor that responds proportionally to flux density of a magnetic south pole. The device can be used for accurate position sensing in a wide range of applications.

Featuring a unipolar magnetic response, the analog output drives 0.6 V when no magnetic field is present, and increases when a south magnetic pole is applied. This response maximizes the output dynamic range in applications that sense one magnetic pole. Four sensitivity options further maximize 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 the top of the package is sensed, and the two package options provide different sensing directions.

The device uses a ratiometric architecture that can minimize error from VCC tolerance when the external analog-to-digital converter (ADC) uses the same VCC for its reference. 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.

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:
    • 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
  • Fast 20-kHz Sensing Bandwidth
  • Low-Noise Output With ±1-mA Drive
  • Compensation For Magnet Temperature Drift
  • Standard Industry Packages:
    • Surface-Mount SOT-23
    • Through-Hole TO-92

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Parametrics Compare all products in Linear Hall effect sensors

 
Type
Supply Voltage (Vcc) (Min) (V)
Supply Voltage (Vcc) (Max) (V)
Output
Accuracy (%)
Rating
Sensitivity (Typ) (mV/mT)
Operating temperature range (C)
DRV5056 DRV5053 DRV5055 DRV5057
Ratiometric Unipolar     Bipolar     Ratiometric Bipolar     Ratiometric PWM Output    
3     2.5     3     3    
5.5     38     5.5     5.5    
0.6 V to Vcc     0.2 V to 1.8 V     0.2 V to Vcc     8 %D to 92 %D    
5     70     5     6    
Catalog     Catalog     Catalog     Catalog    
25
50
100
200    
-11
-23
-45
-90
+23
+45    
12.5
25
50
100    
 
-40 to 125     -40 to 125     -40 to 125     -40 to 125    

Design tool

Hall Effect Magnetic Field Calculator

Gauss
Rectangle Cylinder
rec

Calculated magnetic field B = 26.05 mT