Pr oduc t Br ief

T L E 4997 PG-SSO-3-10

Programmable Linear Hall Sens or

O U R T L E 4 9 9 7 is a new high precision 12-bit linear Hall sensor

with outstanding programmable functions.

Applications
■ Linear and angular position sensing
– Pedal & throttle position Benefits
– Suspension control ■ Allows stable reproduce able operation and
– Steering angle precise deterministic parameter setting
– Headlight leveling ■ Wider usable output voltage range near supply
– Seat position or occupation detection and/or ground level
■ High current sensing ■ True and reliable 12-bit performance on the
– Battery management analog output
– Motor control ■ Flexible adaptation to various magnetic
– Electronic fuse configurations
■ Allows the thermal compensation of complex
Features magnetic circuits with high accuracy without any
■ Fully digital signal processing up to 20 bit setup loops
■ 12-bit overall resolution at wide output range ■ Full automotive operation range
■ Low ratio-metric error, low integral & excellent ■ Provides an accurate calibration setup and
differential nonlinearity constant acquisition accuracy over temperature,
■ 3 magnetic ranges: ±50/100/200 mT stress and lifetime
■ Fully digital and deterministic second order ■ Allows wire breakage, sensor supply regulator
temperature compensation failures and short circuit detection for a large
■ Wide temperature range -40°C to 150°C amount of application circuits
■ Low zero field offset and exceptional low offset drift ■ Very low drifts due to mechanical stress
■ On board diagnostics for pull-up and pull-down loads, ■ Robust for automotive environments, survives
over/under voltage detection voltage drops without loosing the output value
■ Mechanical robustness ■ Allows acquisition at higher bandwidth for
■ EMC, micro-break, reverse polarity and short circuit shorter signal delays
robustness on all pins ■ Simple and reliable calibration, high data
■ Ultra low noise measurement retention - additionally protected by an internal
■ Parameter EEPROM with single bit error correction forward error correction

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S e ns o rs
 Product Brief
Block Diagram TLE4997

VDD

Interface

Bias Supply EEPROM

Enable

HALL A D OUT
D A
LP
Range DSP VDD

Temp. A
Sense D OBD

GND
ROM
Firmware

Ci rcuit Description
The linear Hall IC TLE4997 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 for A/D conversion with the supply voltage as a
reference.
The IC is produced in BiCMOS technology with high voltage capability and also providing reverse polarity protection.
Digital signal processing using a 16-bit DSP architecture and fully predictable, digital temperature compensation guarantee an
excellent long-time stability without any drifts compared to analog systems.
The minimum overall resolution is 12 bits. Nevertheless some internal stages work with resolutions up to 20 bits.

Ordering Information
Type Ordering Code Package
TLE4997 Q627005-K771 PG-SSO-3-10

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Published by Infineon Technologies AG Ordering No. B138-H8652-X-X-7600