Melexis Technologies NV MLX90372GDC-ACC-200-RE

Overview

MLX90372GDC-ACC-200-RE from Melexis is a monolithic Triaxis® Hall-based absolute position processor IC in SOIC-8 package, designed for linear position sensing with stray-field immunity. It delivers SENT or PWM output, operates from -40°C to +160°C, supports programmable piecewise-linear transfer characteristics (up to 32 points), and meets AEC-Q100 Grade 0 and ISO 26262 ASIL-C as a safety element out of context. It is used in automotive pedal and throttle position sensing where magnetic robustness is critical.

For engineers reviewing the MLX90372GDC-ACC-200-RE datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, SOIC-8 pin mapping, linear stray-field immune mode configuration (-200 option code), SENT/PWM timing compliance per SAE J2716 APR2016, and real-world design implications for EMC-hardened non-contact sensing.

Technical Context

The MLX90372GDC-ACC-200-RE implements a Triaxis® Hall front end sensitive to B_x, B_y, and B_z magnetic components, enabling absolute linear displacement measurement without mechanical contact. Its on-chip DSP performs real-time angle/position decoding using configurable PWL interpolation (16 or 32 points) and includes dual watchdogs (IWD/AWD) with 20 ms timeout.

It operates in Linear Stray-field Immune Mode (-200 option code), featuring enhanced rejection of external magnetic interference while maintaining ±0.3° typical angular accuracy over temperature. The device uses a 24 MHz main clock (±5% tolerance including thermal drift) and supports SENT 3 µs tick mode with built-in CRC and diagnostic message fields.

Key Specifications

Pinout & Package

SOIC-8 package (RoHS-compliant, 1.27 mm pitch, body size 4.9 × 3.9 mm). Pin 4 (N.C.) and Pins 2/3 (Input/Test) are internally grounded in application; unused pins must be connected to PCB ground for optimal EMC performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MLX90372GDC-ACC-200-RE, the ACE-200 variant provides identical linear stray-field immune functionality with enhanced reliability and support, while the MLX90363 offers basic PWM-only operation without safety or communication features - making it unsuitable for ASIL-B/C systems or modern SENT-based architectures.

Availability

MLX90372GDC-ACC-200-RE is available at Aetrix Electronics and suitable for automotive pedal position sensing, throttle control systems, and ride height adjustment requiring stable component supply across extended temperature ranges and high-reliability magnetic environments.

Supply support for MLX90372GDC-ACC-200-RE 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

Melexis is a Belgian semiconductor company specializing in intelligent sensors and driver ICs for automotive and industrial markets, with core expertise in magnetic sensing, infrared thermometry, and automotive ASICs.

The MLX90372 belongs to Melexis' Triaxis® position processor product line, engineered specifically for robust, non-contact absolute position measurement in harsh automotive environments where stray magnetic fields, temperature extremes, and functional safety are critical design constraints.

FAQ

What is the key functional difference between MLX90372GDC-ACC-200-RE and MLX90372GDC-ACE-200-RE?

The MLX90372GDC-ACC-200-RE uses the ACC chip revision, which Melexis explicitly states is "not recommended for new designs" in its ordering information table. The ACE revision (e.g., MLX90372GDC-ACE-200-RE) provides updated firmware, enhanced diagnostic coverage, and full lifecycle support. Both share identical SOIC-8 packaging, Linear Stray-field Immune Mode (-200), and electrical specifications - but ACE is the current standard for production.

Does MLX90372GDC-ACC-200-RE support SENT output in Fast mode (1.5 µs tick)?

No. MLX90372GDC-ACC-200-RE is configured for Normal SENT mode with 3 µs tick timing, as defined by its ACC-200 option code and SOIC-8 package implementation. Fast SENT (1.5 µs) is only supported in specific DMP-4 configurations with Pinout-B and ADE revisions - not applicable to this SOIC-8 ACC variant.

Can MLX90372GDC-ACC-200-RE be used in rotary position applications?

While the MLX90372 architecture supports both rotary and linear modes, the ACC-200 option code specifically configures MLX90372GDC-ACC-200-RE for Linear Stray-field Immune Mode per Melexis' ordering table. Using it for rotary applications would require reprogramming and validation - and the ACC revision lacks the latest calibration tools and safety documentation required for certified rotary deployments.

What is the purpose of Pin 7 (VDEC) on MLX90372GDC-ACC-200-RE?

Pin 7 (VDEC) is the output of the internal 3.3 V analog regulator, supplying clean power to the Hall front end and ADC. It requires a dedicated 100 nF ceramic decoupling capacitor connected directly to Pin 6 (VSS, digital ground) - not to Pin 8 (analog ground) - as specified in section 15.1 of the datasheet to maintain signal integrity and noise immunity.

Is MLX90372GDC-ACC-200-RE pin-compatible with earlier Triaxis® devices in SOIC-8?

Yes - MLX90372GDC-ACC-200-RE maintains the same SOIC-8 pinout as prior-generation Triaxis® position sensors (e.g., MLX90363), including VDD, OUT, VSS, and VDEC placement. However, internal functionality (e.g., SENT protocol, ASIL-C mechanisms, PWL programming) is not backward-compatible without firmware and system-level validation.