My Inquiry
My Account
Infineon Technologies TLE4941-1C-HT
- Part No.:
- TLE4941-1C-HT
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- 2-SIP, SSO-2-2
- Datasheet:
-
TLE4941-1C-HT.pdf
- Description:
- MAG SWITCH SPEC PURP SSO-2-2
- Quantity:
- Payment:
- Shipping:
Inventory:4,610
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLE4941-1C-HT from Infineon Technologies is a smart Hall effect sensor IC designed for active wheel speed sensing in automotive ABS and transmission systems. It features differential Hall probes (2.5 mm spacing), dynamic self-calibration, 1–5000 Hz frequency range, <1.5 mT minimum magnetic flux density detection, and operates from 4.5–20 V over –40 to +150 °C.
For engineers reviewing the TLE4941-1C-HT datasheet, TLE4941-1C-HT pinout, TLE4941-1C-HT application, or TLE4941-1C-HT equivalent, key selection criteria include two-wire current-loop interface compatibility, ultra-thin PG-SSO-2-2 package constraints, high-temperature operation up to +150 °C, and magnetic edge-triggered output switching behavior.
Technical Context
The TLE4941-1C-HT implements a fully integrated signal path comprising dual Hall probes, a low-noise differential amplifier with noise-limiting low-pass filtering, and a comparator driving a switched-current output stage. Its offset cancellation loop uses a signal-tracking ADC, digital signal processor (DSP), and DAC to achieve stable operation across temperature and mechanical stress.
It delivers square-wave speed-frequency output via a two-wire current interface (7 mA low / 14 mA high), with power-on time under 1 ms and jitter below 2 % - enabling precise timing capture in fast-rotating wheel applications where magnetic field gradients are shallow and signal-to-noise ratio is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 4.5–20 V: Supports direct battery-supplied automotive systems without external regulation. |
| Supply Current (L/H) | 7 / 14 mA: Enables robust two-wire current-loop signaling with minimal wiring impact. |
| Min ΔB Detection | <1.5 mT: Allows reliable sensing with small air gaps or weak magnets in compact wheel designs. |
| Frequency Range | 1–5000 Hz: Covers full operational speed range from parking to highway for passenger and commercial vehicles. |
| Temperature Range | –40 to +150 °C: Qualified for under-hood placement near brake calipers or gearboxes. |
| Jitter | <2 %: Ensures accurate RPM calculation and anti-lock control loop stability. |
Pinout & Package
Package: PG-SSO-2-2 - ultra-thin surface-mount package (2.0 × 1.5 × 0.6 mm) optimized for high-temperature automotive mounting directly on sensor brackets or hubs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply input | Accepts 4.5–20 V; internal regulator powers analog/digital blocks and enables two-wire interface compliance. |
| GND | Ground reference | Common return for Hall probes, signal chain, and output current sink; tied to vehicle chassis ground. |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall probe pair | 2.5 mm spacing enables rejection of common-mode magnetic interference and stray fields. |
| Dynamic self-calibration | Real-time offset cancellation within few magnetic transitions eliminates need for factory trimming or recalibration. |
| Overmoulded 1.8 nF capacitor | Integrated EMC filter reduces radiated emissions and improves immunity in noisy engine bay environments. |
| Magnetic edge-triggered output | Switches on first magnetic edge (–1 version), enabling deterministic phase alignment for ABS control algorithms. |
Applications
| ABS Wheel Speed Sensing | Transmission Input/Output Speed Sensing |
|---|---|
Use Scenario: Mounted adjacent to rotating tone ring on brake hub or CV joint to monitor wheel rotation during braking events. IC Role / Device Role / Timing Role: Provides edge-aligned square-wave speed signal to ABS ECU for real-time slip ratio calculation. Use Value: Sub-2% jitter and <1 ms power-on time ensure immediate responsiveness during emergency braking sequences. | Use Scenario: Installed on gearbox housing to detect input shaft or countershaft rotation for shift control and torque management. IC Role / Device Role / Timing Role: Delivers frequency-proportional output used by TCU to determine gear engagement status and driveline synchronization. Use Value: High-temperature rating (+150 °C) and integrated EMC capacitor allow direct mounting without heatsinking or shielding. |
| Electric Power Steering Motor Speed Feedback | Hybrid/EV Motor Resolver Backup Sensing |
Use Scenario: Integrated into EPS motor assembly to monitor rotor position via ferromagnetic target wheel for assist torque modulation. IC Role / Device Role / Timing Role: Supplies low-latency speed feedback to EPS controller for adaptive steering response and fault detection. Use Value: Differential sensing rejects EMI from nearby high-current motor phases, ensuring signal integrity in compact EPS modules. | Use Scenario: Used as redundant speed sensor alongside resolver in traction motor assemblies for functional safety compliance (ASIL-B). IC Role / Device Role / Timing Role: Provides independent rotational speed data to safety MCU for cross-checking resolver outputs during startup and fault conditions. Use Value: Self-calibrating architecture maintains accuracy despite thermal drift across wide ambient ranges encountered in EV drivetrains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar active wheel speed sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE4941-1K | Same core IC but in PG-SSO-2-1 package (no integrated 1.8 nF capacitor); lower EMC performance. | Suitable for shielded or lower-noise subsystems where external filtering is available. | Select when cost sensitivity outweighs need for integrated EMC hardening. |
| ATS6858LSGT | Programmable gain, dual-output (speed + direction); requires external bias magnet and supply regulation. | Supports directional sensing and variable air-gap compensation - not drop-in compatible. | Choose only when bidirectional detection or adaptive thresholding is required in next-gen systems. |
Compared with TLE4941-1K and ATS6858LSGT, the TLE4941-1C-HT offers superior out-of-box EMC robustness and simplified two-wire integration for high-volume ABS deployments, while avoiding the complexity and BOM overhead of external components or programmable configuration.
