Diodes AH49E User Manual

Data Sheet

LINEAR HALL-EFFECT IC AH49E

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 pro­portion 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

85

C, appropriate for commercial, consumer and

industrial applications.

The AH49E is available in standard TO-92S and SOT­23-3 packages.

o

C to

Features

· Miniature Construction

· Power Consumption of 3.5mA at V

=5V for

CC

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 85oC

· 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

TO-92S

Figure 1. Package Types of AH49E

SOT-23-3

Aug. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited

1

Data Sheet

LINEAR HALL-EFFECT IC AH49E

Pin Configuration

Z3 Package

(TO-92S )

3

2

1

(Front View)

Figure 2. Pin Configuration of AH49E

Pin Description

Pin Number

TO-92S SOT-23-3

1 1 VCC Supply voltage

2 3 GND Ground pin

3 2 OUT Output

Pin Name Function

OUT

GND

VCC

N Package

(SOT-23-3 )

GND

3

VCC

(Top View)

21

OUT

Aug. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited

2

Data Sheet

LINEAR HALL-EFFECT IC AH49E

Functional Block Diagram

1 (1)

VCC

Sensor

A (B)
A for TO-92S
B for SOT-23-3

Ordering Information

Circuit Type

Packages

Z3: TO-92S

N: SOT-23-3

HALL

Figure 3. Functional Block Diagram of AH49E

Amplifier

AH49E -

3 (2)

65µA

Typ.

2 (3)

E1: Lead Free

G1: Green

Blank: Bulk

TR: Tape and Reel

OUT

GND

Package

TO-92S

SOT-23-3 AH49ENTR-G1 GJ1 Tape & Reel

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green package.

Temperature

Range

-40 to 85

o

C

Lead Free Green Lead Free Green

AH49EZ3-E1 AH49EZ3-G1 AH49E AH49G Bulk

Part Number Marking ID

Packing Type

Aug. 2010 Rev. 1. 3 BCD Semiconductor Manufacturing Limited

3