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PDF AH1804 Data sheet ( Hoja de datos )
| Número de pieza | AH1804 | |
| Descripción | MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH | |
| Fabricantes | Diodes | |
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Hay una vista previa y un enlace de descarga de AH1804 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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AH1804
MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH
Description
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.
Pin Assignments
( Top View )
GND
4
NC
3
12
VDD Output
DFN1216-4
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).
The AH1804 is available in SC59 and small low profile
DFN1216-4 packages.
(Top View)
GND 2.
SC59
3. Output
1 . VDD
Features
• 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
o Superior temperature stability
o Extremely Low Switch-Point Drift
o Insensitive to Physical Stress
• Good RF noise immunity
• -40°C to 85°C operating temperature
• Small low profile DFN1216-4 and SC59 packages
• ESD (HBM) ＞ 5KV
• “Green” Molding Compound
Applications
• 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 and industrial products
Typical Application Circuit
VDD
2.5V to 3.6V
Cin
AH1804
Output
GND
Note: Cin is for power stabilization and to strengthen the noise immunity, C = 100nF or higher must be used.
AH1804
Document number: DS35314 Rev. 2 - 2
1 of 9
www.diodes.com
September 2011
© Diodes Incorporated
Free Datasheet http://www.Datasheet4U.com
1 page  
AH1804
MICROPOWER OMNIPOLAR HALL EFFECT SENSORSWITCH
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
AH1804
Document number: DS35314 Rev. 2 - 2
5 of 9
www.diodes.com
September 2011
© Diodes Incorporated
Free Datasheet http://www.Datasheet4U.com
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet AH1804.PDF ] | |
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