TLE4997A8D

霍尔效应传感器

Description:

The linear Hall IC has been specifically designed for highly accurate angle and position detection. 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 together with digital temperature and analog stress compensation guarantees excellent stability over the whole temperature range and life time.

Summary of Features:

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Integration of two individual programmable Linear Hall sensor IC’s with ratiometric analog output signal.

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20-bit Digital Signal Processing DSP

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Digital temperature compensation

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12-bit overall resolution

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Operating automotive temperature range -40°C to 125°C

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Low drift of output signal over temperature and lifetime

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Programmable parameters stored in EEPROM with single-bit error correction:

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Magnetic range and sensitivity gain, polarity of the output slope

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Offset

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Bandwidth

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Clamping levels

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Temperature compensation coefficients to accomodate most common magnet materials

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Memory lock

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Supply voltage 4.5-5.5 V 4-7 V extended range

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Configurable magnetic range : ±50mT, ±100mT or ±200mT

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Reverse-polarity and overvoltage protection for all pins

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Output short-circuit protection

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On-board diagnostics wire breakage detection, EEPROM error, overvoltage

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Digital readout of internal temperature and magnetic field values in calibration mode

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Programming and operation of multiple sensors with common power supply

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Two-point calibration of magnetic transfer function