1. Infineon
  2. Sensor
  3. Magnetic Sensors
  4. Magnetic Position Sensors
  5. Linear sensors

Infineon TLE4999C8XUMA1

The Infineon XENSIV™ TLE4999C8 provides all means that are necessary to fulfill the state-of-the-art functional safety requirements on system level. It is developed in full compliance with ISO 26262. The device provides high redundancy on one chip by means of two sensor elements included within one monolithic silicon design. The two diverse Hall sensor elements („main” and „sub”) have internally separated signal paths within the chip. A plausibility check secures the high diagnostic coverage required for premium functional safety compliant systems up to ASIL D.The TLE4999C8 supply architecture splits up into a digital supply and two analog supply circuits. This basic supply set-up separates the fast switching digital part from the noise-sensitive analog circuits. Two analog supply domains are the basis to ensure a good separation of the internal voltage regulation for the main and sub Hall sensor elements. Following the signal part, one finds that each sensor element has its own analog - digital converter, digital signal processor (DSP) and memory area to ensure the maximum independency and superb noise performance. The two DSPs use their individual temperature-, stress- and Hall signal information of the related sensor cell as well as the compensation parameters stored in the EEPROM to calculate two independent output values.Additionally the sensor offers a multi-point calibration with 9 selectable set points for enhanced linearization of the output signal. For an easy and flexible adaptation to non-linearity of magnetic circuit designs, the chip provides 5 different calibration characteristics.The fast digital Short-PWM-Code (SPC) communication interface provides unit times from 3.0 us down to 0.5µs for transmission of main and sub signals in less than 500 µs and enables for 4 sensors on a single data line of a SPC bus. The sensor provides 4 different output signal modes (12/14/16bit), protected by CRC and a rolling counter.Several crosschecks of the TLE4999C8 on
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