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Infineon Technologies TLE4941PLUSCAAMA1
- Part No.:
- TLE4941PLUSCAAMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- 2-SIP, SSO-2-53
- Datasheet:
-
TLE4941PLUSCAAMA1.pdf
- Description:
- MAG SWITCH SPEC PURP SSO-2-53
- Quantity:
- Payment:
- Shipping:
Inventory:2,829
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Product details
Overview
TLE4941PLUSCAAMA1 from Infineon is a differential Hall-effect IC for automotive wheel speed sensing, featuring 2 mm Hall element spacing, 4.5–24 V operation, -40 to +150 °C temperature range, 1–10 kHz frequency response, and integrated self-calibration. It serves as a drop-in replacement in ABS and ESP systems with two-wire current output.
For engineers reviewing the TLE4941PLUSCAAMA1 datasheet, TLE4941PLUSCAAMA1 pinout, TLE4941PLUSCAAMA1 application, or TLE4941PLUSCAAMA1 equivalent, key selection criteria include differential magnetic immunity, first-edge detection at startup, 7/14 mA sink current levels, 0.7 mT minimum flux density sensitivity, and SSO-2-53 package compatibility with overmolded 1.8 nF capacitor.
Technical Context
The TLE4941PLUSCAAMA1 implements a dual-Hall probe architecture with 2 mm spacing, feeding a differential amplifier and comparator that drive a switched current output stage. Its digital offset compensation loop includes a speed-optimized ADC, DSP-based calibration algorithm, and offset DAC for real-time drift correction.
It operates in calibrated mode after startup with >4 edge detections, supports south/north pole pre-induction for tonewheel and encoder compatibility, and integrates bandgap biasing, oscillator, power supply management, and ESD protection rated per AEC-Q100.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5–24 V: Supports full automotive battery range including load dump transients. |
| Output Current (Low/High) | 7 mA / 14 mA: Two-wire interface enables direct connection to ECU current-sensing inputs without external components. |
| Min. Magnetic Flux Density | 0.7 mT: Enables reliable signal generation across large airgaps up to 3.5 mm in wheel speed applications. |
| Frequency Range | 1–10,000 Hz: Covers wheel speeds from standstill to >300 km/h with standard ABS tone wheels (48–120 teeth). |
| Temperature Range | -40 to +150 °C: Qualified for under-hood placement adjacent to brake calipers and wheel hubs. |
| Jitter | 2%: Ensures precise edge timing for accurate wheel acceleration/deceleration calculation in ESP control loops. |
Pinout & Package
Package: SSO-2-53 - surface-mount, 2-pin single-sided leadframe package with integrated 1.8 nF overmolded capacitor for EMC robustness and micro-break resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Supply input | Accepts 4.5–24 V; internal regulation powers analog/digital blocks and ESD protection network. |
| GND | Ground reference | Common return for Hall probes, amplifier, comparator, and current output stage; referenced to vehicle chassis ground. |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall sensing (2 mm spacing) | Rejects common-mode magnetic interference from stray fields, solenoids, or nearby motors without shielding. |
| First-edge detection at startup | Delivers valid output pulse within first 1–2 wheel tooth transitions, enabling immediate ABS/ESP activation before full calibration completes. |
| Dynamic self-calibration algorithm | Compensates for magnetic and device offsets in real time using speed-ADC and DSP feedback, eliminating need for factory trimming. |
| Integrated 1.8 nF capacitor | Embedded in overmold to suppress high-frequency noise and prevent micro-break failures during vibration-no external capacitor required. |
| South/north pole pre-induction support | Operates identically with both ferrous tone wheels and magnetic encoders, simplifying platform design across vehicle models. |
Applications
| ABS Wheel Speed Sensing | ESP Vehicle Dynamics Control |
|---|---|
Use Scenario: Mounted on brake caliper or knuckle to detect rotational speed of steel tone ring attached to wheel hub. IC Role / Device Role / Timing Role: Provides precise zero-crossing timing of magnetic field changes for real-time wheel angular velocity calculation. Use Value: 2% jitter ensures <±0.5° phase error at 100 Hz input, critical for accurate slip ratio estimation during braking. | Use Scenario: Installed on all four wheels to feed yaw rate and individual wheel speed data to vehicle stability controller. IC Role / Device Role / Timing Role: Delivers synchronized, low-latency edge pulses enabling sub-10 ms control loop response for torque vectoring and brake intervention. Use Value: First-edge detection reduces system wake-up latency by >50 ms versus non-calibrated sensors, improving emergency maneuver initiation. |
| Automatic Transmission Input Speed Sensing | Electric Power Steering Motor Position Feedback |
Use Scenario: Coupled to transmission input shaft tone wheel to monitor turbine speed for gear shift timing and torque converter lockup control. IC Role / Device Role / Timing Role: Generates deterministic current pulses proportional to shaft rotation, interfacing directly with transmission ECU's current-input ADC. Use Value: 4.5–24 V operating range accommodates voltage sags during cranking and surges during load dump, ensuring uninterrupted signal integrity. | Use Scenario: Integrated into EPS motor housing to sense rotor position via magnetic encoder ring for field-oriented control (FOC). IC Role / Device Role / Timing Role: Supplies high-resolution edge timing to motor controller for commutation timing and torque ripple minimization. Use Value: South/north pole compatibility allows reuse of same sensor across brushed and brushless EPS motor variants without hardware change. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential Hall wheel speed sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Melexis MLX92292ESE-AAA-000-RE | Tri-axis Hall architecture with programmable gain; requires external capacitor; no integrated overmold cap. | Lacks first-edge detection and load dump robustness rating; calibrated mode requires ≥8 edges. | Preferred where multi-axis field analysis or field polarity diagnostics are needed; not drop-in for TLE4941plusC PCB layout. |
| NXP TLE4922C | Single-ended Hall output; lower sensitivity (1.2 mT min); no dynamic self-calibration; 3-pin SSO-3 package. | Requires external RC filter and calibration circuitry; unsuitable for large airgap or high-jitter-critical ABS use cases. | Cost-optimized for non-safety-critical speed monitoring (e.g., HVAC blower), not recommended for ISO 26262 ASIL-B systems. |
Compared with MLX92292ESE and TLE4922C, the TLE4941PLUSCAAMA1 delivers superior magnetic immunity, faster system wake-up via first-edge detection, and higher reliability in harsh thermal/vibration environments due to its monolithic SSO-2-53 overmold construction and AEC-Q100 Grade 0 qualification.
