Infineon Technologies TLE4997E2XALA1

Overview

TLE4997E2XALA1 from Infineon Technologies is a programmable linear Hall-effect sensor IC with 20-bit digital signal processing, rail-to-rail push-pull output, and EEPROM-stored calibration parameters for magnetic range (±50/±100/±200 mT), gain, offset, bandwidth, and polarity. It operates from −40 °C to +150 °C at 4.5–5.5 V supply and delivers 12-bit effective resolution in automotive position sensing applications such as throttle and pedal position.

For engineers reviewing the TLE4997E2XALA1 datasheet, TLE4997E2XALA1 pinout, TLE4997E2XALA1 application, or TLE4997E2XALA1 equivalent, key selection criteria include its programmable magnetic transfer function, on-chip temperature compensation, diagnostic features (wire break, undervoltage, overvoltage), and PG-SSO-3-10 package compatibility with high-vibration environments.

Technical Context

The TLE4997E2XALA1 integrates a Hall plate, analog front-end, 20-bit sigma-delta ADC, digital signal processor with configurable low-pass filtering, and EEPROM-based calibration memory. Its transfer function supports two-point magnetic calibration without iteration, enabling precise linearization across temperature and lifetime drift.

DSP firmware implements digital temperature compensation using stored coefficients for common magnet types (e.g., NdFeB, SmCo, Ferrite), while clamping, gain, offset, and polarity are fully reprogrammable until memory lock. The device uses ratiometric operation with <±0.1% ratiometry error over supply and temperature.

Key Specifications

Pinout & Package

Package: PG-SSO-3-10 - green, lead-free, slim 3-pin single small-outline package with exposed pad (AEP) for thermal conduction and mechanical stability in high-vibration mounting.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable linear Hall sensor applications.

Compared with MLX90393 and TLE4998C3, the TLE4997E2XALA1 uniquely combines field-programmable analog output, EEPROM-based multi-parameter calibration, and ASIL-ready diagnostics in a 3-pin package-enabling design reuse across diverse magnetic geometries without hardware change.

Availability

TLE4997E2XALA1 is available at Aetrix Electronics and suitable for automotive pedal position sensing, throttle valve monitoring, and steering angle detection requiring stable component supply, long-term lifecycle support, and AEC-Q100 Grade 0 qualification.

Supply support for TLE4997E2XALA1 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 TLE4997E2XALA1 belongs to Infineon's TLE499x programmable Hall sensor family, designed specifically for high-reliability automotive position and current sensing where mechanical wear, environmental stress, and functional safety are critical constraints.

FAQ

What programming interface does TLE4997E2XALA1 use?

The TLE4997E2XALA1 uses a proprietary single-wire pulse-width modulation (PWM) interface shared between VDD and OUT pins. No dedicated programming pin or external protocol controller is needed-calibration is performed using standard 5 V logic-level pulses per Infineon's PAK protocol, supported by the TLE499x Lab Programmer (PG-SSO-3 adapter).

Does TLE4997E2XALA1 require external components for basic operation?

No external components are required for nominal operation: the device integrates reverse-polarity protection, output short-circuit protection, and ESD clamps. A 100 nF ceramic decoupling capacitor between VDD and GND is recommended within 5 mm of the package, and the exposed pad (AEP) must be soldered to a thermal ground plane.

How is temperature compensation implemented in TLE4997E2XALA1?

Temperature compensation uses pre-characterized coefficients stored in EEPROM for six magnet types (NdFeB, SmCo, AlNiCo, Ferrite, flexible rubber, and custom). During operation, the internal temperature sensor reads die temperature and applies linear correction to gain and offset in real time, reducing full-scale error to <±0.5% across −40 °C to +150 °C.

Can TLE4997E2XALA1 be used in safety-critical ASIL-B systems?

Yes-the device includes diagnostic features required for ASIL-B: continuous wire-break detection on VDD and OUT, undervoltage/overvoltage monitoring, EEPROM integrity checking with SEC, and fail-safe output behavior (clamped low or high on fault). Full FMEDA reports and safety manuals are provided by Infineon under NDA for certified system integration.