AH182/AH183
Low power Hall Effect Switch
Features
- Micropower operation
- 2.5V to 5.5V battery operation
- Offset Canceling Technology
- Superior temperature stability
- Extremely Low Switch-Point Drift
- Insensitive to Physical Stress
- -40°C to 85°C operating temperature
- SIP3/SOT23 package
General Description
AH182/AH183 is a three-terminal Hall effect sensor
device with a output driver, mainly designed for
battery–operation, hand-held equipment(such as
Cellular and cordless Phone, PDA) The total
operation power is down to 15uW in the 2.75V
supply.
The south pole of sufficient strength will turn the
output on in SIP3 but the north pole of sufficient
strength will turn the output on in SOT23 package.
The output will be turned off under no magnetic
field.
While the magnetic flux density
(B)
is larger than
operate point
(Bop),
the output will be turned on
(low), the output is latched until
B
is lower than
release point
(Brp),
then turned off that. The
difference between AH182 and AH183 is the former
consumes less power than that of the latter in the
Hall sensor operation.
Applications
- Cover detector
- Speed measurement
- Home safety
Pin Assignments
(Top View)
3. Output
2. GND
1. Vdd
(SIP3 package)
Pin Descriptions
Name
Vdd
GND
Output
P/I/O
P/I
P
O
Pin #
1
2
3
Description
Power Supply Input
Ground
Output Pin
3. Output
GND 2.
1. Vdd
( SOT23 package)
Ordering Information
AH182/AH183 X - X X X
CMOS Hall-effect Switch
Wafer Body
Blank or
A~Z : if necessary
to specify
Package
P: SIP3
W: SOT23
Lead
L : Lead Free
Packing
Blank : Bulk
A : Tape & Reel
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. 1.2 Jan. 09, 2006
1/7
AH182/AH183
Low power Hall Effect Switch
Block Diagram
1
Vdd
Reg./Switch
Output
Hall Plate
3
Amp
Latch
Gnd
Offset Cancelling
2
Typical Circuit
2.5~5.5V
Vdd
AH182/
AH183
Gnd
Output
R
L
Digital
Output
Absolute Maximum Ratings
Characteristics
Supply Voltage
Magnetic Flux Density
Operating Temperature Range
Storage Temperature Range
Package Power Dissipation
Maximum Junction Temp
Output current
(Ta = 25°C)
Symbol
Vdd
B
Ta
Ts
SIP3
PD
SOT23-3
Tjc
Io
Values
7
Unlimited
-40 to +85
-65 to +150
550
230
150
10
Unit
V
°C
°C
mW
mW
°C
mA
Anachip Corp.
www.anachip.com.tw
2/7
Rev. 1.2 Jan. 09, 2006
AH182/AH183
Low power Hall Effect Switch
Electrical Characteristics
Characteristic
Supply Voltage
Output On Voltage
Output Leakage Current
Supply Current
Awake Time
Period
Duty Cycle
Symbol
Vdd
Vout
Ioff
Idd(en)
Idd(dis)
Idd(avg)
Idd(avg)
Tawake
Tperiod
D.C.
( Ta = +25°C, Vdd = 3V )
Conditions
Operating
Iout=1mA
Vout=5.5V, B < Brp
Chip enable
Chip disable
AH182:average supply current
AH183:average supply current
AH182
AH183
AH182
AH183
Min
2.5
-
-
-
-
-
-
-
-
-
-
-
Typ
3
0.1
<0.1
-
-
5
280
50
50
200
0.1
25
Max
5.5
0.3
1
2.0
8.0
10
500
100
100
400
-
-
Unit
V
V
µA
mA
uA
uA
uA
µs
ms
us
%
%
Test Circuit
)
182/183
1
3V
2
3
Anachip Corp.
www.anachip.com.tw
3/7
(recommended:50k
Pull up resistor
Rev. 1.2 Jan. 09, 2006