55100 Datasheet, PDF (1/3 Pages) Littelfuse – Miniature Flange Mounting Proximity Sensor

Hall Effect Sensors
Flange Mount > 55100
55100 Miniature Flange Mounting Proximity Sensor
Description
The 55100 is a miniature flange mounting hall effect sensor 25.5mm (1.004”) x
11.00m (0.433”) and only 3.00mm (0.118”) high with a choice of digital or
programmable analogue outputs. It is available as three-wire (voltage output) or
two-wire (current output) versions. It’s case design enables screw or adhesive
mounting and capable of switching up to 28Vdc and 20mA. It comes with a
range of sensitivity, cable length and connector options.
Dimensions
Dimensions in mm (inch)
3.00
(.118)
11.00
(.433)
Excluding encapsulant
25.50
(1.004)
7.50
(.295)
16.60
(.654)
1.50
(.059)
(2.00)
Note: Two-wire version illustrated.
300
(11.81)
6.35 NOM.
(.250)
Center of Sensitivity
3.30x4.20 TYP.
SLOT (.130X.165)
Block Diagram
Two-wire Version
VDD
Pin 1
(Red)
Cn
Hall
Plate
Switch
GND
Pin 2
(Black)
Comparator
Clock
Current
Source
Three-wire Version
VDD
Pin 1
(Red)
Cn
Hall
Plate
Switch
Comparator
Output
VDD
Rpu
GND
Pin 2
(Black)
Clock
OUT
Pin 3
(Blue)
Notes:
1. Add capcitor Cn as shown, close to the sensor , for transient suppression if required.
2. Add pull-up resistor Rpu as shown for sinking output. The Rpu value should be calculated
using your supply voltage while keeping the ON state current at a level below the
maximum. Rpu = VDD/Io;
Rpu = 12Vdc/10mA = 1.2kOhm
Features
• Magnetically operated position
sensor
• Digital or programmable analog
types available
• Medium, high or programmable
sensitivities
• Three-wire (voltage output) or two-
wire (current output) versions
• Open Drain Output
• Reverse/Over voltage protection
• Built in temperature compensation
• Vibration 50g max. @ 50-2,000Hz
• Shock 150g max. @ 11ms ½ Sine
Benefits
• High switching speed up to 10kHz
• Long life - up to 20 billion
operations
• Unaffected by harsh environments
• Operates in static or dynamic
magnetic field
• Customer selection of cable length
and connector type
Applications
• Position and limit sensing
• RPM measurement
• Flow metering
• Commutaion of brushless dc motors
• Angle sensing
• Magnetic encoders
© 2015 Littelfuse
Revised: 11/02/15
Specifications are subject to change without notice.
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