SLVSDD5 August 2017 DRV5012

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Magnetic Characteristics
    7. 6.7Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Magnetic Flux Direction
      2. 7.3.2Magnetic Response
      3. 7.3.3Output Driver
      4. 7.3.4Sampling Rate
      5. 7.3.5SEL Pin
      6. 7.3.6Hall Element Location
    4. 7.4Device Functional Modes
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Applications
      1. 8.2.1BLDC Motor Sensors Application
        1. 8.2.1.1Design Requirements
        2. 8.2.1.2Detailed Design Procedure
        3. 8.2.1.3Application Curve
      2. 8.2.2Incremental Rotary Encoding Application
        1. 8.2.2.1Design Requirements
        2. 8.2.2.2Detailed Design Procedure
        3. 8.2.2.3Application Curve
    3. 8.3Do's and Don'ts
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Device Support
      1. 11.1.1Development Support
    2. 11.2Receiving Notification of Documentation Updates
    3. 11.3Community Resources
    4. 11.4Trademarks
    5. 11.5Electrostatic Discharge Caution
    6. 11.6Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Features

  • Industry-Leading Low-Power Consumption
  • Pin-Selectable Sampling Rate:
    • SEL = Low: 20 Hz Using 1.3 µA (1.8 V)
    • SEL = High: 2.5 kHz Using 142 µA (1.8 V)
  • 1.65- to 5.5-V Operating VCC Range
  • High Magnetic Sensitivity: ±2 mT (Typical)
  • Robust Hysteresis: 4 mT (Typical)
  • Push-Pull CMOS Output
  • Small and Thin X2SON Package
  • –40°C to +85°C Operating Temperature Range

Applications

  • Brushless DC Motor Sensors
  • Incremental Rotary Encoding:
    • Motor Speed
    • Mechanical Travel
    • Fluid Measurement
    • Knob Turning
    • Wheel Speed
  • Portable Medical Devices
  • E-Locks, E-Bikes, Motorized Blinds
  • Flow Meters
  • Contactless Activation

Description

The DRV5012 device is an ultra-low-power digital-latch Hall effect sensor with a pin-selectable sampling rate.

When a south magnetic pole is near the top of the package and the BOP threshold is exceeded, the device drives a low voltage. The output stays low until a north pole is applied and the BRP threshold is crossed, which causes the output to drive a high voltage. Alternating north and south poles are required to toggle the output, and integrated hysteresis separates BOP and BRP to provide robust switching.

Using an internal oscillator, the DRV5012 device samples the magnetic field and updates the output at a rate of 20 Hz or 2.5 kHz, depending on the SEL pin. This dual-bandwidth feature can allow systems to monitor changes in movement while using minimal power.

The device operates from a VCC range of 1.65 V to 5.5 V, and is packaged in a small X2SON.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
DRV5012X2SON (4)1.10 mm × 1.40 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.






Typical Schematic

DRV5012 sch.gif





Current Consumption in 20-Hz Mode

DRV5012 D016.gif