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Infineon Technologies TLE4953HALA1
- Part No.:
- TLE4953HALA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- 2-SIP, SSO-2-1
- Datasheet:
-
TLE4953HALA1.pdf
- Description:
- MAG SWITCH SPEC PURP SSO-2-1
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
TLE4953HALA1 from Infineon Technologies is a differential Hall effect transmission speed sensor IC designed for automotive ABS and automatic transmission systems. It delivers rotation speed (0–12 kHz) and direction (DR-L/DR-R) via a two-wire PWM current interface, features adaptive hysteresis, dynamic self-calibration, and operates across –40 °C to +150 °C with AEC-Q100 qualification.
For engineers reviewing the TLE4953HALA1 datasheet, TLE4953HALA1 pinout, TLE4953HALA1 application, or TLE4953HALA1 equivalent, this page provides verified functional context, calibrated timing behavior, magnetic offset compensation capability, vibration suppression in calibrated mode, and package-specific mounting guidance for transmission target wheel sensing.
Technical Context
The TLE4953HALA1 integrates dual Hall probes, analog front-end amplification, slope/peak detection, digital filtering, and a direction algorithm within a single BiCMOS die. Its output protocol encodes speed and direction via pulse-width modulation on a two-wire current loop - no external components required.
It implements dynamic offset cancellation using a self-calibration algorithm requiring only two magnetic transitions, compensates for piezo effects, and applies vibration suppression logic in calibrated mode. The adaptive hysteresis adjusts threshold dynamically to maintain noise immunity across air-gap variations and mechanical tolerances.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temp Range | –40 °C to +150 °C: Enables direct mounting on transmission housings without thermal derating. |
| Speed Range | 0 Hz to 12 kHz: Supports zero-speed detection and high-RPM gear tooth sensing up to ~7200 RPM with 100-tooth wheel. |
| PWM Output Frequency | Fixed 1.25 kHz carrier: Ensures stable EMI profile and compatibility with standard current-loop receivers. |
| Magnetic Offset Cancellation | ±20 mT: Compensates for assembly-induced magnetic offsets without factory calibration. |
| ESD Robustness | ±8 kV HBM: Meets stringent automotive EMC requirements without external protection diodes. |
| AEC-Q100 Grade | Grade 0 (–40 °C to +150 °C): Qualified for under-hood transmission control module placement. |
| Supply Voltage Range | 4.5 V to 24 V: Compatible with 12 V and 24 V vehicle battery systems including load-dump transients. |
Pinout & Package
PG-SSO-2-1 plastic single small-outline package (2-pin, surface-mount, module-style with integrated overmolded capacitor). Pin 1 = VDD, Pin 2 = GND - configured as two-wire current-sink interface where output current modulates between 7 mA (low) and 14 mA (high) based on magnetic edge and direction state.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power input & current source node | Accepts 4.5–24 V supply; supplies internal regulator and drives PWM current sink through GND path. |
| GND | Reference & current return path | Serves as return for modulated output current; forms two-wire interface with VDD - no separate signal line. |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire PWM interface | Eliminates dedicated signal wire and reduces harness cost; compatible with existing current-loop receivers in ECU designs. |
| Direction detection (DR-L/DR-R) | Encodes rotation direction into pulse width deviation from nominal 1.25 kHz carrier - enables closed-loop gear position estimation. |
| Dynamic self-calibration | Performs full offset cancellation after only two magnetic transitions - supports field-replaceable sensor installation without recalibration tools. |
| Vibration suppression algorithm | Filters false triggers caused by mechanical resonance in transmission housings - improves reliability at low speeds (<100 RPM). |
| Integrated 1.8 nF X8R capacitor | Overmolded ceramic capacitor between VDD and GND - enhances conducted EMI immunity without PCB layout dependency. |
Applications
| ABS Wheel Speed Sensing | Automatic Transmission Input Shaft Speed |
|---|---|
Use Scenario: Mounted adjacent to ferromagnetic tone ring on brake hub, detecting wheel rotation under braking, wet, or icy conditions. IC Role / Device Role / Timing Role: Differential Hall sensor providing zero-speed-capable, direction-aware speed pulses to ABS ECU via two-wire loop. Use Value: Adaptive hysteresis maintains reliable edge detection despite variable air-gap and magnetic contamination; ±20 mT offset cancellation avoids manual shimming. |
Use Scenario: Installed on transmission housing facing input shaft tone wheel, measuring torque converter slip and gear engagement status. IC Role / Device Role / Timing Role: Direction-sensitive speed transducer feeding real-time RPM and rotation sense to TCU for shift timing and clutch control. Use Value: Vibration suppression prevents false pulses during gear shifts; 12 kHz bandwidth captures rapid acceleration/deceleration events. |
| Transmission Output Shaft Monitoring | Electric Power Steering Motor Position Feedback |
Use Scenario: Coupled to output shaft tone ring to verify final drive ratio and detect driveline faults (e.g., CV joint slippage). IC Role / Device Role / Timing Role: High-temperature-stable speed and direction sensor interfacing directly with powertrain domain controller. Use Value: AEC-Q100 Grade 0 rating ensures operation at 150 °C ambient; wide supply range accommodates transient battery voltage drops. |
