Durable Infineon TLE4941CHAMA2 wheel speed sensor featuring fast power up time and low cut off frequency
Product Overview
The TLE4941C is a differential two-wire Hall Effect sensor IC designed for wheel speed applications in modern vehicle dynamics control systems and ABS. It provides rotational speed information with a two-wire current interface, operating without external components. The sensor boasts a fast power-up time, low cut-off frequency, and excellent accuracy and sensitivity, making it suitable for harsh automotive environments. It offers high resistance to piezo effects, large operating air-gaps, and a wide operating temperature range. The TLE4941C integrates a 1.8 nF capacitor for improved EMI performance and utilizes state-of-the-art BiCMOS technology for monolithic integration of active sensor areas and signal conditioning circuitry. Its dynamic self-calibration principle and integrated dynamic offset compensation simplify manufacturing and eliminate magnet offsets.
Product Attributes
- Brand: Infineon Technologies
- Package Type: PG-SSO-2-4
- Technology: BiCMOS
- RoHS Compliance: Yes (when marked with 'G')
- Lead Plating: Pure tin (green lead plating)
- Leadframe Material: Wieland K62 (UNS: C18090), CuSn1CrNiTi
Technical Specifications
| Parameter | Symbol | Limit Values (min.) | Limit Values (typ.) | Limit Values (max.) | Unit | Remarks | |
|---|---|---|---|---|---|---|---|
| Product Name | TLE4941C | ||||||
| Product Type | Diff. Speed Sensor | ||||||
| Ordering Code | SP001952924 | ||||||
| Package | PG-SSO-2-4 | ||||||
| Supply Voltage | VCC | 4.5 | 20 | V | Directly on IC leads; includes not the voltage drop at RM | ||
| Junction Temperature | Tj | -40 | 150 | C | - 170 500 h, VCC 16.5 V, increased jitter permissible | ||
| Differential Induction | B | -120 | +120 | mT | |||
| Supply Current (LOW) | ILOW | 5.9 | 7 | 8.4 | mA | ||
| Supply Current (HIGH) | IHIGH | 11.8 | 14 | 16.8 | mA | ||
| Output Rise Slew Rate | tr | 7.5 | 26 | mA/s | RM 150 | ||
| Output Fall Slew Rate | tf | 7.5 | 26 | mA/s | RM 150 | ||
| Limit Threshold (1 Hz | BLimit | 0.35 | 1.5 | mT | Magnetic amplitude values, sine magnetic field, limits refer to the 50% criteria. | ||
| Magnetic edges required for initial calibration | nstart | 3 | 6 | magn. edges | The sensor requires up to nstart magnetic switching edges for valid speed information after power-up or after a stand still condition. | ||
| Frequency (calibrated mode) | f | 2500 | 10000 | Hz | |||
| Duty Cycle | duty | 40 | 50 | 60 | % | B = 2 mT sin-wave | |
| Jitter (1 Hz | SJit-close | 2 | % | 1 value, VCC = 12 V, B 2 mT | |||
| Jitter (2500 Hz | SJit-close | 3 | % | 1 value, VCC = 12 V, B 2 mT | |||
| Jitter (1 Hz | SJit-far | 4 | % | 1 value, VCC = 12 V, 2 mT B > BLimit | |||
| Jitter (2500 Hz | SJit-far | 6 | % | 1 value, VCC = 12 V, 2 mT B > BLimit | |||
| Jitter at board net ripple | SJit-AC | 2 | % | VCC = 13 V 6 Vpp, 0 | |||
| ESD-Protection (HBM) | VESD | 12 | kV | R = 1.5 k, C = 100 pF | |||
| Package Outline Dimensions | mm | See Figure 12 | |||||
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.