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PDF AH1895 Data sheet ( Hoja de datos )
| Número de pieza | AH1895 | |
| Descripción | MEDIUM SENSITIVITY MICROPOWER OMNIPLOAR HALL-EFFECT SWITCH | |
| Fabricantes | Diodes | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AH1895 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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AH1895
MEDIUM SENSITIVITY MICROPOWER
OMNIPLOAR HALL-EFFECT SWITCH
Description
The AH1895 is a medium sensitivity micropower Omnipolar Hall effect
switch IC with internal pull up and pull down capability. Designed for
portable and battery powered equipment such as cellular phones and
portable PCs to home appliances and industrial applications, the
average supply current is only 4.3uA at 1.85V. To support portable
equipment the AH1895 can operate over the supply range of 1.6V to
3.6V and uses a hibernating clocking system to minimize the power
consumption. To minimize PCB space the AH1895 is available in
small low profile X1-DFN1216-4 and SOT553 packages.
Pin Assignments
(Top View)
X1-DFN1216-4
(Top View)
The output is activated with either a north or south pole of sufficient
magnetic field strength. When the magnetic flux density (B)
perpendicular to the package 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 output will remain off when there is no
magnetic field.
SOT553
Features
Omnipolar Operation (North or South pole)
Supply Voltage of 1.6V to 3.6V
Medium Sensitivity
Micropower Operation
Chopper Stabilized Design Provides:
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Physical Stress
No External Pull-up Resistors Required
Good RF Noise Immunity
-40°C to +85°C Operating Temperature
High ESD capability of 8kV (Human Body Model)
Small Low Profile X1-DFN1216-4 and SOT553 Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Open and Close Detect for Cellular Phones
Holster or cover detect for cellular phones and Tablet PCs
Cover or Display Switches in Portable PCs
Digital Still, Video Cameras and Handheld Gaming Consoles
Door, Lids and Tray Position Switches
Level, Proximity and Position Switches
Contact-Less Switches in Home Appliances and Industrial
Applications
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.
Typical Applications Circuit
Note:
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 100nF typical.
AH1895
Document number: DS35742 Rev. 1 - 2
1 of 10
www.diodes.com
July 2013
© Diodes Incorporated
1 page  
AH1895
Typical Operating Characteristics
100
80 VDD = 1.6V
60
40
20
0
-20
-40
-60
-80
-100
-50 -25 0 25 50 75
Temperature (°C)
Switch Points vs Temperature
Bops
Brps
Bhy
Brpn
Bopn
100
100
80 VDD = 3.6V
60
40
20
0
-20
-40
-60
-80
-100
-50
-25
0 25 50
Temperature (°C)
75
Switch Points vs Temperature
Bops
Brps
Bhy
Brpn
Bopn
100
10
9
8
7
6
5
4
3
2
1
0
-50
3.6V
1.85V
1.6V
-25 0 25 50 75 100
Temperature (°C)
Average Supply Current vs. Temperature
100
80 VDD = 1.85V
60
40
20
0
-20
-40
-60
-80
-100
-50
-25
0
25 50 75
Temperature (°C)
Switch Points vs Temperature
Bops
Brps
Bhy
Brpn
Bopn
100
100
80 TA = +25 °C
60
40
20
0
-20
-40
-60
-80
-100
1.5 1.8 2.1 2.4 2.7 3 3.3
Supply Voltage (V)
Switch Points vs Supply Voltage
Bops
Brps
Bhy
Brpn
Bopn
3.6 3.9
10
9 TA = +25 °C
8
7
6
5
4
3
2
1
0
1.5 1.8 2.1 2.4 2.7 3 3.3 3.6 3.9
Supply Voltage (V)
Average Supply Current vs. Supply Voltage
AH1895
Document number: DS35742 Rev. 1 - 2
5 of 10
www.diodes.com
July 2013
© Diodes Incorporated
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AH1895.PDF ] | |
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