AH50y 單極磁感測器

Introduction

AH50y family consists of different Hall switches produced in BCDMOS technology. All Hall sensors include a temperature-compensated Hall plate with active offset compensation, a comparator, and an output driver. The family consists of 3-wire devices, the corresponding output driver being an open-drain output transistor and a current source respectively. The comparator compares the actual magnetic flux with the fixed reference values (switching points). Accordingly the output transistor is switched on or off in 3-wire version. The active offset compensation  leads  to  constant  magnetic  characteristics  over  supply  voltage  and  temperature  range.  In addition, the magnetic parameters are robust against mechanical stress effects.

The sensors are designed for industrial and automotive applications and operate with supply voltages from 2.7 V to 30V in ambient temperature range from -40 °C up to 150 °C.

The family AH50y is available in SOT23-3L and the leaded version TO92S packages.

Features

 SOT23-3L and TO92S packages
 Low current consumptions of typ. 2.5 mA
 Operates from 2.7 V to 30 V supply voltage
 Overvoltage protection capability up to 40 V
 Highest ESD performance up to ±12 kV
 Short-circuit   protected   open-drain   output   and thermal shut down for 3-wire applications
 Magnetic   characteristics   are   robust   regarding mechanical stress effects
 Constant  switching  points  over  a  wide  supply voltage and temperature range
 Wide operating temperature range from    -40 °C to 150 °C
 The decrease of magnetic flux density caused by rising   temperature   in   the   sensor   system   is compensated by a built-in negative temperature coefficient of the magnetic characteristics
 Reverse-voltage protection at Vcc pin
 Ideal sensor for applications in extreme automotive and industrial environments
 Qualified according to AEC-Q100 test standard for automotive  electronics  industry  to  provide  the highest quality expectation
 
Applications

 Speed and RPM sensing
 Tachometer, counter pickup
 Flow-rate sensing
 Brushless dc motor commutation
 Motor and fan control
 Robotics control
 Proximity sensor
 Position sensor
 Seat position detection
 Seat belt buckles
 Hood/trunk/door latches
 Sun roof/convertible top/tailgate/liftgate actuation
 Brake/clutch pedals
 Electric power steering (EPS)
 Transmissions and shift selectors
 Wiper motor

Package

SOT23-3L          TO92

Contents

Section
 

Title
 

Page
 

SECTION        Title                                         Page
1.              AH50y Family Overview                     3
2.             Ordering Information                          5 
2.1            Marking Code                                    6
2.2    Operating Ambient Temperature Range       6
2.3    Hall Sensor Package Codes                        6
3.      Functional Description                               6
4.      Diagnostic Features                                   7
5.      Specifications                                            8
5.1     Outline Dimensions                                    8
5.2     Pin assignment                                         10
5.3     Absolute Maximum Ratings                        10
5.4     ESD and Latch-up                                     11
5.5     Recommended Operating Conditions           11
5.6     Characteristics                                          12
5.7     Magnetic Characteristics Overview              13
6.      Magnetoelecric conversion characteristics    13
7.      Application circui                                        14
8.      Data Sheet History                                      15
 

1.   AH5xy Family Overview