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Diodes Semiconductor Electronic Components Datasheet

AH1893 Datasheet

HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

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AH1893 pdf
AH1893
HIGH SENSITIVITY MICROPOWER
OMNIPOLAR HALL-EFFECT SWITCH
Description
The AH1893 is a high sensitivity micropower Omnipolar Hall effect
switch IC with internal pull up and pull down capability. Designed for
portable and battery powered equipment such as cellular phones and
portable PCs to home appliances and industrial applications, the
average supply current is only 4.3µA at 1.85V. To support potable
equipment the AH1893 can operate over the supply range of 1.6V to
3.6V and uses a hibernating clocking system to minimize the power
consumption. To minimize PCB space the AH1893 is available in
small low profile X1-DFN1216-4 and SOT553 packages.
The output is activated with either a north or south pole of sufficient
magnetic field strength. When the magnetic flux density (B)
perpendicular to the package is larger than operate point (Bop), the
output will be turned on (pulled low) and held until B is lower than
release point (Brp).
Features
Omnipolar Operation (North or South pole)
Supply Voltage of 1.6V to 3.6V
High Sensitivity
Micropower Operation
Chopper Stabilized Design Provides
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Physical Stress
No External Pull-up Resistors Required
Good RF Noise Immunity
-40°C to +85°C Operating Temperature
High ESD capability of 8kV (Human Body Model)
Small Low Profile SOT553 and X1-DFN1216-4 Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Top View)
X1-DFN1216-4
(Top View)
SOT553
Applications
Open and Close Detect for Cellular Phones
Holster or Cover Detect for Cellular Phones and Tablet PCs
Cover or Display Switch in Portable PCs
Digital Still, Video Cameras and Handheld Gaming Consoles
Door, Lids and Tray Position Switches
Level, Proximity and Position Switches
Contact-Less Switches in 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.
Typical Applications Circuit
Note:
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical.
AH1893
Document number: DS35740 Rev. 1 - 2
1 of 10
www.diodes.com
July 2013
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1893 Datasheet

HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

No Preview Available !

AH1893 pdf
Pin Descriptions
Package: X1-DFN1216-4
Pin Number
1
2
3
4
Pin Name
OUTPUT
VDD
NC
GND
Output Pin
Power Supply Input
No Connection (Note 5)
Ground Pin
Function
Package: SOT553
Pin Number
1
2
3
4
5
Pin Name
VDD
NC
NC
GND
OUTPUT
Power Supply Input
No Connection (Note 5)
No Connection (Note 5)
Ground
Output
Function
Note:
5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.
Functional Block Diagram
AH1893
AH1893
Document number: DS35740 Rev. 1 - 2
2 of 10
www.diodes.com
July 2013
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1893 Datasheet

HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH

No Preview Available !

AH1893 pdf
AH1893
Absolute Maximum Ratings (Note 6) (@TA = +25°C, unless otherwise specified.)
Symbol
VDD
VDD_REV
IOUTPUT
B
PD
Ts
TJ
ESD HBM
Supply Voltage (Note 7)
Reverse Supply Voltage
Output current (source and sink)
Magnetic Flux Density
Parameter
Package Power Dissipation
Storage Temperature Range
Maximum Junction Temperature
Human Body Model (HMB) ESD capability
X1-DFN1216-4
SOT553
Rating
6
-0.3
3
Unlimited
230
230
-65 to +150
150
8
Unit
V
V
mA
mW
mW
°C
°C
kV
Notes:
6. 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.
7. The absolute maximum VDD of 6V 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
TA
Parameter
Supply Voltage
Operating Temperature Range
Operating
Operating
Conditions
Rating
1.6V to 3.6V
-40 to +85
Unit
V
C
Electrical Characteristics (@TA = +25°C, VDD = 1.85V, unless otherwise specified.)
Symbol
VOL
VOH
Ioff
Parameter
Output Low Voltage (on)
Output High Voltage (off)
Output Leakage Current
IDD(awake)
IDD(sleep)
Supply Current
IDD(avg)
Tawake
Tperiod
D.C.
Average Supply Current
Awake Time
Period
Duty Cycle
Conditions
IOUT = 1mA
IOUT = -1mA
VOUT = 3.6V, Output IOff
During ‘Awake’ Period,
TA = +25°C, VDD = 3V
During ‘Sleep’ Period,
TA = +25°C, VDD = 3V
TA = +25°C, VDD = 1.85V
TA = +25°C, VDD = 3.6V
(Note 8)
(Note 8)
Min
-
VDD-0.2
Typ
0.1
VDD-0.1
< 0.1
2.1
— 2.5
— 4.3
— 7.2
— 50
— 50
— 0.1
Note:
8. When power is initially turned on, the operating VDD (1.6V to 3.6V) must be applied to guaranteed the output sampling.
The output state is valid after the second operating cycle (typical 100ms).
Max
0.2
1
8
13
100
100
Unit
V
V
µA
mA
mA
µA
µA
µs
ms
%
AH1893
Document number: DS35740 Rev. 1 - 2
3 of 10
www.diodes.com
July 2013
© Diodes Incorporated




Part Number AH1893
Description HIGH SENSITIVITY MICROPOWER OMNIPOLAR HALL-EFFECT SWITCH
Maker Diodes
Total Page 10 Pages
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