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AH1815 Datasheet

LOW SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

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AH1815 pdf
AH1815
LOW SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Description
The AH1815 is a low-sensitivity, micro-power Omnipolar Hall effect
switch IC, designed for portable and battery powered consumer
equipment for home appliance and industrial applications such as
smart-meter magnetic-tamper detection. Based on two sensitive Hall
effect plates and a chopper-stabilized architecture, the AH1815
provides a reliable solution over the whole operating range. To
support portable and battery powered equipment, the design has
been optimized to operate over the supply range of 2.5V to 5.5V and
consumes only 24µW with a supply of 3V.
The single open drain output can switch on with either a north or
south pole of sufficient strength. When the magnetic flux density (B)
perpendicular to the package is larger than operate point (Bop) the
output is switched on (pulled low). The output is turned off when
B becomes lower than the release point (Brp). The output will remain
off when there is no magnetic field.
Pin Assignments
TOP View)
GND 2
SC59
3 OUTPUT
1 VDD
Features
Omnipolar (north or south pole) Operation
Low Sensitivity
Single Open Drain Output
Micropower Operation
2.5V to 5.5V Operating Range
Chopper Stabilized Design Provides
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
Good RF Noise Immunity
-40°C to +125°C Operating Temperature
ESD (HBM) > 6KV
Industry Standard SC59 Package
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Doors, Lids, Covers and Tray Position Detect Switches
Display Switch for Portable PCs and Tablets
On/Off Switch for PDAs and Digital Cameras
Liquid Level Detection for Coffee Machines
Smart Meters
Position, Proximity and Level Detection Contactless Switch in
Battery Powered Consumer, Home Appliances and Industrial
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.
AH1815
Document number: DS37970 Rev. 1 - 2
1 of 8
www.diodes.com
May 2015
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1815 Datasheet

LOW SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

No Preview Available !

AH1815 pdf
Typical Applications Circuit
2.5V to 5.5V
VDD
RL
OUTPUT
CIN AH1815
GND
Note:
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF to 100nF.
RL is the pull-up resistor, the recommended resistance is 10kΩ to 100k.
AH1815
Pin Descriptions
Package: SC59
Pin
Number
1
2
3
Pin
Name
VDD
GND
OUTPUT
Function
Power Supply Input
Ground
Output
Functional Block Diagram
VDD
Hall
Plate
Hall
Plate
Amp
Amp
Sleep/Awake Logic
and Power Switch
Latch
Latch
Output
Driver
Controller
OUTPUT
GND
AH1815
Document number: DS37970 Rev. 1 - 2
2 of 8
www.diodes.com
May 2015
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1815 Datasheet

LOW SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

No Preview Available !

AH1815 pdf
AH1815
Absolute Maximum Ratings (Note 5) (@TA = +25°C, unless otherwise specified.)
Symbol
VDD
VOUT
VDD REV
VOUT_REV
IOUTPUT
B
PD
Ts
TJ
ESD HBM
Parameter
Supply Voltage (Note 6)
Output Pin Voltage (Note 6)
Reverse Supply Voltage
Reverse Output Pin Voltage
Output Current (source and sink)
Magnetic Flux Density
Package Power Dissipation
Storage Temperature Range
Maximum Junction Temperature
Human Body Model ESD capability
SC59
Values
7
7
-0.3
-0.3
2.5
Unlimited
230
-65 to +150
+150
6
Unit
V
V
V
V
mA
mW
°C
°C
kV
Notes:
5. 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.
6. 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.
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Symbol
VDD
VOUT_MAX
TA
Characteristic
Supply Voltage
Maximum Output Pin Voltage
Operating Temperature Range
Operating
Operating
Operating
Conditions
Rating
2.5 to 5.5
5.5
-40 to +125
Unit
V
V
°C
Electrical Characteristics (@TA = +25°C, VDD = 3V, unless otherwise specified.)
Symbol
VOUT_ON
Ioff
Characteristic
Output On Voltage
Output Leakage Current
IDD (awake)
IDD (sleep)
Supply Current
IDD (sleep)
IDD (avg)
Tawake
Tperiod
D.C.
Average Supply Current
Awake Time
Period
Duty Cycle
Conditions
IOUT = 1mA
VOUT = 5.5V, Output off
During awake period,
TA = +25°C, VDD = 3V
During awake period,
TA = -40°C to +125°C, VDD = 2.5V to 5.5V
During sleep period,
TA = +25°C, VDD = 3V
During sleep period,
TA = -40°C to +125°C, VDD = 2.5V to 5.5V
TA = +25°C, VDD = 3V
TA = -40°C to +125°C, VDD = 2.5V to 5.5V
(Note 7)
(Note 7)
Min Typ
0.1
< 0.1
3
3
5
——
8
——
75
75
0.1
Max
0.3
1
6
Unit
V
µA
mA
12 mA
10 µA
28 µA
16 µA
40 µA
125 µs
125 ms
%
Note:
7. When power is initially turned on, the operating VDD must be within its correct operating range (2.5V to 5.5V) to guarantee the output sampling.
The output state is valid after the second operating cycle (typical 150ms).
IDD(awake)
IDD(avg)
IDD(sleep)
0
Tperiod
Tawake
Tsleep
Sample and output
latched
AH1815
Document number: DS37970 Rev. 1 - 2
3 of 8
www.diodes.com
May 2015
© Diodes Incorporated




Part Number AH1815
Description LOW SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Maker Diodes
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