Diodes AH1822 Micropower omnipolar hall-effect sensor Datasheet

AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
General Description
Features
•
•
•
•
•
•
•
•
•
AH1822 is comprised of two Hall effect plates and an open-drain
output driver, mainly designed for battery-operation, hand-held
equipment (such as Cellular and Cordless Phone, PDA). The
total power consumption in normal operation is typically 24μW
with a 3V power source.
Micropower operation
Operation with magnetic field of either north or south
pole (omnipolar)
2.5V to 5.5V battery operation
Chopper stabilized
• Superior temperature stability
• Extremely Low Switch-Point Drift
• Insensitive to Physical Stress
Good RF noise immunity
-40°C to 85°C operating temperature
ESD (HBM) > 5KV
DFN2015-6 and DFN3020-6: Available in “Green”
Molding Compound (No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
Either north or south pole of sufficient strength will turn the output
on. The output will be turned off under no magnetic field. While
the magnetic flux density (B) is larger than operating point (Bop),
the output will be turned on (low), the output is held until B is
lower than release point (Brp), then turned off.
Applications
•
•
•
Cover switch in clam-shell cellular phones
Cover switch in Notebook PC/PDA
Contact-less switch in consumer products
Ordering Information
AH 1822 - XXX G - 7
Package
FT4 : DFN2015-6
FU4 : DFN3020-6
Device
AH1822-FT4G-7
AH1822-FU4G-7
Notes:
Package
Code
FT4
FU4
Green
G : Green
Packaging
(Note 2)
DFN2015H4-6
DFN3020H4-6
Packing
7 : Tape & Reel
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
3000/Tape & Reel
-7
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.
2. 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.
AH1822 Rev. 5
1 of 9
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Pin Assignments
( Top View )
( Top View )
NC
Vdd
1
6
NC
2
5
Output
GND
3
4
GND
Output
1
6
Vdd
NC
2
5
NC
GND
3
4
GND
DFN2015-6
Notes:
3.
DFN3020-6
NC is “No Connection” which is recommended to be tied to ground.
Pin Descriptions
Pin Name
Vdd
GND
Output
NC
P/I/O
P/I
P/I
O
NC
Description
Power Supply Input
Ground
Output Pin
No Connected
Block Diagram
Vdd
Power
switch
Offset
Cancelling
Hall Plate
Amp
Latch
Output
Logical
GND
AH1822 Rev. 5
Offset
Cancelling
Hall Plate
Amp
2 of 9
www.diodes.com
Latch
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Typical Circuit
2.5~5.5V
RL
C
Output
AH1822
GND
Notes:
4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF~100nF.
RL is the pull-up resistor, the recommended resistance is 10KΩ~100KΩ.
Absolute Maximum Ratings
Symbol
Vdd
B
TST
PD
TJ
(at TA= 25°C)
Characteristics
Supply voltage
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
Recommended Operating Conditions
Symbol
Vdd
TA
AH1822 Rev. 5
Parameter
Supply Voltage
Operating Temperature Range
Conditions
Rating
Unit
Operating
Operating
2.5~5.5
-40 to +85
V
°C
3 of 9
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Electrical Characteristics
Symbol
Characteristic
Vout
Output On Voltage
Ioff
Output Leakage Current
Idd(en)
Idd(en)
Idd(dis)
Idd(dis) Supply Current
Idd(avg)
Idd(avg)
FC
Tawake
Tperiod
D.C.
Notes:
(TA = +25°C, Vdd = 3V; unless otherwise specified)
Chopping Frequency
Awake Time
Period
Duty Cycle
Conditions
Iout=1mA
Vout=5.5V, Output off
Chip enable , TA= 25°C , Vdd = 3V
Chip enable , TA= -40~85°C ,
Vdd = 2.5~5.5V
Chip disable , TA= 25°C , Vdd = 3V
Chip disable , TA= -40~85°C ,
Vdd = 2.5~5.5V
Average supply current ,
TA= 25°C , Vdd = 3V
Average supply current ,
TA= -40~85°C , Vdd = 2.5~5.5V
For design information only
(Note 5)
(Note 5)
Min
Typ.
