Hall voltage, a schmitt trigger to provide switching
hysteresis for noise rejection, and an open-collector
output. The bandgap regulator allows a wide
operating voltage range.
ATS137 is rated for operating temperature range
from -20°C to 85°C and voltage range from 3.5V to
20V.
Applications
- VCD/DVD loader, CD/DVD ROM
- Cover detector
- Speed measurement
- Home appliances
- Home safety
Ordering Information
ATS137 X - X X X - X
Magnetic
Characteristics
A or B
Single Hall-effect Switch
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP3
W: SOT23
Lead
L : Lead Free
Blank: Normal
Packing
Blank : Tube or Bulk
A : Tape & Reel
Typical Circuit
3.5V ~20V
Vcc
R
L
ATS
137
Vss
DO
Digital Output
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.A5 Jul 14, 2004
1/7
ATC
Single Hall Effect Switch
Functional Block Diagrams
Vcc
1
ATS137
Regulator
Hall
plate
Amp
3
DO
2
Vss
Pin Descriptions
137
2
Top view
137
1 : Vcc
1
3
2 : Vss
3 : DO
1
2
3
Name
Vcc
Vss
DO
P/I/O
P
P
O
Pin #
1
2
3
Description
Positive Power Supply
Ground
Digital Output
Anachip Corp.
www.anachip.com.tw
2/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Absolute Maximum Ratings
Characteristics
Supply voltage
Reverse Vcc Polarity Voltage
Magnetic flux density
Output OFF Voltage
Output “on” current
Continuous
Operating temperature
Storage temperature
Maximum Junction Temp.
SIP-3L
Package Power
Dissipation
SOT23-3L
( at Ta=25
o
C )
Symbol
V
CC
V
RCC
B
Vce
Ic
Ta
Ts
Tj
Pd
(Ta=+ 25°C)
Test Conditions
—
Vcc=14V, Ic=20mA
Vce=14V, Vcc=14V
Vcc=20V, Output Open
Vcc=14V, RL=820Ω,
CL=20pF
Vcc=14V, RL=820Ω,
CL=20pF
Min
3.5
-
-
-
-
-
Typ
-
300
<0.1
5
0.3
0.3
Max
20
700
10
10
1.5
1.5
Units
V
mV
uA
mA
us
us
Values
20
-20
Unlimited
30
25
-20~+85
-65~+150
175
400
200
V
mA
°C
°C
°C
mW
mW
Unit
V
V
ATS137
Electrical Characteristics
Characteristic
Supply voltage
Output saturation voltage
Output leakage current
Supply current
Output rise time
Output falling time
Symbol
Vcc
Vce(sat)
Icex
Icc
tr
tf
Test Circuit
14V
DO
RL
RL=820 Ohm
CL=20 pF
CL
Test Circuit
Anachip Corp.
www.anachip.com.tw
3/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Magnetic Characteristics (Ta=25
o
C)
(1mT=10Gauss)
A grade
Parameter
Operate Point
Release point
Hysteresis
B grade
Parameter
Operate Point
Release point
Hysteresis
Symbol
Bop
Brp
Bhys
Symbol
Bop
Brp
Bhys
Min.
-
10
-
Min.
-
10
-
Typ.
-
-
80
Typ.
-
-
80
Max.
100
-
-
Max.
130
-
-
Unit
Gauss
Gauss
Gauss
Unit
Gauss
Gauss
Gauss
ATS137
Application Information
-Operating principle
ATS137 is a three pins Hall Effect switch IC which can turn magnetic flux variety to digital output signal. In
other words, it is an interface from magnetic system to electrical one by Hall effect. The illustrations are shown
in Fig.1.
Vo
Vcc
B
hys
Magnet
Turn on
magnetic flux
(Gauss)
S
Turn off
Vce(sat)
Marking
side
B
rp
B
op
electrical
Fig.1 Hall-effect switch
Output driver is open-collector topology and maximum sink current (I
sink
) is 25mA. The illustrated circuit is
shown as Fig.2.
