Infineon Technologies TLE4984CHTE6747HAMA1

Overview

TLE4984CHTE6747HAMA1 from Infineon Technologies is a programmable mono-cell chopped Hall sensor for automotive camshaft position sensing, featuring true power-on (TPO) functionality, ±0.5° magnetic switching point accuracy over -40°C to 150°C, 47 nF and 4.7 nF integrated decoupling capacitors, and twist-independent mounting (TIM) in PG-SSO-3 package. It delivers digital open-drain output synchronized to gear tooth/notch transitions in engine timing systems.

For engineers reviewing the TLE4984CHTE6747HAMA1 datasheet, TLE4984CHTE6747HAMA1 pinout, TLE4984CHTE6747HAMA1 application, or TLE4984CHTE6747HAMA1 equivalent, key selection criteria include magnetic switching point programmability, self-calibration capability for asymmetrical target wheels, integrated EMC capacitors, TIM mechanical tolerance support, and automotive AEC-Q100 qualification.

Technical Context

The TLE4984CHTE6747HAMA1 implements a dynamic self-calibrating chopped-Hall architecture with offset correction during normal operation, enabling stable switching across symmetrical and asymmetrical encoder wheels. Its digital signal processing unit includes PGA, ADC, DAC, and hysteresis control logic, all on a single die.

It uses a PLL-based oscillator and gain-controlled Hall plate with post-fabrication electrical trimming of magnetic thresholds and temperature coefficients. The device supports NdFeB back-bias magnet configurations by default and provides short-circuit protection plus enhanced ESD robustness per AEC-Q100.

Key Specifications

Pinout & Package

PG-SSO-3 (Plastic Small Outline, 3-pin, surface-mount) package with integrated capacitors and exposed thermal pad. Dimensions: 3.0 mm × 2.5 mm × 0.9 mm (L × W × H), pitch 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MLX92292ESE-AAA-000-RE and TLE4961-3M, the TLE4984CHTE6747HAMA1 uniquely combines true power-on response, on-the-fly self-calibration, and programmable thresholds - making it the only option for high-accuracy, production-tolerant cam sensing in modern VVT and start-stop systems.

Availability

TLE4984CHTE6747HAMA1 is available at Aetrix Electronics and suitable for engine control units (ECUs), variable valve timing modules, start-stop system controllers, and transmission control units requiring stable component supply across automotive production lifecycles.

Supply support for TLE4984CHTE6747HAMA1 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 ICs, and sensor solutions, with global R&D and manufacturing infrastructure.

The TLE4984C belongs to Infineon's magnetic sensor product line, engineered specifically for high-reliability rotational position sensing in harsh automotive environments - emphasizing accuracy, thermal stability, and mechanical tolerance.

FAQ

What is the purpose of the two integrated capacitors in the TLE4984CHTE6747HAMA1?

The 47 nF capacitor between V_S and GND stabilizes the main supply rail against micro-breaks and load-dump transients, while the 4.7 nF capacitor between V_Q and GND filters high-frequency noise on the open-drain output. Both are laser-trimmed on-die and eliminate external components required for AEC-Q100-compliant EMC performance.

How does True Power-On (TPO) differ from standard Hall sensor startup behavior?

TPO guarantees a valid, edge-aligned digital output within 10 µs of V_S reaching 4.5 V - no internal initialization or wake-up delay. Standard Hall sensors typically require 1–10 ms to stabilize bias and settle offsets, causing missed edges during cranking. TLE4984CHTE6747HAMA1 avoids this via dedicated startup circuitry and pre-trimmed thresholds.

Can the TLE4984CHTE6747HAMA1 be used with ferrite magnets instead of NdFeB?

Yes, but requires reprogramming of magnetic switching points and temperature coefficients using Infineon's TLE4984C programming tool and external pulse generator. The default configuration targets NdFeB back-bias magnets; ferrite use increases required air gap and necessitates field validation due to lower flux density and higher tempco.

Does the self-calibration function operate continuously or only at power-up?

The self-calibration runs continuously during normal rotation - detecting and correcting offset drift caused by temperature gradients, mechanical stress, or aging. It activates automatically when valid wheel transitions are detected and does not require host intervention, diagnostic mode, or special timing windows.