AH1803 Datasheet PDF - Diodes
| Part Number | AH1803 | |
| Description | ULTRA-SENSITIVE HALL EFFECT SWITCH | |
| Manufacturers | Diodes | |
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Features
AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
General Description
• Micropower operation
• Operation with North or South Pole
• 2.4 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
• Low profile 3 pin SC59 (commonly known as SOT23 in
Asia) and DFN2020-6 package
• ESD (HBM) ＞ 4KV for DFN2020-6
• SC59 (commonly known as SOT23 in Asia) and
DFN2020-6: Available in “Green” Molding Compound
(No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
AH1803 is with two Hall effect plates and a CMOS output driver,
mainly designed for battery–operation, hand-held equipment
(such as Cellular and Cordless Phone, PDA). The total operation
power is down to 24uW in the 3V supply.
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 operate point
(Bop), the output will be turned on (low), the output is held until
B is lower than release point (Brp), then turned off (High).
Applications
• Cellular phone
• PDA
• Cordless phone
Typical Circuit
2.4~5.5V
C*
AH1803
GND
Output
* C is for power stabilization and to strengthen the noise immunity, the
recommended capacitance is 10nF~100nF.
AH1803 Rev. 9
DS31193
1 of 9
www.diodes.com
OCTOBER 2009
© Diodes Incorporated
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AH1803
MICROPOWER, ULTRA-SENSITIVE HALL EFFECT
SWITCH
Magnetic Characteristics (TA = 25°C, Vdd = 3V, Note 6, 7)
Symbol
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 )
Parameter
Operation Point
Release Point
Hysteresis
Min
2
-4
1
-
0.5
Typ.
3
-3
2
-2
1
(1mT = 10G)
Max Unit
4
-2
- mT
-1
-
Notes:
6. Typical data is at TA=25 °C, Vdd=3V, and for design information only.
7. Magnetic characteristics are for design information, which will vary with supply voltage, operating temperature and after soldering.
Output
Output
Vcc ( off-state )
Turn on
Bhy
Turn off
( on-state )
Vsat
Bopn Brpn 0
( Magnetic flux density B )
( off-state ) Vcc
Turn off
Bhy
Turn on
Vsat
( on-state )
0 Brps Bops
( Magnetic flux density B )
Performance Characteristics
(1) SC59 (commonly known as SOT23 in Asia) and DFN2020-6
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 )
300
P ow er D issipation C urve
200
100
0
-400 2 5
50
75 85 100
125
150
TA (oC)
AH1803 Rev. 9
DS31193
5 of 9
www.diodes.com
OCTOBER 2009
© Diodes Incorporated
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for AH1803 electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ AH1803.PDF Datasheet ] | |
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