TLE4921M5U Infineon Technologies, TLE4921M5U Datasheet - Page 14

• Manufacturer Part Number: TLE4921M5U
• Description: IC HALL EFFECT SENSOR SSO-4
• Manufacturer: Infineon Technologies
• Type: Special Purposer

Specifications of TLE4921M5U

• Sensing Range: 0mT Trip, 0mT Release
• Voltage - Supply: 4.5 V ~ 24 V
• Current - Supply: 8.8mA
• Current - Output (max): 50mA
• Output Type: Digital, Differential
• Features: High Sensitivity
• Operating Temperature: -40°C ~ 170°C
• Package / Case: 4-SIP, SSO-4-01
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SP000098770

6
Two possible applications are shown in
The difference between two-wire and three-wire application is shown in
Gear Tooth Sensing
In the case of ferromagnetic toothed wheel application the IC has to be biased by the
south or north pole of a permanent magnet (e.g. SmCO
with the dimensions 8 mm × 5 mm × 3 mm) which should cover both Hall probes.
The maximum air gap depends on:
Figure 5
Figure 6
Data Sheet
– the magnetic field strength (magnet used; pre-induction) and
– the toothed wheel that is used (dimensions, material, etc.; resulting differential field)
DIN
d
z
m
T
d
diameter (mm)
number of teeth
module
pitch
a centered distance
b Hall probes to
L IC surface to
a = 2.5 mm
b = 0.3 mm
Application Configurations
of Hall probes
IC surface
tooth wheel
Sensor Spacing
Tooth Wheel Dimensions
T
= π ×
T
m
=
d
m
/
z
(mm)
(mm)
AEA01260
Figure 7
14
Conversion DIN – ASA
m
T
ASA
p
PD
CP
and
= 25.4 mm/p
= 25.4 mm CP
L
Figure 8
b
diameter pitch
pitch diameter PD =
circular pitch
5
Application Configurations
(Toothed and Magnet Wheel).
(Vacuumschmelze VX145))
a
N
S
p
CP = 1 inch × π/
=
AEA01259
Figure
z
z
TLE4921-5U
/
/
d
p
V 1.1, 2008-01
(inch)
(inch)
9.
p