AH1902

AH1902
HIGH SENSITIVITY MICROPOWER
OMNIPLOAR HALL-EFFECT SWITCH
NEW PRODUCT
Description
Pin Assignments
The AH1902 is a high-sensitivity micropower Omnipolar Hall effect
switch IC with internal pull up and pull down capability. Designed for
portable and battery powered consumer equipment such as cellular
phones and portable PCs to office equipment, home appliances and
industrial applications, the average supply current is only 4.3μA at
1.8V. To support potable equipment the AH1902 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
AH1902 is available in small low profile X1-DFN1216-4,
X2-DFN2015-6 and SOT553 packages.
( Top View )
( Top View )
OUTPUT
1
4
GND
2
3
VDD
NC
2
5
NC
NC
3
4
GND
NC
X2-DFN2015-6
NC
1
GND
2
NC
3
5
OUTPUT
4
VDD
SOT553
Applications












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 X1-DFN1216-4, X2-DFN2015-6 and SOT553
Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
6
( Top View )
Features


1
X1-DFN1216-4
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).





OUTPUT
VDD
Open and Close Detect for Flip/Slide Cellular Phones
Smart Cover or Dock Detect for Cellular Phones and Tablet PCs
Cover or Display Switch in Portable PCs (eg: Ultrabook)
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
1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
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
1.6V to 3.6V
VDD
CIN
AH1902
OUTPUT
GND
Note:
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical and should be placed as close to
the supply pin as possible.
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
Pin Descriptions
Package: X1-DFN1216-4
Pin Number
Pin Name
1
2
3
OUTPUT
GND
NC
Function
4
VDD
Power Supply Input
Pad
Pad
The center exposed pad – No connection internally.
The exposed pad can be left open (unconnected to ) on the PCB layout.
Output Pin
Ground Pin
No Connection (Note 5)
NEW PRODUCT
Package: X2-DFN2015-6
Pin Number
Pin Name
1
2
3
4
5
OUTPUT
NC
NC
GND
NC
Function
6
VDD
Power Supply Input
Pad
Pad
The center exposed pad – No connection internally.
The exposed pad can be left open (unconnected to) on the PCB layout.
Output Pin
No Connection (Note 5)
No Connection (Note 5)
Ground Pin
No Connection (Note 5)
Package: SOT553
Pin Number
Pin Name
1
2
3
NC
GND
NC
No Connection (Note 5)
Ground Pin
No Connection (Note 5)
4
VDD
Power Supply Input
5
OUTPUT
Note:
Function
Output Pin
5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.
Functional Block Diagram
VDD
Sleep/Awake Logic
and Power Switch
Offset
Cancellation
Hall
Plate
Amp
Latch
and
Output
Driver
Controller
OUTPUT
GND
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
Absolute Maximum Ratings (Note 6) (@TA = +25°C, unless otherwise specified.)
Symbol
Rating
Unit
V
VDD
Supply Voltage (Note 7)
6
VDD_REV
Reverse Supply Voltage
-0.3
V
IOUTPUT
Output Current (source and sink)
3
mA
B
Magnetic Flux Density
PD
Package Power Dissipation
Ts
Storage Temperature Range
TJ
Maximum Junction Temperature
ESD HBM
NEW PRODUCT
Parameter
Notes:
Unlimited
230
230
-65 to +150
X1-DFN1216-4 and X2-DFN2015-6
SOT553
Human Body Model (HMB) ESD capability
mW
mW
°C
+150
°C
8
kV
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
Rating
Unit
Supply Voltage
Operating
1.6V to 3.6V
V
Operating Temperature Range
Operating
-40 to +85
C
Electrical Characteristics
Symbol
(@TA = +25°C, VDD = 1.8V, unless otherwise specified.)
Parameter
Conditions
Min
Typ
Max
Unit
V
VOL
Output Low Voltage (on)
IOUT = 1mA
—
0.1
0.2
VOH
Output High Voltage (off)
IOUT = -1mA
VDD-0.2
VDD-0.1
—
V
Ioff
Output Leakage Current
VOUT = 3.6V, Output off
—
< 0.1
1
µA
During ‘awake’ period,
TA = +25°C, VDD = 3V
—
2.1
—
mA
During ‘sleep’ period,
TA = +25°C, VDD = 3V
—
2.5
—
µA
TA = +25°C, VDD = 1.8V
—
4.3
8
µA
TA = +25°C, VDD = 3.6V
—
7.2
13
µA
(Note 8)
(Note 8)
—
—
—
—
50
50
0.1
100
100
—
µs
ms
%
IDD(awake)
Supply Current
IDD(sleep)
IDD(avg)
Average Supply Current
Tawake
Tperiod
D.C.
