Texas Instruments TMAG511x/TMAG511x-Q1 Dual Hall-Effect Latches

Texas Instruments TMAG511x/TMAG511x-Q1 2-Dimensional Dual Hall-Effect Latches operate from a 2.5V to 38V power supply. Designed for high-speed and high-temperature motor applications, these devices are optimized for applications leveraging rotating magnets. Integrating two sensors and two separate signal chains, the TMAG511x/TMAG511x-Q1 offers two independent digital outputs, giving speed and direction calculation (TMAG5111) or giving directly the digital output of each independent latches (TMAG5110). This high level of integration allows the use of a single TMAG511x/TMAG511x-Q1 device instead of two separate latches.

The device is offered in a standard 3mT operating point and a high-sensitivity 1.4mT operating point. The higher magnetic sensitivity provides flexibility in low-cost magnet selection and mechanical component placement. The Texas Instruments TMAG511x/TMAG511x-Q1 is also available in three 2-axis combination options (X-Y, Z-X, Z-Y) to allow flexible placement of the sensor relative to the magnet. The device performs consistently across a wide ambient temperature range of –40°C to +125°C. The TMAG511x-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • 2D sensing with planar and vertical hall sensors
  • Inherent quadrature independent of magnet alignment or magnet pole pitch
  • Two functional options are available
    • TMAG5110/TMAG5110-Q1 – independent 2D outputs
    • TMAG5111/TMAG5111-Q1 – speed and direction outputs
  • Ultra-high magnetic sensitivity
    • TMAG511xx2/TMAG511xx2-Q1 – ±1.4mT (typical)
    • TMAG511xx4/TMAG511xx4-Q1 – ±3mT (typical)
  • Fast 40kHz sensing bandwidth
  • 2.5V to 38V operating VCC range
  • Open-drain output (10mA sink)
  • Wide ambient operating temperature range
    • –40°C to +125°C
  • Protection Features
    • Reverse Supply Protection (up to –20V)
    • The device survives up to 40V
    • Output short-circuit protection
    • Output current limitation

Applications

  • Incremental rotary encoding
  • Linear speed and direction control
    • Motorized window blinds and shades
    • Motorized garage door
  • Angular position detection
    • Knob control
    • Fluid measurement
  • Angular speed and direction
    • Electric pumps
    • Blower fans
    • Wheel and motor speed

Functional Block Diagram

Block Diagram - Texas Instruments TMAG511x/TMAG511x-Q1 Dual Hall-Effect Latches

Texas Instruments TMAG511x/TMAG511x-Q1 Dual Hall-Effect Latches