DRV5057 High accuracy 3.3 V or 5 V digital PWM-output Hall effect sensor family | TI.com

DRV5057 (ACTIVE)

High accuracy 3.3 V or 5 V digital PWM-output Hall effect sensor family

High accuracy 3.3 V or 5 V digital PWM-output Hall effect sensor family - DRV5057
Datasheet
 

Description

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.

Features

  • 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: 2%D/mT, ±21-mT Range
    • A2: 1%D/mT, ±42-mT Range
    • A3: 0.5%D/mT, ±84-mT Range
    • A4: 0.25%D/mT, ±168-mT Range
  • Open-Drain Output With 20-mA Sink Capability
  • Compensation for Magnet Temperature Drift
  • Standard Industry Packages:
    • Surface-Mount SOT-23
    • Through-Hole TO-92

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Hall Effect Magnetic Field Calculator

Gauss
Rectangle Cylinder
rec

Calculated magnetic field B = 26.05 mT

Parametrics

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