Product Brief

The TLE4984C is an active Hall sensor ideally suited for camshaft applications in

automotive. Its basic function is to map either a tooth or a notch of a target wheel

(e.g. gear wheel) into a unique electrical output state. The magnetic switching points

thereby have a high accuracy paired with an excellent stability due to the innovative

chopped Hall technology used for this sensor. The implemented electrical trimming

option for post-fabrication trimming sets the sensor’s switching points. This ensures

its true power on capability even in the case of production spreads such as different

magnetic configurations or misalignment. The programmability of the sensor includes

also the option to adjust the temperature coefficients to the application needs. The

standard configuration is programmed for NdFeB back bias magnets.

Additional, a self-calibration module has been implemented to achieve optimum

accuracy during normal running operation. The self calibration adjusts the offsets and

is well suited to cope with symmetrical and asymmetrical target wheels.

The TLE4984C comes in a three-pin package for the supply voltage and an open drain

output. The package has two integrated capacitors for enhanced EMC micro break

performance.

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True Power On functionality

(TPO)

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Programmable switching points

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Pre-configured magnet

temperature coefficient

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Single chip solution

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PG-SSO-3 package

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Twist-Independent Mounting

(TIM) for larger fabrication

tolerances

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Advanced performance by

dynamic self-calibrating

principle

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High accuracy and high stability

of the magnetic switching points

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High resistance to

mechanical stress

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Digital output signal

(voltage interface)

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Short-circuit protection

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Enhanced ESD performance

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Module styled package with

two integrated capacitors for

micro cuts in power supply and

enhanced EMC performance

– 47nF between V

– 4.7nF between V

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-40°C to 150°C

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Automotive qualified

Features

TLE4984C

Programmable Mono-cell Chopped Hall Sensor with

True Power On for Cam Shaft Applications

Encoder Wheels

Magnet Wheel

Hall Sensor

Signal

Processing

Circuitry