Availability
TLE4941-1C-HT is available at Aetrix Electronics and suitable for automotive ABS systems, transmission speed monitoring, electric power steering feedback, and hybrid vehicle motor redundancy requiring stable component supply across extended temperature and long lifecycle demands.
Supply support for TLE4941-1C-HT 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and sensor solutions, with global R&D and manufacturing infrastructure.
The TLE4941 product line targets high-reliability active wheel speed sensing for automotive safety-critical systems, emphasizing integration, temperature resilience, and electromagnetic compatibility in harsh under-hood environments.
FAQ
What distinguishes the "-1C" suffix in TLE4941-1C-HT?
The "-1C" denotes the –1 version (edge-triggered output) with integrated 1.8 nF overmoulded capacitor (C-version) for enhanced EMC performance, packaged in PG-SSO-2-2. The "HT" suffix confirms extended high-temperature qualification up to +150 °C, validated per AEC-Q100 Grade 0 requirements.
Does TLE4941-1C-HT require an external magnet?
Yes - it requires a back-biasing permanent magnet to generate the magnetic field for ferromagnetic target sensing. The IC itself contains no magnet; its differential Hall probes detect flux changes induced by rotating ferrous tone rings or gears in proximity to the magnet.
Can TLE4941-1C-HT operate with a 3.3 V microcontroller interface?
No - it does not provide a logic-level output. It uses a two-wire current-loop interface (7/14 mA), requiring a current-sensing resistor and voltage translator circuit to interface with 3.3 V MCUs. Direct connection to GPIO pins is unsafe and unsupported.
Is the self-calibration process automatic and continuous?
Yes - the dynamic self-calibration runs continuously during operation using a feedback loop with ADC/DSP/DAC. It cancels magnetic and device offsets within a few magnetic transitions, requiring no user intervention, initialization sequence, or external calibration equipment.
TLE4941-1C-HT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- TLE
- Package/Case:
- 2-SIP, SSO-2-2
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-SSO-2-2
TLE4941-1C-HT FAQ
1.How can I place an order for TLE4941-1C-HT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4941-1C-HT 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 TLE4941-1C-HT reliable?
The price and inventory of TLE4941-1C-HT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4941-1C-HT is usually 5 days.
3.What payment methods are accepted for TLE4941-1C-HT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4941-1C-HT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4941-1C-HT?
TLE4941-1C-HT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4941-1C-HT 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 TLE4941-1C-HT?
For technical support, including TLE4941-1C-HT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4941-1C-HT requirements.
6.How does Aetrix verify that TLE4941-1C-HT is sourced from the original manufacturer or authorized distributors?
All TLE4941-1C-HT 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 TLE4941-1C-HT meets industry standards.
7.What is the process for return or replacement of TLE4941-1C-HT?
All TLE4941-1C-HT units undergo pre-shipment inspection (PSI). If there is an issue with TLE4941-1C-HT, 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 TLE4941-1C-HT part is unused and in its original packaging.
Return procedure for TLE4941-1C-HT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE4941-1C-HT Tags
-
TCS40DLR,LF
Toshiba Semiconductor and Storage
-
DRV5032FBDBZR
Texas Instruments
-
DRV5032FADBZR
Texas Instruments
-
AH1912-FA-7
Diodes Incorporated
-
AH1913-W-7
Diodes Incorporated
-
AH1911-W-7
Diodes Incorporated
-
TLI49631MXTSA1
Infineon Technologies
-
SM453R
Honeywell Sensing and Productivity Solutions
-
MLX90248ESE-EBA-000-RE
Melexis Technologies NV
-
MLX92213ELD-AAA-000-RE
Melexis Technologies NV
-
TLE4913HTSA1
Infineon Technologies
-
US5781ESE-AAA-000-RE
Melexis Technologies NV
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
