Diodes AH49H User Manual
LINEAR HALL EFFECT IC AH49H
Data Sheet
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
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)
=3.3V for
CC
Application
• Current Sensing
• Motor Control
• Position Sensing
• Magnetic Code Reading
• Rotary Encoder
• Ferrous Metal Detector
• Vibration Sensing
• Liquid Level Sensing
• Weight Sensing
TO-92S-3 SOT-23-3
Figure 1. Package Types of AH49H
Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited
Data Sheet
LINEAR HALL EFFECT IC AH49H
Pin Configuration
Z3 Package N Package
(TO-92S-3) (SOT-23-3)
3
2
1
(Front View) (Top View)
Figure 2. Pin Configuration of AH49H
OUT
GND
VCC
GND
3
21
VCC OUT
Pin Description
Pin Number
TO-92S-3 SOT-23-3
1 1 VCC Power supply pin
2 3 GND Ground pin
3 2 OUT Output pin
Pin Name Function
Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited
Data Sheet
LINEAR HALL EFFECT IC AH49H
Functional Block Diagram
Figure 3. Functional Block Diagram of AH49H
Ordering Information
AH49H -
Circuit Type
Package
Z3: TO-92S-3
N: SOT-23-3
G1: Green
Blank: Bulk
TR: T ape & Reel
Package
TO-92S-3
SOT-23-3 AH49HNTR-G1 GT7 Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" in the part number, are RoHS compliant and
green.
Temperature
Range
-40 to 105°C
Part Number Marking ID Packing Type
AH49HZ3-G1 49HG Bulk
Jun. 2013 Rev. 1.2 BCD Semiconductor Manufacturing Limited
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