TLE4997_08 INFINEON [Infineon Technologies AG], TLE4997_08 Datasheet - Page 17

• Manufacturer Part Number: TLE4997_08
• Description: Programmable Linear Hall Sensor
• Manufacturer: INFINEON [Infineon Technologies AG]

6
The flow diagram in
Figure 5
Magnetic Field Path
• The analog output signal of the chopped Hall cell is converted in the continuous-time
• After the A/D conversion, a digital low pass filter reduces the bandwidth
• A multiplier amplifies the value according to the gain setting (see
• The offset value is added (see
• A limiter reduces the resulting signal to 12 bits and feeds the D/A converter.
Temperature Compensation
(Details are listed in
• The output signal of the temperature cell is also A/D converted.
• The temperature is normalized by subtraction of the T
• The linear path is multiplied with the TC
Data Sheet
A/D Converter. The range of the chopped A/D Converter can bet set in several steps
(see
temperature compensation.
quadratic function).
Temperature
-T
A
Sensor
Sensor
D
0
Hall
Table
+
Signal Processing
6). This assures a suitable level for the A/D Converter.
Signal Processing Flow
Compensation
Temperature
Range
TC
A
X
Figure 5
Chapter
TC
D
2
1
1
X
X
8)
shows the data processing algorithm.
LP
Table
+
9).
1
X
17
EEPROM
Stored in
value.
Memory
Gain
Offset
X
+
0
Limiter
(Clamp)
value (zero point of the
Signal Processing
LP
DAC
V 2.08, 2008-09
Table
(Table
D
TLE4997
A
8) plus
out
10).