Diodes AH49E - Manual

LINEAR HALL-EFFECT IC AH49E
Data Sheet
1
Aug. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
General Description
The AH49E 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 pro-
portion to the strength of the magnetic field.
The integrated circuitry features low noise output,
which makes it unnecessary to use external filtering. It
also includes precision resistors to provide increased
temperature stability and accuracy. The operating tem-
perature range of these linear Hall sensors is -40
o
C to
85 o
C , appropriate for commercial, consumer and
industrial applications.
The AH49E is available in standard TO-92S and SOT-
23-3 packages.
Features
· Miniature Construction
· Power Consumption of 3.5mA at V
CC
=5V 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 of -40 o C to 85 o C
· Responds to Either Positive or Negative Gauss
Applications
· Current Sensing
· Motor Control
· Position Sensing
· Magnetic Code Reading
· Ferrous Metal Detector
· Vibration Sensing
· Liquid Level Sensing
· Weight Sensing
Figure 1. Package Types of AH49E
TO-92S SOT-23-3