Awake Time
Period
Duty Cycle
Note:
Conditions
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).
Tperiod
Tawake
IDD(awake)
Tsleep
Sample and output
latched
IDD(avg)
IDD(sleep)
0
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
Magnetic Characteristics (Note 9 &10) (TA = +25°C, VDD = 1.8V, unless otherwise specified)
Symbol
Characteristics
Bops (south pole to part marking side)
Min
Typ
(1mT=10 Gauss)
Max
Unit
—
23
33
47
VDD = 1.6V to 3.6V
TA = -40°C to +85°C
21
33
48
—
-47
-33
-24
-48
-33
-21
Bopn (north pole to part marking side)
VDD = 1.6V to 3.6V
TA = -40°C to +85°C
—
12
23
35
Brps (south pole to part marking side)
VDD = 1.6V to 3.6V
TA = -40°C to +85°C
9
23
38
—
-35
-23
-12
VDD = 1.6V to 3.6V
TA = -40°C to +85°C
-38
-23
-9
—
—
10
—
Release Point
Brpn (north pole to part marking side)
Bhy (|Bopx|-|Brpx|)
Notes:
Hysteresis
Gauss
9. Typical data is at TA = +25C, VDD = 1.8V.
10. Maximum and minimum parameters values over operating temperature range are not tested in production, they are guaranteed by design,
characterization and process control. The magnetic characteristics may vary with supply voltage, operating temperature and after soldering.
OUTPUT
(off-state) VDD
VOH
Turn
on
Bhy
Turn
off
(on-state)
VOL
Bopn Brpn
(off-state)
( Output Voltage )
NEW PRODUCT
Operation Point
Test Condition
Turn
off
0
VOH
Bhy
Turn
on
(on-state)
VOL = VSAT
Brps Bops
( Magnetic Flux Density B )
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
Bops
Brps
Bhy
Brpn
Bopn
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
0
25
50
75
100
Brpn
Bopn
-50
-25
0
25
50
75
Switch Points vs Temperature
0
25
50
75
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
100
Bops
Brps
Bhy
Brpn
Bopn
1.5
1.8
2.1
2.4
2.7
3
3.3
Temperature (°C)
Temperature (°C)
Switch Points vs Temperature
9
8
3.6V
7
6
5
1.8V
1.6V
4
3
2
1
0
0
25
50
75
100
10
9
8
7
6
5
4
3
2
1
0
3.9
3.6
3.9
TA = +25 C
1.5
1.8
2.1
2.4
2.7
3
3.3
Average Supply Current vs. Supply Voltage
Average Supply Current vs. Temperature
Document number: DS36533 Rev. 4 - 2
3.6
Supply Voltage (V)
Temperature ( C)
AH1902
100
TA = +25 C
Switch Points vs Temperature
10
-25
Bops
Brps
Bhy
Switch Points vs Temperature
Brpn
Bopn
-50
VDD = 1.8V
Temperature (°C)
Bops
Brps
Bhy
-25
60
50
40
30
20
10
0
-10
-20
-30
-40
-50
-60
Temperature (°C)
VDD = 3.6V
-50
Average Supply Current IDD (μA)
-25
Gauss (G)
Gauss (G)
-50
Gauss (G)
VDD = 1.6V
Average Supply Current I DD (μA)
NEW PRODUCT
Gauss (G)
Typical Operating Characteristics
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AH1902
Ordering Information
AH1902 - XXX - X
Packing
Package
7 : Tape & Reel
NEW PRODUCT
FA : X1-DFN1216-4
FT4 : X2-DFN2015-6
Z : SOT553
Part Number
Package
Code
Packaging
AH1902-FA-7
AH1902-FT4-7
AH1902-Z-7
FA
FT4
Z
X1-DFN1216-4
X2-DFN2015-6
SOT553
Quantity
7” Tape and Reel
Part Number Suffix
3,000/Tape & Reel
3,000/Tape & Reel
3,000/Tape & Reel
-7
-7
-7
Marking Information
(1)
Package Type: X1-DFN1216-4 and X2-DFN2015-6
( Top View )
Pin 1 indicator
XX : Identification Code
Y : Year : 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week; z represents
52 and 53 week
X : Internal code
X X
YWX
(2)
Part Number
Package
Identification Code
AH1902-FA-7
AH1902-FT4-7
X1-DFN1216-4
X2-DFN2015-6
F2
D2
Package Type: SOT553
( Top View )
XX Y W X
Part Number
AH1902-Z-7
AH1902
Document number: DS36533 Rev. 4 - 2
XX : Identification Code
Y : Year : 0 to 9
W : Week : A to Z : 1~26 week;
a to z : 27~52 week; z represents
52 and 53 week
X : Internal code
Package
SOT553
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Identification Code
D2
April 2016
© Diodes Incorporated
AH1902
Package Outline Dimensions (All dimensions in mm.)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(1)
Package Type: X1-DFN1216-4
A
A3
A1
Seating Plane
