tle4997i Infineon Technologies Corporation, tle4997i Datasheet - Page 26

• Manufacturer Part Number: tle4997i
• Description: Programmable Linear Hall Sensor For Industrial Use
• Manufacturer: Infineon Technologies Corporation

8.1
The parameters TC
Now the output V
calculated by:
B
S
S
S
The pre-calibration at Infineon is performed in a way that following condition is met:
Within the application an additional factor
magnetic system.
condition is satisfied:
Therefore the new sensitivity parameters
calibrated setup
Preliminary Data Sheet
FSR
o
TC
TCHall
is the nominal sensitivity of the Hall probe times the Gain factor set in the EEPROM.
is the temperature dependent sensitivity factor calculated by the DSP.
is the full range magnetic field. It is depending on the range setting (e.g 100 mT).
is the temperature behavior of the Hall probe.
Parameter Calculation
-------------------- -
B
B
IN
IN
S
(
T ( )
TC
T0
S
OUT
V
TC
1
OUT
, TC
using the relation:
)
×
needs now to be modified to
for a given field
S
2
=
TCnew
and T



----------------------- -
B
B
------------ -
B
B
IN
TC
IN
TC
FSR
IN
T ( ) S
(
S
(
0
T0 )
TC
T )
2
1
may be calculated by:
×
×
=
=
T
T ( )
)
S
)
0
TC
TQ
-----------------------
×
TL
--------------------- -
8388608
TCHall
=
65536
×
S
×
B
TCnew
S
–
16TR 32
–
IN
S
TCHall
26
160
128
TCHall
S
T ( )
at a specific temperature can be roughly
B
TCnew
IN
T ( )
×
×
–
≈
(T) /
T ( )
1000000
1000000
S
×
≈
S
TC
S o
S
≈
TCnew
can be calculated out of the pre
B
TC
T ( )
1
IN
×
T ( )
(T0) will be given due to the
V
Temperature Compensation
×
DD
in a way that overall the next
S
TCHall



+
V
OS
T ( )
≈
1
V 1.01, 2006-09
TLE4997I