Infineon Technologies TLE4953CBAMA1

Overview

TLE4953CBAMA1 from Infineon Technologies is a differential Hall effect transmission speed sensor with integrated 1.8 nF overmolded capacitor, designed for automotive ABS and transmission systems. It delivers rotation speed (0–12 kHz) and direction via two-wire PWM current interface, features adaptive hysteresis, dynamic self-calibration, and operates across –40 °C to +150 °C without external components.

For engineers reviewing the TLE4953CBAMA1 datasheet, TLE4953CBAMA1 pinout, TLE4953CBAMA1 application, or TLE4953CBAMA1 equivalent, this page provides verified functional context, validated pin roles, confirmed automotive-grade specifications, and real-world use cases in wheel speed sensing and gear tooth detection under vibration and EMI stress.

Technical Context

The TLE4953CBAMA1 implements a monolithic BiCMOS architecture integrating dual Hall plates, analog front-end amplification, slope/peak detection, digital filtering, and a direction algorithm that interprets pulse-length modulation (DR-L/DR-R) from magnetic rising edges. Its self-calibration requires only two transitions and cancels ±20 mT magnetic offsets.

It uses an adaptive threshold triggered on magnetic rising edges, generates output pulses synchronized to target wheel motion, and embeds vibration suppression logic in calibrated mode. The overmolded 1.8 nF X8R ceramic capacitor (50 V rating, ±10% tolerance) is integrated between VDD and GND to enhance conducted EMI immunity per ISO 11452-4.

Key Specifications

Pinout & Package

Package: PG-SSO-2-4 - plastic single small-outline package with gull-wing leads, optimized for automated SMT placement and under-hood thermal cycling reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential Hall speed and direction sensing applications.

Compared with TLE4953CBAMA1, the TLE4953C requires external capacitor integration and increases BOM count, while TLV4953C sacrifices temperature range and direction fidelity-making the CBAMA1 variant optimal for under-hood transmission and ABS deployments demanding full spec compliance.

Availability

TLE4953CBAMA1 is available at Aetrix Electronics and suitable for automotive ABS systems, automatic transmission control units, electric power steering modules, and driveline torque estimation circuits requiring stable component supply across extended temperature and EMI environments.

Supply support for TLE4953CBAMA1 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 TLE4953x family belongs to Infineon's automotive Hall sensor product line, engineered specifically for high-reliability rotational sensing in safety-critical drivetrain and braking systems under AEC-Q100 qualification.

FAQ

What is the function of the integrated 1.8 nF capacitor in TLE4953CBAMA1?

The 1.8 nF X8R ceramic capacitor is overmolded directly between VDD and GND inside the PG-SSO-2-4 package. It provides high-frequency bypassing to suppress conducted EMI from the PWM current interface, eliminating the need for external decoupling and improving EMC test margin per ISO 11452-4 without PCB layout dependency.

How does the TLE4953CBAMA1 detect rotation direction?

It encodes direction into output pulse length: DR-L (direction left) shortens the pulse width when the target moves from VDD toward GND side; DR-R (direction right) extends it when moving opposite. This is derived from phase analysis of differential Hall signals and validated at frequencies ≥1 kHz per the datasheet's direction protocol specification.

Is TLE4953CBAMA1 compatible with coarse-pitch target wheels?

Yes-it is explicitly designed for coarse transmission target wheels (e.g., 12–32 teeth), with guaranteed operation down to 0 Hz and up to 12 kHz. Its large air-gap capability (>2 mm with standard magnets) and high sensitivity enable reliable signal capture even with wide tooth/space ratios and mechanical tolerances typical in gearbox applications.

Does TLE4953CBAMA1 require external calibration or configuration?

No-its dynamic self-calibration runs automatically at power-up using only two magnetic transitions, compensating for ±20 mT magnetic offset and mechanical misalignment. No external programming, EEPROM, or factory calibration is needed, making it a true "fit-and-forget" sensor for high-volume automotive assembly.