APX9131
Hall Effect Micro Switch IC
Features
•
•
•
•
•
Micro Power Operation for Battery Applications
Chopper Stabilized Amplifier
Independent of North or South Pole Magnet,
Easy for Manufacture
Small Size Package
Lead Free Available (RoHS Compliant)
General Description
The APX9131 integrated circuit is an ultra-sensitive,
pole independent Hall-effect switch with a latched
digital output. 2.5 volt to 3.5 volt operation and a unique
clocking scheme reduce the average operating power
requirements. Either a north or south pole of sufficient
flux will turn the output on; in the absence of a magnetic
field, the output is off. The polarity independence and
minimal power requirement allow this device to be
easily replaced reed switch for superior for signal
conditioning. Advanced CMOS processing is used to
take adv antage of low-voltage and low-power
requirements, SOT-23 and TO-92 packages provide an
optimized package for most applications.
Applications
•
•
•
•
Micro Switch
Handheld Wireless Application Wake Up Switch
Clamp Shell Type Application Switch
Magnet Switch in Low Duty Cycle Applications
Pin Description
GND
APX9131
1 : V
DD
2 : GND
3 : V
OUT
1 2 3
TO-92M3 Front View
VDD
VOUT
Ordering Information
APX9131
Lead Free Code
Handling Code
Temp. Range
Package Code
APX9131 A/AT:
X31X
X: Date Code
SOT-23
Package Code
A: SOT-23
AT : SOT-23 Thin
E : TO-92M3
Operating Ambient Temp. Range
I : -40 to 85
°
C
Handling Code
TR : Tape & Reel
Lead Free Code
L : Lead Free Device
Blank : Original Device
APL9131 E:
APX
9131
XXXXX
XXXXX - Date Code
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate
termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering
operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C
for MSL classification at lead-free peak reflow temperature.
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.7 - Sep., 2005
1
www.anpec.com.tw
APX9131
Function Pin Descriptions
No
1
Name
V
DD
Function
Power Input
When a magnetic field enters the hall element and exceeds the operate point
B
OPS
(or less than B
OPN
) the output turns on (output is low). When the magnetic
field is below the release point B
RPS
(or above B
RPN
), the output turns off (output
is high). It is design with open drain configuration and connecting a pull up
resistor from V
OUT
to V
DD
is necessary
.
It cannot be floating.
Ground Connection
2
V
OUT
3
GND
Block Diagram
VDD
Awake & Sleep
Timing Logic
VOUT
Hall Plane
Dynamic Offset
Cancellation
Latch
Circuit
Chopper
Amplifier
Hysteresis
Control
GND
Typical Applications
50K
Ω
V
OUT
V
DD
+
2.5V-3.5V
0.1uF
APX9131
GND
-
SOT-23 (Top View)
Copyright
©
ANPEC Electronics Corp.
Rev. A.7 - Sep., 2005
2
www.anpec.com.tw
APX9131
Absolute Maximum Ratings
Symbol
V
DD
V
OUT
T
J
T
STG
Parameter
Supply Voltage
Output Voltage
Junction Temperature Range
Storage Temperature Range
(T
A
= 25°C unless otherwise noted)
Rating
5
5
150
-65 to +150
Unit
V
V
°
C
Electrical Characteristics
Symbol
V
DD
I
DD
I
OFF
V
OL
t
awake
t
period
d.c.
f
c
Characteristic
Supply Voltage Range
Supply Current
(T
A
= 25°C, V
DD
=3V unless otherwise noted)
APX9131
Min.
2.5
5
1.2
2
20
180
60
0.3
11
Typ.
Max.
3.5
10
2
8
1.0
40
Test Condition
Operating
Average
Awake
sleep
V
OUT
= 3.5V, B
RPN
<B<B
RPS
I
SINK
= 1mA
Unit
V
µ
A
mA
µA
µA
mV
µ
s
mS
%
KHz
Output Leakage Current
Output Low Voltage
Wake up Time
Period
Duty Cycle
Chopping Frequency
Magnetic Characteristics
(T
A
= 25°C, V
DD
=3V unless otherwise noted)
Symbol
B
OPS
B
OPN
B
RPS
B
RPN
B
hys
Characteristic
Test Condition
APX9131
Min.
-75
10
Typ.
50
-50
35
-35
15
-10
Max.
75
Unit
G
G
G
G
G
Operate Points
Release Points
Hysteresis
Copyright
©
ANPEC Electronics Corp.
Rev. A.7 - Sep., 2005
3
www.anpec.com.tw
APX9131
Typical Characteristics
Switching Points vs. Ambient Temperature
80
60
B
OPS
Switching Points vs. Supply Voltage
80
T
A
=25
°
C
60
B
OPS
Switching Points (G)
40
B
RPS
Switching Points (G)
40
B
RPS
20
0
-20
-40
-60
-80
-40
-20
0
20
40
60
80
100
B
OPN
B
RPN
20
0
-20
-40
B
OPN
B
RPN
-60
2.5
3
3.5
4
4.5
5
Ambient Temperature (°C)
Supply Voltage (V)
Average Supply Current vs. Ambient Temperature
10
Average Supply Current vs.Supply Voltage
20
18
16
14
12
10
8
6
4
2
0
2.5
3
3.5
4
4.5
5
T
A
=25
°
C
Average Supply Current (uA)
8
6
4
2
0
-40
-20
0
20
40
60
80
100
Ambient Temperature (°C)
Average Supply Current (uA)
Supply Voltage (V)
Copyright
©
ANPEC Electronics Corp.
Rev. A.7 - Sep., 2005
4
www.anpec.com.tw
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