Max
Unit
⎯
⎯
⎯
0.1
<0.1
3
0.3
1
6
V
µA
mA
⎯
3
10
mA
⎯
5
10
µA
⎯
5
18
µA
⎯
8
16
µA
⎯
8
28
µA
⎯
⎯
⎯
⎯
300
75
75
0.1
⎯
150
150
⎯
KHz
µs
ms
%
5. When power is initially on, the operating Vdd (2.5V to 5.5V) must be applied to be guaranteed for the output sampling. The output state is valid
after the second operating phase (typical 150ms).
Tperiod
Tawake
Idd(en)
Sample and output
latched
Idd (dis)
0
AH1822 Rev. 5
4 of 9
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Magnetic Characteristics
Symbol
Characteristic
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 )
Notes:
(TA=25°C, Vdd=3V, Note 6, 7)
Operate Point
Release Point
(1mT=10 Gauss)
Max
Unit
Min
Typ.
-55
10
-
28
-28
20
-20
55
-10
5
8
-
Hysteresis
Gauss
6. Typical data is at Ta = 25°C, Vdd = 3V, and for design information only.
7. Operating point and release point will vary with supply voltage and operating temperature.
Output
( Output Voltage )
( Output Voltage )
Output
Vcc ( off-state )
Turn off
Bhy
Turn on
( on-state )
( off-state )
Turn off
Bhy
Turn on
( on-state )
Vsat
Vsat
Vcc
Bopn Brpn 0
( Magnetic flux density B )
0 Brps Bops
( Magnetic flux density B )
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
P D (m W )
P o w e r D is s ip a tio n C u rv e
300
200
100
0
0
25
50
75
85
100
125
150
T A (。 C )
AH1822 Rev. 5
5 of 9
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Marking Information
(1) 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 : A~Z : Green
XX
YWX
Part Number
AH1822
Package
DFN2015-6
Identification Code
K7
(2) DFN3020-6
( Top View )
XX
YW X
Part Number
AH1822
AH1822 Rev. 5
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 : A~Z : Green
Package
DFN3020-6
6 of 9
www.diodes.com
Identification Code
K8
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Package Information
(All Dimensions in mm)
2xaaa A
(1) Package type: DFN2015-6
1.45/1.575
A
1.95/2.075
B
aaa B
0.13Typ.
Seating Plane
4x-0.50
4x-0.50
C
(Pin #1)
(Pin #1)
6x-0.75
1.0/1.2
0.20/0.30
2.0
0.7/0.9
0.08 C
0.40Max.
6x-
(Pin #1)
0/0.05
ccc C
0.25/0.35
2x-
C A B
bbb
6x-0..30
Bottom View
Land Pattern Recommendation
(Unit:mm)
2X-
aaa A
(2) Package type: DFN3020-6
1.95/2.075
A
aaa B
6x-
0.08 C
0/0.05
(Pin #1)
Seating Plane
0.40Typ.
ccc C
0.50Typ.
C A B
3.0
0.50/0.60
1.124/1.324
(Pin #1 ID)
bbb
0.942/1.142
0.20/0.30
Bottom View
AH1822 Rev. 5
6x-0.30
C
4x-0.75
2X-
0.15Typ.
2.95/3.075
B
(Pin #1)
4x-0.50
Land Pattern Recommendation
(Unit: mm)
7 of 9
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
Taping Orientation
(1) DFN2015-6
(2) DFN3020-6
Notes:
8. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf.
AH1822 Rev. 5
8 of 9
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated
AH1822
MICROPOWER OMNIPOLAR HALL-EFFECT SENSOR
SWITCH
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products 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 our website, harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.
AH1822 Rev. 5
9 of 9
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated
Similar pages