Dynamic differential hall effect sensor ic Infineon TLE49215UHALA1 ideal for ferromagnetic toothed wheel detection
Product Overview
The TLE4921-5U is a dynamic differential Hall Effect sensor IC designed for high-sensitivity and stable rotational speed detection and timing applications. It offers symmetrical thresholds and superior temperature stability, ensuring a consistent duty cycle. This sensor is ideal for detecting ferromagnetic toothed wheels in systems like anti-lock braking systems and transmissions. Its integrated circuit provides a digital output signal with a frequency proportional to the speed of rotation. Unlike other sensors, it is unaffected by radial vibration and requires no external signal processing. The TLE4921-5U supports both two-wire and three-wire configurations and includes protection against overvoltage, reversed polarity, and electrical disturbances.
Product Attributes
- Brand: Infineon Technologies
- Product Type: Dynamic Differential Hall Effect Sensor IC
- Marking: TLE4921-5U
- Ordering Code: SP000013593
- Package: PG-SSO-4-1
Technical Specifications
| Parameter | Symbol | Limit Values | Unit | Remarks |
|---|---|---|---|---|
| Supply voltage | VS | 4.5 24 | V | Operating Range |
| Junction temperature | Tj | -40 150 | C | Operating Range |
| Pre-induction | B0 | -500 500 | mT | at Hall probe; independent of magnet orientation |
| Differential induction | B | -80 80 | mT | Operating Range |
| Supply current | IS | 3.8 8.0 | mA | VQ = high; IQ = 0 mA |
| Output saturation voltage | VQSAT | 0.6 | V | IQ = 40 mA |
| Center of switching points | Bm | -1 1 | mT | -20 mT < B < 20 mT; f = 200 Hz |
| Hysteresis | BH | 0.5 2.5 | mT | f = 200 Hz, B = 20 mT |
| Output rise time | tr | 0.5 | s | IQ = 40 mA, CL = 10 pF |
| Output fall time | tf | 0.5 | s | IQ = 40 mA, CL = 10 pF |
| Filter input resistance | RC | 35 52 | k | 25C 2C |
| Filter sensitivity to B | SC | -5 | mV/ mT | |
| Frequency | f | 2000 | Hz | B = 5 mT |
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