The linear Hall IC TLE4998C8 has been designed specifically to meet the requirements of highly accurate angle and position detection. The sensor provides a digital SPC (Short PWM Code) signal, based on the standardized SENT (Single Edge Nibble Transmission, SAE J2716) protocol. The SPC protocol allows transmissions initiated by the ECU. Two further operation modes are available.
• “range selection” for dynamically switching of the measurement range during operation
• “ID selection” to build a bus system with up to 4 IC’s on a single output line and a common supply, which can be individually accessed by the ECU.
Summary of Features:
Integration of two individual programmable Linear Hall sensor IC’s with SPC (Short PWM Code) protocol with enhanced interface features based on SENT (Single Edge Nibble Transmission, defined by SAE J2716)
20-bit Digital Signal Processing (DSP)
Digital temperature and stress compensation
16-bit overall resolution
Operating automotive temperature range -40°C to 125°C
Minimal drift of output signal over temperature and lifetime
Programmable parameters stored in EEPROM with single-bit error correction:
SPC protocol modes: synchronous transmission, dynamic range selection, ID selection mode
Magnetic range, sensitivity (gain), offset, and polarity of the output slope
Bandwidth
Clamping levels
Customer temperature compensation coefficients for all common magnets
Re-programmable until memory lock
Supply voltage 4.5-5.5 V (4.1-16 V extended range)
Configurable magnetic range: ±50 mT, ±100 mT, or ±200 mT
Reverse-polarity and overvoltage protection for all pins
Output short�-circuit protection
On-board diagnostics (overvoltage, EEPROM error)
Output of internal magnetic field values and temperature
Programming and operation of multiple sensors with common power supply
Two-point calibration of magnetic transfer function without iteration steps
