TLE4997 Datasheet, PDF (9/36 Pages) Infineon Technologies AG – Programmable Linear Hall Sensor for Industrial Use

2
General
2.1
Block Diagram
Figure 2 shows a simplified block diagram.
Bias
HALL
Supply
A
D
Temp.
A
Sense
D
EEPROM
DSP
ROM
Interface
enable
D
A
V_DD
OBD
TLE4997I
General
V_DD
OUT
GND
Figure 2 Block Diagram
2.2
Functional Description
The linear Hall IC TLE4997I has been designed specifically to meet the demands of
highly accurate rotation and position detection, as well as for current measurement
applications.
The sensor provides a ratiometric analog output voltage, which is ideally suited to
Analog-to-Digital (A/D) conversion with the supply voltage as a reference.
The IC is produced in BiCMOS technology with high voltage capability and also provides
reverse polarity protection.
Digital signal processing using a 16-bit DSP architecture and digital temperature
compensation guarantees excellent stability over a long period of time.
The minimum overall resolution is 12 bits. Nevertheless, some internal stages work with
resolutions up to 20 bits.
Data Sheet
9
V 1.0, 2007-06