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PDF FSH4917 Data sheet ( Hoja de datos )
| Número de pieza | FSH4917 | |
| Descripción | ULTRA-SENSITIVE HALL SWITCH | |
| Fabricantes | FOSLINK SEMICONDUCTOR | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de FSH4917 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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MICRO POWER, ULTRA-SENSITIVE HALL SWITCH
FEATURES
z Micro power design
z Operation with North or South pole(omni polar)
z 2.4V to 5.5V battery operation
z High sensitivity and high stability of the magnetic
switching points
z High resistance to mechanical stress
z Digital output signal
z Good RF noise immunity
z -40℃ to 85℃ operating temperature
www.DataSzheePt4rUo.gcorammming pin for switching detection of output
z Package: SOT23-6L
FUNCTIONAL BLOCK DIAGRAM
VDD
Awake & Sleep
Timing Logic
Hall Plane
VOUT
Chopper Hysteresis
Amplifier
Latch
PRG
GND
FSH4917
GENERAL DESCRIPTION
The FSH4917 is an Integrated Hall Effect Sensor
designed specifically to meet the requirements of l o w -
power devices. e.g. as an On/Off switch in Cellular
Flip-Phones, with battery operating voltages of 2.4V –
5.5V.
Precise magnetic switching points and high temperature
stability are achieved through the unique design of the
internal circuit.
An onboard clock scheme is used to reduce the average
operating current of the IC.
During the operate phase the IC compares the
actual magnetic field detected with the internally
compensated switching points. The output is switched
at the end of each operating phase.
During the Stand-by phase the output stage is latched
and the current consumption of the device reduced to
some µA.
The IC switching behavior is Omni polar, i.e. it can be
switched on with either the North or South pole of a
magnet.
The PRG pin can be connected to VDD which holds the
output VO at a High level for B=0mT; conversely the
output VO can be inverted by connecting the PRG
pin to GND, which will hold the output VO at a Low
level for B=0mT. In this later case the presence of an
adequate magnetic field will cause the output VO to
switch to a High level (i.e. off state).
TYPICAL APPLICATION CIRCUIT
6
PRG
5
GND
4
GND
FSH4917
Vco GND Vout
123
0.1μF
50KΩ
Output
_
2.4-5.5V
+
1/9 2006-12-22
1 page  
MICRO POWER, ULTRA-SENSITIVE HALL SWITCH
TYPICAL PERFORMANCE CHARACTERISTICS
FSH4917
Magnetic switching points versus temperature (VDD=2.7V)
B[G] 80
60
40
BOPS
BRPS
20
www.DataSheet4U.com0
-20
-40 BRPN
-60 BOPN
-80
-40 -20 0 20 40 60 80
T [oC]
Magnetic switching points versus supply voltage
B[G] 80
60 BOPS
40 BRPS
20
0
-20
-40 BRPN
-60 BOPN
-80
2.5 3 3.5 4 4.5 5 5.5
VDD [V]
IDD[uA] 20
18
Average current versus supply voltage
16
14
12
10
8
6
4
2
0
2.5 3 3.5 4 4.5 5 5.5
VDD [V]
Average current versus temperature (VDD=2.7V)
IDD[uA] 10
8
6
4
2
0
-40
-20
0
20 40 60 80
T [oC]
5/9 2006-12-22
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet FSH4917.PDF ] | |
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