TLE4998S3C Datasheet, PDF (7/36 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor

2
General
2.1
Block Diagram
Figure 2 is a simplified block diagram.
TLE4998S3C
General
VDD
Supply
Bias
EEPROM
Interface
TST^*)
spinning
A
HALL
D
Temp.
A
Sense
D
DSP
SENT
OUT
Figure 2 Block Diagram
ROM
*) TLE4998S4 only
GND
2.2
Functional Description
The linear Hall IC TLE4998S3C 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 SENT signal based on the SAE J2716 standard, which
consists of a sequence of pulses. Each transmission has a constant number of nibbles
containing the Hall value, the temperature, and status information of the sensor.The
output stage is an open-drain driver pulling the output pin to low only. Therefore, the high
level needs to be obtained by an external pull-up resistor. This output type has the
advantage that the receiver may use an even 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