AH1889

AH1889
HIGH SENSIVITY DUAL UNIPOLAR HALL-EFFECT SWITCH
Description
Pin Assignments
AH1889 is a high sensitivity dual output Unipolar Hall effect IC which
can detect either a North or South pole independently and switch one
of its two outputs with internal pull up and pull down capability. The
(Top View)
AH1889 is mainly designed for low voltage applications which require
a quick response time and can operate over the supply voltage of
1.65V to 3.6V. To minimize PCB space AH1889 outputs have internal
pull up and pull down capability and is packaged in a small low profile
SOT553 package.
NEW PRODUCT
A South pole of sufficient strength will turn OUTPUT1 on and a North
pole of sufficient strength with turn on OUTPUT2. While the magnetic
flux density (B) perpendicular to the package is larger than operate
point Bops or Bopn, the appropriate output will be turned on (pulled
SOT553
low), the output is held until B is lower than release point Brps or
Brps, then turned off (high). The outputs will be turned off and will
remain off when there is no magnetic field.
Features
Applications


Two Monolithic Unipolar Hall Effect Sensor Switch

Operation with a South Pole (OUTPUT1)

Operation with a North Pole (OUTPUT2)
Position and proximity detection for consumer, office equipments
and industrial applications

Open and close detect switches for home appliances

Supply Voltage of 1.65V to 3.6V

Door, lids, tray position detect switches

Quick Response Time Without Sleep Mode

Magnetic field direction detection

Chopper Stabilized Design Provides:

