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Durable Infineon TLE4941CHAMA2 wheel speed sensor featuring fast power up time and low cut off frequency

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Durable Infineon TLE4941CHAMA2 wheel speed sensor featuring fast power up time and low cut off frequency

Voltage - Supply : 4.5V~20V

Description : SSO-2 Switches (Solid State) RoHS

Mfr. Part # : TLE4941CHAMA2

Model Number : TLE4941CHAMA2

Package : SSO-2

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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 < f < 2500 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 < f < 2500 Hz, Tj < 150C) SJit-close 2 % 1 value, VCC = 12 V, B 2 mT
Jitter (2500 Hz < f < 10000 Hz, Tj < 150C) SJit-close 3 % 1 value, VCC = 12 V, B 2 mT
Jitter (1 Hz < f < 2500 Hz, Tj < 150C) SJit-far 4 % 1 value, VCC = 12 V, 2 mT B > BLimit
Jitter (2500 Hz < f < 10000 Hz, Tj < 150C) 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 < f < 50 kHz, B = 15 mT
ESD-Protection (HBM) VESD 12 kV R = 1.5 k, C = 100 pF
Package Outline Dimensions mm See Figure 12

2410311240_Infineon-TLE4941CHAMA2_C1559765.pdf


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