Each Hall-effect integrated circuit includes a Hall
sensing
element,
linear
amplifier,
and
emitter-follower output stage. Having the Hall cell
and amplifier on a single chip minimizes problems
associated with handling tiny analog signals.
The device is rated for continuous operation over
the temperature range of -20°C to +85°C.
Application
- Gear tooth Sensor
- Notch Sensor
- Current Sensor
Pin Assignment
(Top View)
3. OUTPUT
2. GND
1. SUPPLY
(SIP3 package)
Pin Configuration
Name
SUPPLY
GND
OUTPUT
Description
Input power
Ground
Output stage
3. OUTPUT
GND 2.
1. SUPPLY
( SOT23 package)
Ordering Information
AH350 X - X X X
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
Lead
Packing
Blank : Tube
A : Taping
L : Lead Free
P: SIP-3L
W: SOT23-3L Blank: Normal
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.1 Jan 19, 2005
1/6
AH350
Linear Hall-Effect Sensors
Block Diagram
1 V
CC
REG.
X
3 OUTPUT
2 GND
Absolute Maximum Ratings
Parameter
Supply voltage
Magnetic flux density
Operating temperature range
Storage temperature range
Symbol
Vcc
B
Top
Tstg
Rating
8
Unlimited
-20~+85
-65~+150
Unit
V
Gauss
°C
°C
Electrical Characteristics
(at Ta = 25°C, Vcc=5V)
Characteristic
Supply Voltage
Supply Current
Quiescent Output Voltage
Sensitivity
Bandwidth (-3 dB)
Broadband Output Noise
Output Resistance
Symbol
Vcc
Icc
Vout
∆Vout
BW
Vout
Rout
Conditions
Min
4.5
－
2.35
1.4
－
－
－
Typ
－
5
2.60
1.8
23
90
50
Max
6.0
9
2.85
2.2
－
－
220
Unit
V
mA
V
mV/G
kHz
µV
Ω
B=0G
B=0G to ±900G
BW=10Hz to 10kHz
All output-voltage measurements are made with a voltmeter having an input impedance of at least 10 kΩ.
measured at most sensitive area of device located 1.15mm below from top side and 2.0mm from right side.
Magnetic flux density is
Anachip Corp.
www.anachip.com.tw
2/6
Rev 0.1 Jan 19, 2005
AH350
Linear Hall-Effect Sensors
Typical Performance Characteristics
Output Voltage as a Function of
Temperature
Sensitivity (mV/G)
Output Voltage (V)
4.5
3.5
2.5
1.5
-40
-20
0
25
Vcc=+5V
B=+500G
B=0G
B=-500G
5
4
3
2
1
0
Device Sensitivity as a Function of
Supply Voltage
Ta= +25deg.
sensitivity
Temperature ( C)
o
85
125
4.5
Supply Voltage(V)
5
5.5
6
Supply current as a
Function of Supply Voltage
5.4
4
Output Null Voltage as a Function of
Supply Voltage
B= 0G
Ta= +25deg.
Supply current (mA)
5.2
5
4.8
4.6
4.4
4.2
4.5
Output Voltage(V)
B=0G
Ta=+25deg
3.5
3
2.5
2
1.5
1
0.5
0
Icc
Output voltage
4.5
5
5.5
6
4.7
4.9
5.1
5.3
5.5
5.7
5.9
Supply voltage(V)
Supply Voltage(V)
Anachip Corp.
www.anachip.com.tw
3/6
Rev 0.1 Jan 19, 2005
AH350
Linear Hall-Effect Sensors
Function Descriptions
The output null voltage (B=0G) is nominally
one-half the supply voltage. A south magnetic
pole, presented to the branded face of the
Hall-effect sensor will drive the output higher than
the null voltage level. A north magnetic pole will
drive the output below the null level.
In operation, instantaneous and proportional
output-voltage levels are dependent on magnetic
flux density at the most sensitive area of the device.
Greatest sensitivity is obtained with a supply
voltage of 6V, but at the cost of increased supply
current and a slight loss of output symmetry. The
sensor’s output is usually capacitively coupled to an
amplifier that boosts the output above the millivolt
level.
In two applications shown, a permanent bias
magnet is attached with epoxy glue to the back of
the epoxy package. The presence of ferrous
material at the face of the package acts as a flux
concentrator.
The south pole of a magnet is attached to the back
of the package if the Hall-effect IC is to sense the
presence of ferrous material. The north pole of a
magnet is attached to the back surface if the
integrated circuit is to sense the absence of ferrous
material.
Calibrated linear Hall devices, which can be used to
determine the actual flux density presented to the
sensor in a particular application, are available.
The program has been tested on other boards and there is no problem. The pins are all connected. Now I am wondering if it is a problem with the crystal oscillator circuit or the reset circuit?
The cry...
Hello everyone, I have an IBM mobile hard disk, which was working fine yesterday. When I plugged it into the computer, I found 3 EXE files, so I deleted them casually. I also deleted the Recycled in t...
I am a headhunter in Beijing. I have a position for hardware R&D manager that I would like to recommend to you. This position requires experience in instrument or power-related hardware design, embedd...
introduction
In the discharge process of tokamak plasma physics, the study of rupture and sawtooth is of great significance. Rupture and sawtooth exist in most tokamaks. Rupture is a notew...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
The data collector of the automatic weather station is generally designed based on a single-chip microcomputer or a PC/104 bus controller. It has the characteristics of good compatibility with PC, low...[Details]
Capacitance Measurement
Used to verify that capacitors meet the manufacturer's specifications. For quality control, a group of capacitors may be placed in an environmental chamber and the cap...[Details]
Introduction
Automakers are working to reduce vehicle weight to reduce CO2 emissions and improve fuel efficiency. Designers are therefore seeking new technologies and design techniques that can...[Details]
hint:
The number of speakers and their spacing limit the sound field of a portable stereo system.
Spatial audio attempts to artificially recreate the experience of listening to sounds i...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
1 Basic Features
In computer control systems and various intelligent instruments and meters composed of single-chip microcomputers (or microprocessors), various external analog signals must be ...[Details]
The above is to use MB1404 as a stereo composite signal transmitter. You can use the internal high-frequency amplifier and oscillator or not! According to my experience, I still recommend beginners...[Details]
The invention of the steam engine ushered in the first conversion of internal energy and mechanical energy for mankind, and the birth of the internal combustion engine at the end of the 19th centur...[Details]
Cars equipped with xenon headlights are already common on the road. Whether they are standard equipment on high-end cars or embellishments on modified cars, xenon lamps are gradually becoming a sym...[Details]
With the popularity of digital appliances, rechargeable batteries can be seen everywhere in people's daily lives and have become one of the indispensable daily necessities.
This article gives ...[Details]
introduction
The core features of mobile value-added service products are mobility, immediacy and personalization. Mobile value-added services are a new service mode that is rapidly developing...[Details]
0 Introduction
PROFIBUS is an open digital communication system with a wide range of applications, which has been included in the international standards IEC 61158 and IEC 61784. Since the gen...[Details]
51mcu
京公网安备 11010802033920号
EEWORLD