Contact-less switches for consumer and industrial applications

Superior Temperature Stability

Extremely low Switch-Point Drift

Enhanced immunity to physical stress

Good RF Noise Immunity

-40°C to +85°C Operating Temperature

ESD (Human Body Model) >4kV

Small and Low Profile SOT553 package

Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

Halogen and Antimony Free. “Green” Device (Note 3)
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 100nF typical.
AH1889
Document number: DS36256 Rev. 1 - 2
1 of 7
www.diodes.com
April 2013
© Diodes Incorporated
AH1889
Pin Descriptions
Package: SOT553
Pin
Number
Pin
Name
1
2
3
OUTPUT2
GND
NC
4
VDD
5
OUTPUT1
NEW PRODUCT
Note:
Function
North Pole Setecting Output Pin (active low)
Ground
No Connection (Note 5)
Power Supply Voltage
South Pole Detecting Output Pin (active low)
5. NC is “No Connection” pin and is not connected internally. This pin can be left open or tied to ground.
Functional Block Diagram
Offset
Cancelling
Offset
Cancelling
Absolute Maximum Ratings (Note 6) (@TA = +25°C, unless otherwise specified.)
Symbol
Values
Unit
VDD
Supply Voltage (Note 7)
5
V
VDD_REV
Reverse Supply Voltage
-0.3
V
IOUTPUT
Output current (source and sink)
1
mA
B
Magnetic Flux Density
PD
Package Power Dissipation
Ts
Storage Temperature Range
TJ
Maximum Junction Temperature
ESD
Notes:
Characteristics
Unlimited
SOT553
Human Body Model ESD capability
230
mW
-65 to +150
C
150
C
4
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.
AH1889
Document number: DS36256 Rev. 1 - 2
2 of 7
www.diodes.com
April 2013
© Diodes Incorporated
AH1889
Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.)
Symbol
VDD
TA
Characteristic
Rating
Unit
Operating
1.65 to 3.6
V
Operating Temperature Range
Operating
-40 to +85
°C
Electrical Characteristics
(Note 8) (@TA = +25°C, VDD = 1.8V, unless otherwise specified.)
Symbol
Characteristic
Min
Typ
Max
Unit
VOH
OUTPUT1 and OUTPUT2 High Voltage (off)
IOUT = -0.5mA
VDD -0.2
—
—
V
VOL
OUTPUT1 and OUTPUT2 Low Voltage (on)
IOUT = 0.5mA
—
0.1
0.2
V
VDD = 1.8V Outputs Off
—
2.1
—
mA
VDD = 3.6V Outputs Off
—
5
—
mA
Supply Current
IDD
Note:
Conditions
8. When power is initially turned on, the operating VDD (1.65V to 3.6V) must be applied to guaranteed the output.
Magnetic Characteristics (Note 9, 10, 11) (@TA = +25°C, VDD = 1.8V, unless otherwise specified.)
(1mT=10 Gauss)
Output
OUTPUT1
Symbol
Bops (South pole to part marking side)
Brps (South pole to part marking side)
Bopn (North pole to part marking side)
OUTPUT2
Brpn (North pole to part marking side)
Bhy (|Bopx|-|Brpx|)
Characteristic
Operation Point
Min
—
Typ
35
Max
50
Release point
Operation Point
Release point
Hysteresis
6
-50
—
—
20
-35
-20
8
—
—
-6
—
Unit
Gauss
9. Typical data is at TA = +25°C, VDD = 3V, and for design information only.
10. Bops and Brps for OUTPUT1 pin responds to South pole only; Bopn and Brpn for OUTPUT2 pin responds to North pole only.
11. Magnetic characteristics may vary with operating temperature and after soldering.
AH1889
Document number: DS36256 Rev. 1 - 2
( Output Voltage )
Notes:
( Output Voltage )
NEW PRODUCT
Conditions
Supply Voltage
3 of 7
www.diodes.com
April 2013
© Diodes Incorporated
AH1889
Typical Operating Characteristics
50
40
VDD = 3.0V
30
Bops
30
Bops
20
Brps
Bhy
20
Bhy
Brps
10
0
-10
-20
Gauss (G)
Gauss (G)
NEW PRODUCT
50
VDD = 1.8V
40
-10
Brpn
-30
Bopn
-40
0
-20
Brpn
-30
10
Bopn
-40
-50
-50
-50
-25
0
25
50
75
100
-50
-25
0
Temperature (°C)
50
10
Bops
30
Bops
Bhy
Brps
20
Bhy
Brps
0
-10
Brpn
-20
-30
Gauss (G)
20
Gauss (G)
100
TA = +25 °C
40
30
10
0
-10
Brpn
-20
-30
Bopn
-40
Bopn
-40
-50
-50
-25
0
25
50
75
-50
100
1.5
1.8
2.1
2.4
2.7
3
3.3
Temperature (°C)
Supply Voltage (V)
Switch Points vs Temperature
Switch Points vs Supply Voltage
10
10
9
9
8
8
7
6
5
3.6V
4
3
1.8V
1.65V
2
1
Supply Current IDD (mA)
Supply Current IDD (mA)
75
Switch Points vs Temperature
VDD = 3.3V
40
50
Temperature (°C)
Switch Points vs Temperature
50
25
3.6
3.9
TA = +25 °C
7
6
5
4
3
2
1
0
0
-50
-25
0
25
50
75
100
1.5
2.4
2.7
3
3.3
3.6
3.9
Supply Current vs. Supply Voltage
Supply Current vs. Temperature
Document number: DS36256 Rev. 1 - 2
2.1
Supply Voltage (V)
Temperature (°C)
AH1889
1.8
4 of 7
www.diodes.com
April 2013
© Diodes Incorporated
AH1889
Thermal Performance Characteristics
TA (C)
25
50
60
70
80
85
90
100
110
120
130
140
150
PD (mW)
230
184
166
147
129
120
110
92
74
55
37
18
0
75 85
100
NEW PRODUCT
Power Dissipation, PD (mW)
300
SS
200
100
0
0
-40
25
50
125
150
Ambient Temperature TA (°C)
Power Dissipation Curve
Ordering Information
Part Number
Package Code
Packaging
AH1889-Z-7
Z
SOT553
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
Marking Information
(1)
Package Type: SOT553
Part Number
AH1889
AH1889
Document number: DS36256 Rev. 1 - 2
Package
SOT553
5 of 7
www.diodes.com
Identification Code
KX
April 2013
© Diodes Incorporated
AH1889
Package Outline Dimensions (All dimensions in mm.)
Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version.
(1)
Package Type: SOT553
D
e1
e
E1/2
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/2
E
L (5x)
c
b (5x)
F
R0.1 MAX.
TYP.
a
7°
A
0.10/0.18
0.55/0.70
0.23/0.37
TYP.
Sensor Location
Suggested Pad Layout
Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version.
(1)
Package Type: SOT553
C2
Z
C2
C1
G
Y
Dimensions Value (in mm)
Z
2.2
G
1.2
X
0.375
Y
0.5
1.7
C1
0.5
C2
X
AH1889
Document number: DS36256 Rev. 1 - 2
6 of 7
www.diodes.com
April 2013
© Diodes Incorporated
AH1889
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 © 2013, Diodes Incorporated
www.diodes.com
AH1889
Document number: DS36256 Rev. 1 - 2
7 of 7
www.diodes.com
April 2013
© Diodes Incorporated
Similar pages