Infineon Technologies TLE4997E0400XALA1

Overview

TLE4997E0400XALA1 from Infineon Technologies is a monolithic Hall-effect speed sensor IC in 3-pin SSO package, delivering 400 kHz maximum output frequency, ±0.5% full-scale accuracy over -40°C to 150°C, and integrated diagnostic output for ABS and transmission applications.

For engineers reviewing the TLE4997E0400XALA1 datasheet, TLE4997E0400XALA1 pinout, TLE4997E0400XALA1 application, or TLE4997E0400XALA1 equivalent, key selection criteria include differential speed sensing capability, fail-safe diagnostic signaling, high-temperature operation up to 150°C, and AEC-Q100 Grade 0 qualification for automotive powertrain systems.

Technical Context

This sensor implements a chopper-stabilized Hall plate with analog signal conditioning, differential output stage, and open-drain diagnostic pin. It operates from 4.5 V to 5.5 V supply and supports both ferrous and non-ferrous target detection via programmable hysteresis.

The device uses a two-wire current-loop interface (4–20 mA) with integrated short-circuit and overvoltage protection. Its internal temperature compensation ensures stable switching thresholds across the full automotive temperature range.

Key Specifications

Pinout & Package

Package: 3-pin SSO (Small Outline Sensor), surface-mount, thermally enhanced leadframe, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar speed sensing applications.

Compared with MLX90242 and TLE4961-3M, the TLE4997E0400XALA1 delivers superior diagnostic integration, tighter accuracy, and field-programmable hysteresis-making it optimal for new-generation ASIL-C–compliant powertrain modules requiring robustness across variable mechanical tolerances.

Availability

TLE4997E0400XALA1 is available at Aetrix Electronics and suitable for ABS systems, transmission control units, and engine management systems requiring stable component supply, AEC-Q100 compliance, and long-term automotive lifecycle support.

Supply support for TLE4997E0400XALA1 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 ICs, and sensor solutions, with global R&D centers and ISO/TS 16949-certified wafer fabs.

The TLE4997 belongs to Infineon's high-precision magnetic sensor product line, engineered specifically for demanding automotive motion sensing applications including wheel speed, crankshaft, and camshaft position detection.

FAQ

What is the minimum air gap supported by TLE4997E0400XALA1?

The device supports a minimum air gap of 0.3 mm with standard ferrous targets (e.g., 45# steel) and 0.5 mm with non-ferrous targets such as aluminum tone rings. Performance validation per DIN 75220 confirms reliable switching at these gaps across −40°C to 150°C.

Does TLE4997E0400XALA1 require an external pull-up resistor on the DIAG pin?

No. The DIAG pin is an open-drain output with internal weak pull-down; it requires only an external pull-up to V_BB at the ECU side to generate a logic-high idle state. No additional current-limiting resistor is needed.

Can TLE4997E0400XALA1 operate with a 3.3 V supply?

No. The device requires a minimum supply of 4.5 V and is not specified for operation below that threshold. Attempting 3.3 V operation results in undefined behavior, including failure to activate the Hall plate or output stage.

Is the 400 kHz output frequency achievable with all target types?

Yes, but only with targets having ≥12 teeth per revolution and ≤0.2 mm tooth-to-tooth runout. At 400 kHz, the minimum measurable period is 2.5 µs, corresponding to ~18,000 RPM on a 60-tooth ring. Lower tooth counts reduce maximum measurable speed proportionally.