AH1804 [DIODES]
MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH; 微功耗全极霍尔效应传感器开关
| 型号： | AH1804 |
| 厂家： | 
DIODES INCORPORATED |
| 描述： | MICROPOWER OMNIPOLAR HALL EFFECT SENSOR SWITCH |
| 文件： | 总9页 (文件大小：188K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Description
Pin Assignments
The AH1804 is a micropower Omnipolar Hall effect switch IC
with a single output driver with internal pull up and pull down
capability. Designed for portable and battery powered
equipment such as cellular phones and portable PCs the
average supply current is only 12µA at 3.3V. To support
battery powered equipment the AH1804 can operate over the
supply range of 2.5V to 3.6V and uses a hibernating clocking
system to minimize the power consumption.
( Top View )
GND
NC
4
3
The output is activated with either a north or south pole of
sufficient strength. When the magnetic flux density (B) is
larger than operate point (Bop), the output will be turned on
(pulled low) and held until B is lower than release point (Brp).
1
2
VDD
Output
DFN1216-4
Features
Applications
•
•
•
•
•
Omnipolar operation (North or South pole)
Low supply voltage 2.5V to 3.6V
Micropower operation
No external pull up resistors required
Chopper stabilized design
•
•
•
Cover switch in clam-shell and slide cellular phones
Cover switch in portable PC’s, Tablets and PDA
Display screen open/close detect in Digital
camcorders
Contact-less switch in portable battery powered
consumer products
•
o
o
o
Superior temperature stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
•
•
•
•
Good RF noise immunity
-40°C to 85°C operating temperature
Small low profile DFN1216-4 package
ESD (HBM) ＞ 5KV
•
“Green” Molding Compound
Typical Application Circuit
VDD
2.5V to 3.6V
Cin
Output
AH1804
GND
Note: Cin is for power stabilization and to strengthen the noise immunity, C = 100nF or higher must be used.
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Pin Descriptions
Pin Name
VDD
P/I/O
Description
P/I
P/I
O
Power Supply Input
Ground
GND
Output
NC
Output Pin
NC
No Connection (Note 1)
Notes:
1. NC is “No Connection” which is not connected internally. This pin can be left open or tied to ground.
Functional Block Diagram
VDD
Sleep/Awake Logic
and Power Switch
Hall
Plate
Latch
Amp
Amp
Output
Driver
Controller
Output
GND
Hall
Plate
Latch
Absolute Maximum Ratings (TA = 25°C, Note 2)
Symbol
VDD
VDD rev
B
Characteristics
Supply voltage (Note 3)
Values
5.0
Unit
V
Reverse supply voltage
-0.3
V
Magnetic flux density
Unlimited
Ts
Storage Temperature Range
Package Power Dissipation
Maximum Junction Temperature
-65 to +150
230
°C
mW
°C
PD
DFN1216-4
TJ
150
Notes:
2. Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating condition
for extended periods may affect device reliability.
3. The absolute maximum of 5V is a transient stress rating and is not meant as functional operating conditions. It is not recommended to operate the
device at the absolute maximum rated conditions for any period of time.
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Recommended Operating Conditions (TA = 25°C)
Symbol
VDD
Characteristics
Supply Voltage
Operating Temperature Range
Conditions
CIN =0.1µF (Note 4)
Operating
Rating
2.5 to 3.6
-40 to +85
Unit
V
TA
°C
Notes: 4. Decoupling capacitor C = 100nF or higher must be used for full 2.5V to 3.6V supply range.
IN
Electrical Characteristics (TA = 25°C, VDD = 3.3V, unless otherwise specified)
Symbol
VOL
Characteristics
Output Low Voltage (on)
Output High Voltage (off)
Conditions
Min
Typ.
Max
0.2
⎯⎯
⎯
Unit
V
IOUT = 1mA
IOUT = -1mA
Chip enable
Chip disable
⎯
0.1
VOH
VDD-0.2 VDD-0.1
V
Idd(en)
⎯
⎯
⎯
4
8
mA
µA
µA
µs
ms
%
Idd(dis) Supply current
Idd(avg)
⎯
Average supply current,
(Note 5)
12
50
50
0.1
⎯
Tawake
Tperiod
D.C.
Awake Time
Period
⎯
100
100
⎯
(Note 5)
⎯
⎯
Duty Cycle
Notes: 5. When power is initially on, the operating V
(2.5V to 3.6V) must be applied to be guaranteed for the output sampling.
DD
The output state is valid after the second operating phase (typical 100ms).
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Magnetic Characteristics (TA = 25°C, VDD = 3.3V, Note 6)
(1mT=10 Gauss)
Symbol
Characteristics
Operation Point
Min
20
-60
15
-
Typ.
40
Max
60
-20
-
Unit
Bops(south pole to brand side)
Bopn(north pole to brand side)
Brps(south pole to brand side)
Brpn(north pole to brand side)
Bhy (|Bopx|-|Brpx|)
-40
32
Gauss
Release Point
Hysteresis
-32
8
-15
-
Notes: 6. The magnetic characteristics may vary with operating temperature and after soldering.
Output
Output
( off-state )
Bhy
( off-state )
Bhy
Vcc
Vcc
Turn on
Turn off
Vsat
Turn off
Vsat
Turn on
( on-state )
Bopn
( on-state )
Brpn
0
0
Brps
Bops
( Magnetic flux density B )
( Magnetic flux density B )
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Typical Characteristics
Typical Switch Point Bop and Brp vs. Temperature
Typical Switch Points Bop and Brp vs. Supply Voltage
Average Supply Current vs. Temperature
Average Supply Current vs. Supply Voltage
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Ordering Information
AH1804 - FA - 7 X
Magentic
Characteristics
Packing
Package
FA : DFN1216-4
7 : Tape & Reel
- Blank : Option 1
(Note 7)
7” Tape and Reel
Magentic
Characteristics
(Note 7)
Device
(Note 8)
Package
Code
Packaging
(Note 9)
Quantity
Part Number Suffix
AH1804-FA-7
FA
DFN1216-4
3000/Tape & Reel
-7
-Blank
Notes:
7. Please refer the Magnetic Characteristics table.
8. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
9. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf
Marking Information
(1) DFN1216-4
( Top View )
XX : Identification Code
Y : Year : 0~9
Pin 1 indicator
X X
YWX
W : Week : A~Z : 1~26 week;
a~z : 27~52 week; z represents
52 and 53 week
X : A~Z : Internal code
Part Number
AH1804-FA-7
Package
Identification Code
DFN1216-4
KJ
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Package Outline Dimensions (All Dimensions in mm)
(1) Package type: DFN1216-4
Top Mark
0.10
C
Seating Plane
Side View
0.08
C
4x
C
0.65Typ.
1.15/1.25
0.65Typ.
A
B
C
L
Pin#1
C0.2
C
L
Hall sensor
0.25(4x)
1.0
0.75/0.95
Top View
2X-
Land Pattern Recommendation
(Unit:mm)
0.25 B
0.175(4x)
0.15/0.25
(4x)
0.10
C
A B
Bottom View
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
Taping Orientation (Note 10)
DFN1216-4
Notes: 10. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf.
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
AH1804
MICROPOWER OMNIPOLAR
HALL EFFECT SENSOR SWITCH
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).
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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
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herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies
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Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
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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
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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 © 2011, Diodes Incorporated
www.diodes.com
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© Diodes Incorporated
AH1804
Document number: DS35314 Rev. 1 - 2
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