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Infineon Technologies TLE4923HALA1
- Part No.:
- TLE4923HALA1
- Manufacturer:
- Infineon Technologies
- Category:
- Switches (Solid State)
- Package:
- 3-SIP, SSO-3-06
- Datasheet:
-
TLE4923HALA1.pdf
- Description:
- MAG SWITCH SPEC PURP SSO-3-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,449
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Product details
Overview
TLE4923HALA1 from Infineon Technologies is a dynamic differential Hall effect sensor IC designed for robust rotational speed and position sensing in automotive powertrain systems. It features ±40 mT differential field detection range, symmetrical switching thresholds (±1.5 mT typical), 2-wire current-loop interface (4–12 mA active high), -40°C to 150°C operating temperature, and integrated reverse-polarity protection - deployed in ABS wheel speed sensing and crankshaft timing applications.
For engineers reviewing the TLE4923HALA1 datasheet, TLE4923HALA1 pinout, TLE4923HALA1 application, or TLE4923HALA1 equivalent, key selection considerations include its differential Hall architecture for vibration immunity, external capacitor-controlled high-pass filter time constant, bipolar magnetic pre-induction capability (south/north pole), and PG-SSO-3-6 surface-mount package with center-aligned sensitive area.
Technical Context
The TLE4923HALA1 implements a dual-Hall-probe topology spaced 2.5 mm apart to reject common-mode magnetic interference and radial vibration. Its internal signal chain includes a differential amplifier, active high-pass filter (time constant set by external C-pin capacitor), Schmitt trigger with hysteresis, and switched current-source output stage.
It operates as a two-wire current-sink device: low state draws ~4 mA, high state draws ~12 mA - enabling direct integration into vehicle wiring harnesses without separate signal return lines. The IC requires no external biasing magnet polarity alignment due to its ability to accept south- or north-pole pre-induction up to 500 mT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Differential Field Range | ±40 mT - enables reliable detection across large airgaps and misaligned ferromagnetic targets |
| Switching Threshold Symmetry | ±1.5 mT (typ) - ensures stable 50% duty cycle for toothed-wheel timing signals |
| Output Interface | 2-wire current loop (4–12 mA) - eliminates need for dedicated signal ground, reduces wiring cost |
| Operating Temperature | -40°C to +150°C - qualified for under-hood engine and transmission mounting locations |
| Supply Voltage Range | 3.0 V to 24 V - compatible with 12 V and 24 V automotive battery systems |
| Reverse Polarity Protection | Integrated on VS pin - prevents damage during battery connection reversal in service environments |
| Low Cut-off Frequency | Adjustable via external capacitor (C-pin) - enables tuning for slow-speed crankshaft or fast-speed wheel applications |
Pinout & Package
Package: PG-SSO-3-6 - surface-mount, 3-pin single-side leaded package with exposed thermal pad; sensitive area centered between pins 1 and 2, aligned to mechanical center of package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VS) | Supply voltage input with reverse-polarity protection | Accepts 3–24 V DC; internal clamp prevents damage from reversed battery connection |
| 2 (GND) | Ground reference and substrate connection | Provides return path for output current sink and internal bias networks |
| 3 (C) | External capacitor connection for high-pass filter | Defines time constant (τ ≈ R × C) to suppress DC magnetic offsets and aging drift |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall probe spacing | 2.5 mm center-to-center - rejects radial vibration and common-mode EMI in rotating assemblies |
| Symmetrical magnetic thresholds | ±1.5 mT (typ) - delivers precise zero-crossing detection for accurate RPM and phase measurement |
| Bipolar pre-induction support | South or north pole magnet mounting - simplifies mechanical design and eliminates magnet orientation constraints |
| Dynamic offset compensation | Active high-pass filtering via external C-pin - eliminates thermal drift and magnet aging effects without calibration |
| Piezo-resistivity mitigation | Optimized die layout and stress relief - maintains accuracy under mechanical shock and thermal cycling |
Applications
| ABS Wheel Speed Sensing | Crankshaft Position Timing |
|---|---|
Use Scenario: Mounted adjacent to rotating steel tone ring on vehicle wheel hub, detecting tooth passage through varying airgap and road-induced vibration. IC Role / Device Role / Timing Role: Differential Hall sensor providing digital pulse train synchronized to wheel rotation, immune to radial jolt and magnetic ripple. Use Value: Delivers stable zero-crossing detection at speeds down to 0.1 rpm and up to 10,000 rpm without signal conditioning. | Use Scenario: Installed near engine crankshaft reluctor wheel in high-temperature, oil-contaminated engine bay environments. IC Role / Device Role / Timing Role: Two-wire current-output sensor generating timing pulses for ignition and fuel injection control. Use Value: Operates reliably from -40°C cold start to +150°C under-hood conditions with no external regulator or filter components. |
| Transmission Input Shaft RPM | Camshaft Phase Detection |
