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AH9246 Datasheet

ULTRA HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

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AH9246 pdf
AH9246
ULTRA HIGH SENSITIVITY
MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Description
Pin Assignments
The AH9246 is an ultra high sensitivity Hall-effect switch with internal
pull-up resistor on the output, designed for battery operated handheld
equipments to industrial applications.
A chopper stabilized architecture improves stability of magnetic switch
points over the whole operating range. A sleep-awake logic controls
the sleep and awake time to reduce the average operating current of
the device. During the awake time, the output is changed with the
magnetic flux density. During the sleep time, the output is latched in
its previous state and the current consumption reduces to 4µA typical
at 3V. The average current consumption is 8µA at 3V.
The output can be switched on with either north or south pole of
sufficient strength. If the magnetic flux density perpendicular to the
part marking surface is larger than operating point (BOP), the output
will be turned on; if it is less than releasing point (BRP), the output will
be turned off.
The AH9246 is available in industry standard TO92S and SC59
packages.
(Front View)
3
2
1
TO92S
(Top View)
GND
3
OUTPUT
GND
VDD
Features
Omnipolar Operation (Switching with North or South Poles)
Micropower Operation
Built in Pull-up Resistor on the Output
2.5V to 5.5V Power Supply
Stabilized Chopper
Superior Temperature Stability
Digital Output Signal
-40°C to +85°C Operating Temperature
ESD (HBM): 5000V
Small Low Profile Industry Standard SC59 and TO92S Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
12
VDD OUTPUT
SC59
Applications
Cover Switch in Notebook PC/PDA
Handheld Wireless Application Awake Switch
Magnet Switch in Low Duty Cycle Applications
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AH9246
Document number: DS38097 Rev.2 - 2
1 of 10
www.diodes.com
September 2015
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH9246 Datasheet

ULTRA HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

No Preview Available !

AH9246 pdf
Typical Applications Circuit
AH9246
100pF
21
OUTPUT VDD
AH9246
GND
3
10nF
2.5V to 5.5V
Pin Descriptions
TO92S
1
2
3
Pin Number
SC59
1
3
2
Functional Block Diagram
Sleep/Awake
Control
Pin Name
VDD
GND
OUTPUT
Function
Power supply pin
Ground pin
Output pin
VDD
1(1)
Timing
Logic
Bias
100k
Hall
Plate
A (B)
A for TO92S
B for SC59
+
-
Chopper
Comparator
2(3)
GND
3(2) OUTPUT
AH9246
Document number: DS38097 Rev.2 - 2
2 of 10
www.diodes.com
September 2015
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH9246 Datasheet

ULTRA HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

No Preview Available !

AH9246 pdf
AH9246
Absolute Maximum Ratings (Note 4) (@TA = +25°C, unless otherwise specified.)
Symbol
VDD
IDD
VOUT
IOUT
B
PD
TSTG
TJ
Parameter
Supply Voltage (Note 5)
Supply Current (Fault)
Output Voltage
Output Current
Magnetic Flux Density
Power Dissipation
Storage Temperature
Junction Temperature
ESD (Human Body Model) (Note 6)
ESD (Machine Model) (Note 6)
Rating
7
6
7
2
Unlimited
TO92S
SC59
-55 to +150
+150
5000
400
230
230
Unit
V
mA
V
mA
Gauss
mW
C
C
V
V
Notes:
4. Stresses greater than the 'Absolute Maximum Ratings' specified above may cause permanent damage to the device. These are stress ratings only;
functional operation of the device at these or any other conditions exceeding those indicated in this specification is not implied. Device reliability may be
affected by exposure to absolute maximum rating conditions for extended periods of time.
5. The absolute maximum VDD of 7V is a transient stress rating and is not meant as a functional operating condition. It is not recommended to operate the
device at the absolute maximum rated conditions for any period of time.
6. Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures
whenever handling semiconductor products.
Recommended Operating Conditions
Symbol
VDD
TA
Characteristic
Supply Voltage
Operating Temperature Range
Operating
Operating
Conditions
Min Max Unit
2.5 5.5 V
-40 +85 °C
Electrical Characteristics (Note 7) (@TA = +25°C, VDD = 3V, unless otherwise specified.)
Symbol
VDD
IDD_AW
Characteristic
Supply Voltage
Supply Current During “Awake”
Period
Conditions
Operating
Min Typ Max Unit
2.5 3 5.5 V
TA = -40 to +85C, VDD = 2.5V to 5.5V
1.8
3
mA
IDD_SL
Supply Current During “Sleep” Period TA = -40 to +85C, VDD = 2.5V to 5.5V
4 10 µA
IDD_AVG
IOUT
IOFF
VOL
VOH
tAW
tSL
D
fC
Average Supply Current
Output Current
Output Leakage Current
Output Low Voltage (On)
Output High Voltage (Off)
Awake Mode Time
Sleep Mode Time
Duty Cycle
Chopper Frequency
TA = -40 to +85C, VDD = 2.5V to 5.5V
VOUT = 5.5V, Output off
IOUT = 1.0mA
IOUT = -1.0mA
Operating
Operating
VDD-0.2
8
<0.1
VDD-0.1
150
100
0.15
15
15
1.0
1
0.4
µA
mA
µA
V
V
µs
ms
%
kHz
Note:
7. Parameters values over operating temperature range are not tested in production, they are guaranteed by design, process control and characterization.
The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
AH9246
Document number: DS38097 Rev.2 - 2
3 of 10
www.diodes.com
September 2015
© Diodes Incorporated




Part Number AH9246
Description ULTRA HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Maker Diodes
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