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Diodes Semiconductor Electronic Components Datasheet

AH1802 Datasheet

ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH

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AH1802 pdf
AH1802
MICROPOWER, ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH
Description
Pin Assignments
The AH1802 is a high sensitivity, micropower omnipolar Hall Effect
switch IC designed for portable and battery powered equipment such as
cellular phones, PDA’s and portable PC’s. Based on two sensitive Hall
Effect plates and a chopper stabilized architecture the AH1802 provides
a reliable solution over the whole operating range. To support portable
and battery powered equipment the design has been optimized to
operate over the supply range of 2.5V to 5.5V and consumes only 24µW
with a supply of 3V.
(Top View)
The single open drain output can switched on with either a north or
south pole of sufficient strength. When the magnetic flux density (B)
perpendicular the part marking surface is larger than operate point (Bop)
the output is switched on (pulled low). The output is turned off when
B becomes lower than the release point (Brp). The output will remain off
when there is no magnetic field.
SC59
(Top View)
(Top View)
U-DFN2020-6
(Top View)
Features
Omnipolar (North or South pole) Operation
2.5V to 5.5V operating range
High Sensitivity
Single Open Drain Output
Micropower Operation
Chopper Stabilized Design Provides
ƒ Superior Temperature Stability
ƒ Minimal Switch point Drift
ƒ Enhanced Immunity to Stress
Good RF Noise Immunity
-40°C to +85°C Operating Temperature
ESD5kV for U-DFN2020-6, U-DFN2020-3 and X2- DFN2015-3
ESD6kV for SC59
Low Profile SC59, U-DFN2020-6, U-DFN2020-3 and
X2-DFN2015-3 packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
U-DFN2020-3
X2-DFN2015-3
Applications
Open and Close Detect for flip/slide Cellular Phones
Smart Cover or Dock Detect for Cellular Phones and Tablets
Cover or Display Switch in Portable PCs (eg Ultrabook)
Display switch for portable PCs
On/Off switch for PDAs and digital cameras
Contact-less switch in consumer products
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.
AH1802
Document number: DS31170 Rev. 9 - 2
1 of 12
www.diodes.com
November 2013
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1802 Datasheet

ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH

No Preview Available !

AH1802 pdf
Typical Applications Circuit
2.5~5.5V
C
AH1802
GND
RL
Output
Pin Descriptions
Package: SC59
Pin Number
1
2
3
Pin Name
VDD
OUTPUT
GND
Power Supply Input
Output Pin
Ground Pin
Function
Package: U-DFN2020-3 and X2-DFN2015-3
Pin Number Pin Name
1 VDD Power Supply Input
2 OUTPUT Output Pin
3 GND Ground Pin
Function
Package: U-DFN2020-6 and X2-DFN2015-3
Pin Number Pin Name
1 NC No Connection (Note 4)
2 GND Ground Pin
3 NC No Connection (Note 4)
4 VDD Power Supply Input
5 NC No Connection (Note 4)
6 OUTPUT Output Pin
Function
Note:
4. NC is “No Connection”- recommendation is to connect the NC pin to ground externally.
Functional Block Diagram
AH1802
AH1802
Document number: DS31170 Rev. 9 - 2
2 of 12
www.diodes.com
November 2013
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AH1802 Datasheet

ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH

No Preview Available !

AH1802 pdf
AH1802
Absolute Maximum Ratings (Note 6) (@TA = +25°C, unless otherwise specified.)
Symbol
VDD
B
Ts
PD
TJ
Parameter
Supply Voltage (Note 7)
Magnetic Flux Density
Storage Temperature Range
Package Power Dissipation
Maximum Junction Temperature
Values
7
Unlimited
-65 to +150
230
150
Unit
V
°C
mW
°C
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 7V 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
Conditions
Operating
Operating
Rating
2.5 to 5.5
-40 to +85
Unit
V
°C
Electrical Characteristics (@ VDD = 3V, TA = +25°C, unless otherwise specified.)
Symbol
VOUT
IOFF
Characteristic
Output On Voltage (VOL)
Output Leakage Current
IDD(awake)
IDD(sleep) Supply Current
IDD(avg)
FC
Tawake
Tperiod
D.C.
Chopping Frequency
Awake Time
Period
Duty Cycle
Conditions
IOUT = 1mA
VOUT = 5.5V, B < Brp
During ‘awake’ period,
TA = +25°C, VDD = 3V
During ‘awake’ period,
TA= -40 to +85°C, VDD = 2.5 to 5.5V
During ‘sleep’ period,
TA= +25°C, VDD = 3V
During ‘sleep’ period,
TA= -40 to +85°C, Vdd = 2.5~5.5V
Average supply current ,
TA= +25°C, VDD = 3V
Average supply current ,
TA= -40 to +85°C, Vdd = 2.5 to 5.5V
For design information only
(Note 8)
(Note 8)
Min
Typ Max
0.1 0.3
<0.1 1
36
3 10
5 10
5 18
8 16
8 23
300 —
75 150
75 150
0.1 —
Note:
8. When power is initially turned on, VDD must be within its correct operating range (2.5V to 5.5V) to guaranteed the output sampling.
The output state is valid after the second operating cycle (typical 150ms).
Unit
V
µA
mA
mA
µA
µA
µA
µA
kHz
µs
ms
%
AH1802
Document number: DS31170 Rev. 9 - 2
3 of 12
www.diodes.com
November 2013
© Diodes Incorporated




Part Number AH1802
Description ULTRA-SENSITIVE OMNIPOLAR HALL-EFFECT SENSOR SWITCH
Maker Diodes
Total Page 12 Pages
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