TLE4990-E6785 Infineon Technologies AG, TLE4990-E6785 Datasheet - Page 7

• Manufacturer Part Number: TLE4990-E6785
• Description: Programmable Linear Output Hall Sensor
• Manufacturer: Infineon Technologies AG

Block Diagram
Figure 2
Figure 2
Principle of Operation
• A magnetic flux is measured by a Hall-Effect cell.
• The Temperature compensation modulates the bias current of the hall cell.
• The output signal from the Hall-Effect cell is amplified.
• A zero field voltage is added.
• The output voltage range can be clamped by limiters.
• The final output value is amplified and buffered.
• The output voltage is proportional to the supply voltage (ratiometric bahaviour).
• An OBD (On Board Diagnistics) circuit connects the output to
Data Sheet
errors.
Hallprobe
Chopped
shows a simplified block diagram.
OTPROM/RAM
Block Diagram
Temperature
Linearization
Modulator
Gain
Demodulator
7
Programmable Linear Hall Sensor
Interface
+
Zero magnetic
field voltage
Sample &
Clock
Hold
Functional Description
V
DD
Clamping
Amplifier,
Buffer
or GND in case of
V 2.0, 2004-05
TLE4990
Out