TLE4998P3CE1200 Datasheet, PDF (7/32 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

2
General
2.1
Block Diagram
Figure 2 is a simplified block diagram.
Bias
s pinning
H ALL
Supply
A
D
Temp.
A
Sense
D
EEPROM
DSP
ROM
TLE4998P3C E1200
General
Interface
PWM
VDD
OUT
GND
Figure 2 Block Diagram
2.2
Functional Description
The linear Hall IC TLE4998P3C E1200 has been designed specifically to meet the
requirements of highly accurate rotation and position detection, as well as for current
measurement applications. Two capacitors are integrated on the lead frame, making this
sensor especially suitable for applications with demanding EMC requirements.
The sensor provides a digital PWM signal, which is ideally suited for direct decoding by
any unit measuring a duty cycle of a rectangular signal (usually a timer/capture unit in a
microcontroller).
The output stage is an open-drain driver pulling the output pad to low only. Therefore,
the high level must be obtained by an external pull-up resistor. This output type has the
advantage that the receiver may use even a lower supply voltage (e.g. 3.3 V). In this
case, the pull-up resistor must be connected to the given receiver supply.
Data Sheet
7
Rev 1.1, 2009-09