Diodes AH1893 High sensitivity micropower omnipolar hall-effect switch Datasheet

AH1893
HIGH SENSITIVITY MICROPOWER
OMNIPOLAR HALL-EFFECT SWITCH
Description
Pin Assignments
The AH1893 is a high sensitivity micropower Omnipolar Hall effect
(Top View)
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
X1-DFN1216-4
3.6V and uses a hibernating clocking system to minimize the power
NEW PRODUCT
consumption. To minimize PCB space the AH1893 is available in
small low profile X1-DFN1216-4 and SOT553 packages.
(Top View)
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).
SOT553
Features
Applications

Omnipolar Operation (North or South pole)

Supply Voltage of 1.6V to 3.6V

Open and Close Detect for Cellular Phones
High Sensitivity

Holster or Cover Detect for Cellular Phones and Tablet PCs
Micropower Operation

Cover or Display Switch in Portable PCs
Chopper Stabilized Design Provides

Digital Still, Video Cameras and Handheld Gaming Consoles

Superior Temperature Stability

Door, Lids and Tray Position Switches
Minimal Switch Point Drift

Level, Proximity and Position Switches
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)
Notes:
Contact-Less Switches in Home Appliances and Industrial
Applications
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
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AH1893
Pin Descriptions
Package: X1-DFN1216-4
Pin Number
1
Pin Name
OUTPUT
Function
2
VDD
Power Supply Input
3
4
NC
GND
No Connection (Note 5)
Ground Pin
Output Pin
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Package: SOT553
Pin Number
Pin Name
1
VDD
Power Supply Input
2
NC
No Connection (Note 5)
3
4
5
NC
GND
OUTPUT
No Connection (Note 5)
Ground
Output
Note:
Function
5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.
Functional Block Diagram
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Absolute Maximum Ratings (Note 6) (@TA = +25°C, unless otherwise specified.)
Symbol
Rating
Unit
VDD
Supply Voltage (Note 7)
6
V
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
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Parameter
Notes:
Unlimited
230
230
-65 to +150
X1-DFN1216-4
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
Rating
Unit
Supply Voltage
Parameter
Operating
Conditions
1.6V to 3.6V
V
Operating Temperature Range
Operating
-40 to +85
C
Electrical Characteristics (@TA = +25°C, VDD = 1.85V, unless otherwise specified.)
Symbol
VOL
VOH
Parameter
Output Low Voltage (on)
Output High Voltage (off)
Ioff
Output Leakage Current
IDD(awake)
Supply Current
IDD(sleep)
IDD(avg)
Average Supply Current
Tawake
Tperiod
D.C.
Awake Time
Period
Duty Cycle
Note:
Conditions
IOUT = 1mA
IOUT = -1mA
Min
VDD-0.2
Typ
0.1
VDD-0.1
Max
0.2
—
Unit
V
V
VOUT = 3.6V, Output IOff
—
< 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
—
mA
TA = +25°C, VDD = 1.85V
—
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
%
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).
AH1893
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AH1893
Magnetic Characteristics (Note 9 &10) (TA = +25°C, VDD = 1.85V, unless otherwise specified)
Symbol
Characteristics
Bops (south pole to part marking side)
Operation Point
Bopn (north pole to part marking side)
Brps (south pole to part marking side)
NEW PRODUCT
Release Point
Brpn (north pole to part marking side)
Bhy (|Bopx|-|Brpx|)
Notes:
Hysteresis (Note 11)
Test Condition
Min
Typ
(1mT=10 Gauss)
Max
Unit
TA = +25C
16
30
TA = -40°C to +85C
14
30
42
46
TA = +25C
-42
-30
-16
TA = -40°C to +85C
-46
-30
-14
TA = +25C
10
20
35
TA = -40°C to +85C
9
20
39
-10
TA = +25C
-35
-20
TA = -40°C to +85C
-39
-20
-9
TA = +25C
5
10
15
TA = -40°C to +85C
-
10
-
Gauss
9. Typical data is at TA = +25C, VDD = 1.85V.
10. Maximum and minimum parameters values over the 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.
11. Maximum and minimum hysteresis is guaranteed by design and characterization.
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AH1893
Typical Operating Characteristics
60
60
VDD = 1.6V
VDD = 1.85V
NEW PRODUCT
40
Bops
Brps
20
Bhy
0
Brpn
Bopn
-20
Gauss (G)
Gauss (G)
40
-40
0
Brpn
Bopn
-20
-40
-60
-50
-25
0
25
50
75
-60
100
-50
-25
0
50
75
Temperature (°C)
Switch Points vs Temperature
Switch Points vs Temperature
60
VDD = 3.6V
40
100
TA = +25 °C
Bops
Brps
Bhy
20
0
Brpn
Bopn
-20
Gauss (G)
40
-40
Bops
Brps
Bhy
20
0
Brpn
Bopn
-20
-40
-60
-60
-50
-25
0
25
50
75
100
1.5
1.8
2.1
Temperature (°C)
8
7
3.6V
6
5
1.85V
1.6V
4
3
2
1
0
0
25
50
75
Average Supply Current IDD (μA)
9
-25
10
9
3.3
3.6
3.9
3.6
3.9
TA = +25 °C
7
6
5
4
3
2
1
0
100
1.5
1.8
2.1
2.4
2.7
3
3.3
Supply Voltage (V)
Average Supply Current vs. Supply Voltage
Average Supply Current vs. Temperature
Document number: DS35740 Rev. 1 - 2
3
8
Temperature (°C)
AH1893
2.7
Switch Points vs Supply Voltage
10
-50
2.4
Supply Voltage (V)
Switch Points vs Temperature
Average Supply Current IDD (μA)
25
Temperature (°C)
60
Gauss (G)
Bops
Brps
Bhy
20
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AH1893
NEW PRODUCT
Ordering Information
Part Number
Package
Code
Packaging
AH1893-FA-7
AH1893-Z-7
FA
Z
X1-DFN1216-4
SOT553
Quantity
7” Tape and Reel
Part Number Suffix
3000/Tape & Reel
3000/Tape & Reel
-7
-7
Marking Information
(1)
(2)
Package Type: X1-DFN1216-4
Part Number
Package
Identification Code
AH1893-FA-7
X1-DFN1216-4
B3
Part Number
AH1893-Z-7
Package
SOT553
Identification Code
B3
Package Type: SOT553
AH1893
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AH1893
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
(1)
Package Type: X1-DFN1216-4
A
3
A
1
A
e
n
a
l
P
g
n
i
t
a
e
S
︶
°
5
4
x
2
.
0
'
C
︵
D
I
1
#
n
i
P
E
2
E
NEW PRODUCT
De
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
L
2
D
b
Z
0.57/0.63
0.11/0.25
Bottom View
Sensor Location
AH1893
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AH1893
Package Outline Dimensions (cont.) (All dimensions in mm.)
(2)
Package Type: SOT553
D
e1
e
E/2
E1
E
L (5x)
F
R0.1 MAX.
TYP.
b (5x)
c
a
A
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
7°
NEW PRODUCT
E1/2
TYP.
Sensor Location
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AH1893
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
(1)
Package Type: X1-DFN1216-4
1
X C
Dimensions
Value
C
0.65
X
0.25
X1
0.90
Y
0.50
Y1
0.70
Y2
2.00
All Dimensions in mm
1
Y
2
Y
NEW PRODUCT
X1-DFN1216-4
Y
X
(2)
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
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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).
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written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
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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.
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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
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representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2013, Diodes Incorporated
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