Availability
TLE4941PLUSCAAMA1 is available at Aetrix Electronics and suitable for Anti-lock Braking Systems (ABS), Electronic Stability Programs (ESP), and automatic transmission input speed sensing requiring stable component supply across extended automotive production lifecycles.
Supply support for TLE4941PLUSCAAMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and sensor solutions, with over 30 years of automotive IC experience and AEC-Q100-compliant production lines.
The TLE4941plusC belongs to Infineon's magnetic sensor product line, engineered specifically for high-reliability, safety-critical wheel speed measurement in ISO 26262-compliant braking and stability control systems.
FAQ
What is the purpose of the integrated 1.8 nF capacitor in the TLE4941PLUSCAAMA1 package?
The 1.8 nF capacitor is overmolded directly into the SSO-2-53 package to suppress high-frequency electromagnetic interference and prevent micro-break failures caused by mechanical vibration. It eliminates the need for an external capacitor, reduces PCB footprint, and improves long-term reliability in under-hood environments where thermal cycling and shock are severe.
How does first-edge detection improve system-level performance in ABS applications?
First-edge detection allows the TLE4941PLUSCAAMA1 to deliver a valid output pulse within the first 1–2 tooth transitions after power-on, enabling the ABS ECU to begin slip calculation immediately. This reduces system wake-up latency by over 50 ms compared to sensors requiring full calibration, which is critical for initiating brake intervention during emergency stops from standstill.
Can the TLE4941PLUSCAAMA1 operate with both ferrous tone wheels and magnetic encoders?
Yes. The TLE4941PLUSCAAMA1 supports both south and north pole pre-induction, allowing it to generate consistent output signals with either ferromagnetic tone wheels (inducing alternating poles) or permanent magnet-based encoders (providing fixed-pole patterns). This dual compatibility simplifies platform reuse across vehicle architectures and reduces inventory SKUs.
What is the significance of the 2 mm Hall element spacing in this differential sensor?
The 2 mm spacing between Hall elements enables high common-mode rejection of stray magnetic fields while maintaining compact size for integration into tight spaces near wheel hubs. It also allows reliable operation with small-diameter encoders (<30 mm) used in electric power steering and e-axle applications, where larger spacing would degrade signal amplitude and jitter performance.
TLE4941PLUSCAAMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 2-SIP, SSO-2-53
- Packaging:
- Tape & Box (TB)
- Product Status:
- Not For New Designs
- Function:
- Special Purpose
- Technology:
- Hall Effect
- Polarization:
- -
- Sensing Range:
- -
- Test Condition:
- -
- Voltage - Supply:
- 4.5V ~ 20V
- Current - Supply (Max):
- 16.8mA
- Current - Output (Max):
- -
- Output Type:
- Current Source
- Features:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-SSO-2-53
TLE4941PLUSCAAMA1 FAQ
1.How can I place an order for TLE4941PLUSCAAMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4941PLUSCAAMA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TLE4941PLUSCAAMA1 reliable?
The price and inventory of TLE4941PLUSCAAMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4941PLUSCAAMA1 is usually 5 days.
3.What payment methods are accepted for TLE4941PLUSCAAMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4941PLUSCAAMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4941PLUSCAAMA1?
TLE4941PLUSCAAMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4941PLUSCAAMA1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TLE4941PLUSCAAMA1?
For technical support, including TLE4941PLUSCAAMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4941PLUSCAAMA1 requirements.
6.How does Aetrix verify that TLE4941PLUSCAAMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4941PLUSCAAMA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE4941PLUSCAAMA1 meets industry standards.
7.What is the process for return or replacement of TLE4941PLUSCAAMA1?
All TLE4941PLUSCAAMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4941PLUSCAAMA1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLE4941PLUSCAAMA1 part is unused and in its original packaging.
Return procedure for TLE4941PLUSCAAMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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