Diodes AH183 User Manual
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
• Lead Free packages: SIP-3L and SC59 (Commonly
known as SOT23 in Asia)
• SIP-3L and SC59: Available in “Green” Molding
Compound (No Br, Sb)
• Lead Free Finish / RoHS Compliant (Note 1)
Applications
• Cover detector
• Speed measurement
• Home safety
General Description
AH182/AH183 is a three-terminal Hall effect sensor device with
an output driver, mainly designed for battery–operation,
hand-held equipment (such as cellular and cordless phones, and
PDA’s) 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
SIP-3L but the north pole of sufficient strength will turn the output
on in SC59 package. The output will be turned off under no
magnetic field.
While the magnetic flux density (B) is larger than operation point
(Bop), the output will be turned on (low), the output is held until
B is lower than the release point (Brp), then turned off. The
difference between AH182 and AH183 is that the former
consumes less power than that of the latter in the Hall sensor
operation.
Typical Circuit *
* C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF.
is the pull-up resistor, the recommended resistance is 10Kohm~100Kohm.
R
L
2.5~5.5V
R
L
C
Output
AH182/AH183
Gnd
AH182/AH183 Rev. 8 1 of 10 NOVEMBER 2009
DS31024
www.diodes.com © Diodes Incorporated
Ordering Information
AH182/AH183
LOW POWER HALL EFFECT SWITCH
AH182 / AH183 - X X - X
Packing
A : Ammo Box (Note 3)P : SIP-3L
B : Bulk (Note 4)
7 : Tape & Reel
Part
Quantity
Suffix
Part
Number
Suffix
W : SC59
(Note 2)
Package
Quantity
Bulk 7” Tape and Reel Ammo Box
Number
Suffix
CMOS Hall-effect Switch
Device
AH182/AH183-PL-A P SIP-3L NA NA NA NA 4000/Box -A
AH182/AH183-PL-B P SIP-3L 1000 -B NA NA NA NA
AH182/AH183-PG-A P SIP-3L NA NA NA NA 4000/Box -A
AH182/AH183-PG-B P SIP-3L 1000 -B NA NA NA NA
AH182/AH183-WL-7 W SC59 NA NA 3000/Tape & Reel -7 NA NA
AH182/AH183-WG-7 W SC59 NA NA 3000/Tape & Reel -7 NA NA
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
3. Ammo Box is for SIP-3L Spread Lead.
4. Bulk is for SIP-3L Straight Lead.
Package
Code
Packaging
L : Lead Free
G : Green
Part
Lead Free
Quantity
Number
Pin Assignments
(1) SIP-3L (2) SC59 (Commonly known as SOT23 in Asia)
(Top view)
(Top view)
3.
Output
3. Output
2. GND
1. Vdd
GND 2.
1. Vdd
Pin Description
Pin Name P/I/O Pi n # Description
Vdd P/I 1 Power Supply Input
GND P 2 Ground
Output O 3 Output Pin
AH182/AH183 Rev. 8 2 of 10 NOVEMBER 2009
DS31024
www.diodes.com © Diodes Incorporated
)
S
Block Diagram
1
Vdd
Reg./Switch
Hall Plate
AH182/AH183
LOW POWER HALL EFFECT SWITCH
Output
Offset Cancelling
Logical
Amp
3
Gnd
2
Absolute Maximum Ratings (T
Symbol Parameter Rating Unit
Vdd Supply Voltage 7 V
B Magnetic Flux Density Unlimited
I
Output current 10 mA
OUT
PD
T
J(MAX
TST Storage Temperature Range -65 to +150
Power Dissipation
Maximum Junction Temperature 150
Recommended Operating Conditions (T
Symbol Parameter Conditions Min
Vdd
TA Operating Ambient Temperature Operating -40
upply Voltage Operating 2.5 5.5 V
= 25°C)
A
SIP-3L 550 mW
SC59 230 mW
= 25°C)
A
Max
85
°C
°C
Unit
°C
AH182/AH183 Rev. 8 3 of 10 NOVEMBER 2009
DS31024
www.diodes.com © Diodes Incorporated
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