3.5V ~20V
Vcc
R
L
DO
Vo
ATS
137S
Vss
I
sink
Digital Output
Fig.2 Application circuit
Anachip Corp.
www.anachip.com.tw
4/7
Rev. A5 Jul 14, 2004
ATC
Single Hall Effect Switch
Application Information (Continued)
Vo will turn on(low) if the S magnetic flux larger than operation point (Bop), and turns off whenever the
magnetic flux is removed and lower than release point (Brp). The related waveforms are shown in Fig.3.
ATS137
magnetic flux (mT)
Bop
S
Marking side
Vo
Hall Effect switch
Vcc
Vce(sat)
t
t
Brp
Fig.3 Vo and magnetic flux variety
The major applications are for contactless switching and shown as follows:
-
VCD/DVD loader, CD/DVD ROM: Detect if the tray is opened or closed
1. Use the Bluetooth protocol to test the APP lighting and button detection. The official Demo always runs away during simulation. It is not easy to solve the problem and run it. The first step is to ...
We replaced the mobile DDR on the old 6410 development board with a normal DDR of DDR400 (downclocked), but it keeps running. Through tracing, we determined that it is a memory problem. I tried to mod...
[color=#333333][font=Helvetica, Tahoma, Arial, sans-serif][size=12px]Several methods to improve the reliability of RS-485 bus and common troubleshooting[/size][/font][/color] [url]https://download.eew...
I'm working on a low-level driver for arm recently, but I can't get the desired result no matter how I adjust it. The main reason is that I don't understand the hardware i/o reading and writing. I hop...
2021 is over. At the beginning of the year, I went to the operating room equipment room on duty according to work arrangements. This year, after continuous exploration, I summarized my own set of equi...
1 Introduction
A wide variety of communication cables and control cables are widely used in various instruments and control equipment. Whether the cable is well-conducted and
whether
th...[Details]
Analog engineers have traditionally struggled with complexity when designing power supplies that required multiple outputs, dynamic load sharing, hot-swap, or extensive fault-handling capabilities....[Details]
No matter which processor you are learning, the first thing you need to understand is the registers and working mode of the processor.
ARM has 37 registers, including 31 general registers and ...[Details]
The reason for the light decay of white LEDs: the decline of phosphor performance
So far, the rapid decline of the luminous performance of white light LEDs, especially low-power white light LE...[Details]
In the previous series, we have listed some basic knowledge of C language in Tables 1 to 3. We hope that beginners can strengthen their memory of the above tables and gradually learn to use them wh...[Details]
I. Introduction
Since RS232 has a short communication distance (only 15 meters according to EAT/TAI-232 standard), and can only perform point-to-point communication, it cannot directly f...[Details]
MediaTek (2454) announced the acquisition of F-MStar (3697) and attracted the attention of IC design industry. This morning, Gartner Semiconductor Industry Research Director Hong Cenwei analyzed ...[Details]
Digital array radar (DAR) uses digital beam forming (DBF) in both receiving and transmitting modes to achieve flexible distribution and reception of RF signal power in the airspace, obtain excellent t...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[Details]
Nippon Electric Works and Volvo Technology Japan have developed a wireless power supply system for electric vehicles (EVs). Using this system, the two companies have successfully conducted an exper...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
TC9012F is a universal CMOS large-scale integrated circuit for infrared remote control signal transmission, suitable for remote control of TV, VTR, laser player and other equipment. In the market, ...[Details]
Today, the value of electronic components in cars accounts for 15-20% of the total vehicle. In the future, this proportion may be as high as 30-40% as more safety electronics, fuel consumption and ...[Details]
Introduction
X1226 has the functions of clock and calendar. The clock relies on hour, minute and second registers to track, and the calendar relies on date, week, month and year registers to tr...[Details]
0 Introduction
Wireless Sensor Network (WSN) monitors the target by deploying a large number of sensor nodes in the target area. WSN realizes the positioning and tracking of the target, determi...[Details]
Development Kits Review Area
京公网安备 11010802033920号
EEWORLD
