Product Overview
The TLE4921-5U from Infineon is a dynamic differential Hall effect sensor IC for rotational speed detection of ferromagnetic toothed wheels, featuring AC-coupled digital output and automotive-grade protection.
Key Specifications
| Manufacturer | Infineon Technologies |
| Sensor Type | Differential Hall Effect |
| Supply Voltage | 4.5V to 24V |
| Output Type | Open Collector |
| Output Current | 50 mA max |
| Supply Current | 8.8 mA typical |
| Field Range | ±80 mT differential |
| Hall Probe Spacing | 2.5 mm |
| Protection | Overvoltage, reverse polarity |
| Package | PG-SSO-4-1 |
| Operating Temperature | -40°C to +150°C |
Features
- Differential Hall sensing with 2.5mm probe spacing
- AC-coupled digital output
- High sensitivity with symmetrical thresholds
- Dynamic offset compensation
- Overvoltage and reverse polarity protection
- Output disturbance protection
- Large air-gap capability
Applications
- ABS wheel speed sensing
- Transmission speed detection
- Crankshaft position sensing
- Engine management