TLE4998P3C Infineon Technologies, TLE4998P3C Datasheet - Page 25
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TLE4998P3C
Manufacturer Part Number
TLE4998P3C
Description
IC HALL SENSOR LINEAR SSO-3
Manufacturer
Infineon Technologies
Type
Linear - Programmabler
Datasheet
1.TLE4998P3C.pdf
(32 pages)
Specifications of TLE4998P3C
Sensing Range
-200mt Trip ~ 200mT Release
Voltage - Supply
4.5 V ~ 5.5 V
Current - Supply
8mA
Current - Output (max)
5mA
Output Type
Digital, PWM (Current)
Operating Temperature
-40°C ~ 150°C
Package / Case
3-SIP, SSO-3-10
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Other names
SP000481486
8
The magnetic field strength of a magnet depends on the temperature. This material
constant is specific to different magnet types. Therefore, the TLE4998P3C offers a
second-order temperature compensation polynomial, by which the Hall signal output is
multiplied in the DSP.
There are three parameters for the compensation:
• Reference temperature T
• A linear part (1
• A quadratic part (2
The following formula describes the sensitivity dependent on the temperature in relation
to the sensitivity at the reference temperature
For more information, see also the signal-processing flow in
The full temperature compensation of the complete system is done in two steps:
1. Pre-calibration in the Infineon final test
2. Overall system calibration
Table 16
Parameter
Register size
1
Quantization steps of
Register size
2
Quantization steps of
Reference temp.
Quantization steps of
1)
Data Sheet
st
nd
The parameters TC1, TC2, T0 are set to maximally flat temperature characteristics
regarding the Hall probe and internal analog processing parts.
The typical coefficients TC1, TC2, T0 of the magnetic circuitry are programmed. This
can be done deterministically, as the algorithm of the DSP is fully reproducible. The
final setting of the TC1, TC2, T0 values depend on the pre-calibrated values.
Relative range to Infineon TC1 temperature pre-calibration, the maximum adjustable range is limited by the
register-size and depends on specific pre-calibrated TL setting, full adjustable range: -2441 to +5355 ppm/°C
order coefficient
order coefficient
Temperature Compensation
TC
TC
Temperature Compensation
1
2
st
order) TC
TC
S
TC
nd
TC
TC
TC
T
1
0
2
order) TC
T ( )
1
2
Symbol Limit Values Unit
TL
TC
qTC
TQ
TC
qTC
T
qT
0
=
0
1
0
1
2
1
1
2
+
2
TC
min.
-
-1000 2500 ppm/ °C
-
- 4
- 48
1
×
15.26
0.119
(
T T
25
1
–
max.
9
8
4
64
T
0
0
)
:
+
TC
bit
ppm/ °C
bit
ppm/ °C²
ppm/ °C²
°C
°C
2
×
Temperature Compensation
(
T T
Figure
–
Notes
Unsigned integer values
1)
Unsigned integer values
2)
3)
0
)
2
5.
Rev 1.1, 2009-09
TLE4998P3C