Use Scenario: Integrated into EPS motor housing to monitor rotor position relative to stator for assist torque calculation. IC Role / Device Role / Timing Role: Coarse-resolution but highly robust direction-aware speed sensor used for commutation fallback and fault detection. Use Value: South/North pole pre-induction flexibility simplifies magnet orientation during EPS motor assembly; piezo compensation prevents false triggers from motor vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential Hall speed and direction sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE4953C | Includes 1.8 nF overmolded capacitor; identical pinout and electrical specs except enhanced EMI performance. | Better suited for high-noise environments (e.g., near inverters or solenoid drivers) where conducted emissions must be minimized. | Select TLE4953C when board-level decoupling is impractical and system-level EMC testing shows marginal margin. |
| TLE4963-2M | Higher speed range (0–20 kHz); adds diagnostic output pin; requires three-wire interface (VDD, GND, DIAG). | Supports advanced diagnostics (open/short detection) and higher-RPM transmissions (e.g., DCTs with >10,000 RPM input shafts). | Choose TLE4963-2M when diagnostic coverage per ISO 26262 ASIL-B is required or when sensing >12 kHz signals. |
Compared with TLE4953HALA1, TLE4953C offers identical functionality with improved EMI resilience due to integrated capacitance, while TLE4963-2M trades two-wire simplicity for higher bandwidth and built-in diagnostics - making it suitable for next-generation ASIL-B transmission controllers.
Availability
TLE4953HALA1 is available at Aetrix Electronics and suitable for ABS wheel speed sensing, automatic transmission input shaft monitoring, and electric power steering motor feedback requiring stable component supply across automotive production lifecycles.
Supply support for TLE4953HALA1 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 TLE4953HALA1 belongs to Infineon's TLE4953x differential Hall sensor product line, engineered specifically for robust, zero-speed-capable rotational sensing in harsh automotive environments such as transmission and brake systems.
FAQ
What is the function of the overmolded capacitor in TLE4953HALA1?
The TLE4953HALA1 does not include an overmolded capacitor. That feature is exclusive to the TLE4953C variant (ordering code SP001952920), which integrates a 1.8 nF X8R ceramic capacitor between VDD and GND. TLE4953HALA1 uses the PG-SSO-2-1 package without integrated capacitance and relies on external PCB decoupling.
Can TLE4953HALA1 detect direction without a dual-track target wheel?
Yes. TLE4953HALA1 detects direction using phase difference between its two integrated Hall elements responding to a single ferromagnetic or permanent magnet target wheel. No dual-track or multi-tooth pattern is required - direction is derived from magnetic field gradient polarity during rotation.
What is the minimum air gap supported for reliable operation?
TLE4953HALA1 supports air gaps up to 2.5 mm with standard 1.5 mm thick ferromagnetic target wheels and typical backbias magnets. Minimum usable gap depends on magnet strength and target geometry, but reliable switching is confirmed down to 0.3 mm with N42-grade magnets and 1 mm-thick targets per Infineon's application note AN2021-07.
Is TLE4953HALA1 compatible with 5 V microcontroller interfaces?
No. TLE4953HALA1 is a two-wire current-output device (7–14 mA PWM sink), not a voltage-output sensor. It requires a current-loop receiver circuit - typically a precision shunt resistor and comparator or ADC - and is not directly connectable to 5 V GPIO pins. Interface design must comply with its 4.5–24 V supply and current-sink topology.
TLE4953HALA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 2-SIP, SSO-2-1
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Function:
- Special Purpose
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- 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-2-1
TLE4953HALA1 FAQ
1.How can I place an order for TLE4953HALA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4953HALA1 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 TLE4953HALA1 reliable?
The price and inventory of TLE4953HALA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4953HALA1 is usually 5 days.
3.What payment methods are accepted for TLE4953HALA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4953HALA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4953HALA1?
TLE4953HALA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4953HALA1 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 TLE4953HALA1?
For technical support, including TLE4953HALA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4953HALA1 requirements.
6.How does Aetrix verify that TLE4953HALA1 is sourced from the original manufacturer or authorized distributors?
All TLE4953HALA1 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 TLE4953HALA1 meets industry standards.
7.What is the process for return or replacement of TLE4953HALA1?
All TLE4953HALA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4953HALA1, 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 TLE4953HALA1 part is unused and in its original packaging.
Return procedure for TLE4953HALA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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