Use Scenario: Integrated into automatic transmission housing to monitor input shaft speed for torque converter lock-up and gear shift logic. IC Role / Device Role / Timing Role: Robust magnetic field detector converting gear tooth transitions into proportional frequency output. Use Value: Maintains consistent switching thresholds across temperature and mechanical stress, reducing ECU software compensation overhead. | Use Scenario: Paired with camshaft reluctor to determine valve timing position relative to crankshaft for variable valve timing (VVT) control. IC Role / Device Role / Timing Role: High-accuracy phase comparator delivering synchronized edge transitions for cylinder-specific combustion timing. Use Value: Symmetrical thresholds ensure minimal phase error (< ±0.5° crank angle) over full operating temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential Hall speed and position sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE4921-3U | 3-wire interface (separate VS, GND, OUT); identical core sensing architecture and thresholds | Requires dedicated signal return line; less suitable for legacy 2-wire harness architectures | Select when system-level wiring supports independent signal ground and higher noise immunity is prioritized |
| ATS675LSGT | Programmable gain and output type (current/voltage); wider supply range (2.7–24 V); no external capacitor required | Lacks bipolar pre-induction flexibility; optimized for high-speed (>20 krpm) applications | Select when adaptive threshold tuning or ultra-high-speed operation is required, and magnet polarity alignment can be controlled |
Compared with TLE4923HALA1, the TLE4921-3U offers superior noise margin but adds wiring complexity, while the ATS675LSGT provides programmability at the cost of fixed magnet orientation requirements - making TLE4923HALA1 optimal for cost-sensitive, vibration-prone 2-wire automotive timing systems.
Availability
TLE4923HALA1 is available at Aetrix Electronics and suitable for anti-lock braking systems, engine crankshaft timing, transmission RPM monitoring, and camshaft phase detection requiring stable component supply across automotive production lifecycles.
Supply support for TLE4923HALA1 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 TLE4923HALA1 belongs to Infineon's TLE49xx family of Hall-effect sensors, engineered specifically for high-reliability rotational sensing in harsh automotive environments where vibration immunity, wide temperature operation, and wiring simplicity are critical.
FAQ
What is the function of the external capacitor connected to pin 3 (C)?
The external capacitor on pin 3 sets the time constant of an internal active high-pass filter that dynamically compensates for magnetic and thermal offsets. Typical values range from 10 nF to 100 nF, determining cutoff frequency (e.g., 10 nF ≈ 10 Hz). This eliminates need for factory calibration and maintains accuracy across temperature and aging.
Can TLE4923HALA1 operate with either north or south pole magnet orientation?
Yes - the TLE4923HALA1 supports bipolar pre-induction: either magnet pole may be placed against the unmarked rear side of the package. Switching points remain stable up to ±500 mT bias field, enabling flexible mechanical integration without magnet polarity verification during assembly.
How does the 2-wire interface affect system wiring and diagnostics?
The 2-wire interface uses the same pair for power and signal: low state draws ~4 mA, high state ~12 mA. This reduces harness weight and connector pins, and allows open-circuit and short-circuit diagnostics via current monitoring at the ECU - no additional wires or pull-ups required.
Is TLE4923HALA1 qualified for under-hood automotive use?
Yes - it is AEC-Q100 qualified for Grade 0 (-40°C to +150°C ambient), features integrated reverse-polarity protection, and is packaged in PG-SSO-3-6 with enhanced thermal dissipation. It meets ISO 16750 environmental stress requirements for vibration, thermal shock, and chemical exposure in engine compartments.
TLE4923HALA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- TLE
- Package/Case:
- 3-SIP, SSO-3-06
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Function:
- Special Purpose
- Technology:
- Hall Effect
- Polarization:
- -
- Sensing Range:
- -
- Test Condition:
- -
- Voltage - Supply:
- 4.5V ~ 18V
- Current - Supply (Max):
- 13.6mA
- Current - Output (Max):
- -
- Output Type:
- Digital
- Features:
- Temperature Compensated
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P-SSO-3-6
TLE4923HALA1 FAQ
1.How can I place an order for TLE4923HALA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4923HALA1 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 TLE4923HALA1 reliable?
The price and inventory of TLE4923HALA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4923HALA1 is usually 5 days.
3.What payment methods are accepted for TLE4923HALA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4923HALA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4923HALA1?
TLE4923HALA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4923HALA1 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 TLE4923HALA1?
For technical support, including TLE4923HALA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4923HALA1 requirements.
6.How does Aetrix verify that TLE4923HALA1 is sourced from the original manufacturer or authorized distributors?
All TLE4923HALA1 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 TLE4923HALA1 meets industry standards.
7.What is the process for return or replacement of TLE4923HALA1?
All TLE4923HALA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4923HALA1, 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 TLE4923HALA1 part is unused and in its original packaging.
Return procedure for TLE4923HALA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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