Data Sheet
LINEAR HALL EFFECT IC AH49H
Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited
General Description
The AH49H is a small, versatile linear Hall-effect
device that is operated by the magnetic field from a
permanent magnet or an electromagnet. The output
voltage is set by the supply voltage and varies in
proportion to the strength of the magnetic field.
The integrated circuitry features low noise output,
which makes it unnecessary to use external filtering
components. It also includes precision resistors to
provide increased temperature stability and accuracy.
The operating temperature range of these linear Hall
sensors is -40°C to 105°C, appropriate for
commercial, consumer, and industrial environments.
The AH49H is available in standard TO-92S-3 and
SOT-23-3 packages.
Features
• Miniature Construction
• Power Consumption of 2mA at V
CC
=3.3V for
Energy Efficiency
• Single Current Sourcing Output
• Linear Output for Circuit Design Flexibility
• Low Noise Output Virtually Eliminates the Need
• for Filtering
• A Stable and Accurate Output
• Temperature Range: -40°C to 105°C
• Responds to Either Positive or Negative Gauss
• The Maximum Instantaneous Supply Voltage
• Up to 50V
• High ESD Rating: 6000V (Human Body Model)
400V (Machine Model)
Application
• Current Sensing
• Motor Control
• Position Sensing
• Magnetic Code Reading
• Rotary Encoder
• Ferrous Metal Detector
• Vibration Sensing
• Liquid Level Sensing
• Weight Sensing
Figure 1. Package Types of AH49H
TO-92S-3 SOT-23-3