X1-DFN1216-4
Dim Min Max Typ
A
0.47 0.53 0.50
A1
0.00 0.05 0.02
A3
--0.13
b
0.15 0.25 0.20
D
1.15 1.25 1.20
D2
0.75 0.95 0.85
E
1.55 1.65 1.60
E2
0.55 0.75 0.65
e
0.65
L
0.20 0.30 0.25
Z
0.175
All Dimensions in mm
NEW PRODUCT
D
e
(Pin #1 ID)
C'0.2x45°
E
E2
L
D2
b
Z
Bottom View
Top View
Pin# 1
PART
MARKING
SURFACE
Hall Sensor
0.57/0.63
0.11/0.25
Min/Max
Die
0.77/0.83
Sensor Location
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
Package Outline Dimensions (continued) (All dimensions in mm.)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(2)
Package Type: X2-DFN2015-6
A1
A3
A
X2-DFN2015-6
Dim Min Max Typ
A 0.375 0.40 0.390
A1
0
0.05 0.02
A3
0.13
b
0.20 0.30 0.25
D
1.45 1.575 1.50
D2 1.00 1.20 1.10
e
0.50
E
1.95 2.075 2.00
E2 0.70 0.90 0.80
L
0.25 0.35 0.30
Z
0.125
Z1
0.075
All Dimensions in mm
Seating Plane
D
L
R0
.20
0
(Pin #1 ID)
E
E2
D2
z1
e
b
Bottom View
Min/Max
0.10/0.22
Top View
PART
MARKING
SURFACE
Pin# 1
Die
0.72/0.79
NEW PRODUCT
z
Hall Sensor
0.97/1.04
Sensor Location
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
Package Outline Dimensions (cont.) (All dimensions in mm.)
Please see http://www.diodes.com/package-outlines.html for the latest version.
(3)
Package Type: SOT553
D
e1
E1/2
e
E/2
E1
NEW PRODUCT
SOT553
Dim
Min
Max
Typ
A
0.55
0.62
0.60
b
0.15
0.30
0.20
c
0.10
0.18
0.15
D
1.50
1.70
1.60
E
1.55
1.70
1.60
E1
1.10
1.25
1.20
e
0.50 BSC
e1
1.00 BSC
F
0.00
0.10
––
L
0.10
0.30
0.20
a
6°
8°
7°
All Dimensions in mm
E
L (5x)
F
R0.1 MAX.
TYP.
b (5x)
c
a
7°
A
TYP.
Pin# 1
PART
MARKING
SURFACE
0.10/0.18
0.22/0.38
Min/Max
0.50/0.60
Die
Hall Sensor
0.75/0.85
Sensor Location
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
Suggested Pad Layout
Please see http://www.diodes.com/package-outlines.html for the latest version.
(1)
Package Type: X1-DFN1216-4
X1
C
NEW PRODUCT
X1-DFN1216-4
Y2
Dimensions
Value
C
0.65
X
0.25
X1
0.90
Y
0.50
Y1
0.70
Y2
2.00
All Dimensions in mm
Y1
Y
X
(2)
Package Type: X2-DFN2015-6
X2
C
X
X2-DFN2015-6
Dimensions
Value
C
0.500
X
0.350
X1
1.150
X2
1.350
Y
0.500
Y1
0.850
Y2
2.150
All Dimensions in mm
Y
Y1
Y2
X1
(3)
Package Type: SOT553
C2
Z
C2
SOT553
Dimensions
Value
Z
2.2
G
1.2
X
0.375
Y
0.5
C1
1.7
C2
0.5
All Dimensions in mm
C1
G
Y
X
AH1902
Document number: DS36533 Rev. 4 - 2
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AH1902
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
(AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
NEW PRODUCT
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes
without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the
application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or
trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume
all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated
website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and
hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or
indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings
noted herein may also be covered by one or more United States, international or foreign trademarks.
This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the
final and determinative format released by Diodes Incorporated.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express
written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labeling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the
failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and
acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any
use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related
information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its
representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2016, Diodes Incorporated
www.diodes.com
AH1902
Document number: DS36533 Rev. 4 - 2
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