Melexis Technologies NV MLX90374GVS-ABC-100-RX

Overview

MLX90374GVS-ABC-100-RX from Melexis is a monolithic Triaxis® Hall-based magnetic position processor IC for absolute rotary position sensing with stray-field immunity, operating from -40°C to +160°C, delivering dual PWM or SENT + programmable switch outputs, and certified to ISO 26262 ASIL-C as a safety element out of context (SEooC) - used in automotive throttle and steering wheel position sensing.

For engineers reviewing the MLX90374GVS-ABC-100-RX datasheet, pinout, applications, or equivalent options, key selection considerations include its DMP-4 package configuration, angular stray-field immune mode (-100 option code), SENT v4.0 compliance per SAE J2716 APR2016, and programmable piecewise linear transfer characteristic up to 32 points.

Technical Context

The MLX90374GVS-ABC-100-RX integrates a Triaxis® Hall front end sensitive to B_x, B_y, and B_z magnetic field components, enabling robust absolute angle decoding from 0° to 360° without mechanical contact. Its on-chip DSP supports FIR filtering (FIR11/FIR1111), configurable diagnostics cycle time (DCT_DIG = 20 ms), and dual-output redundancy management.

This variant implements Angular Rotary Strayfield Immune mode (option code -100), featuring enhanced magnetic immunity via optimized internal IMC geometry and calibrated offset compensation. It operates in continuous asynchronous acquisition mode (T_angleMeas = 528–588 µs) and supports SENT synchronous frame modes with T_FRAME = 310–320 ticks at 3 µs tick time.

Key Specifications

Pinout & Package

DMP-4 package: PCB-less dual-mold construction with 4 terminals, designed for direct soldering onto flexible or rigid substrates without carrier PCB; dimensions conform to STD1 1.27 mm lead pitch (POD per section 17.5).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MLX90374GVS-ABC-100-RX, the MLX90375GVS-ABC-100-RX adds SPI configurability at higher BOM cost and complexity, while the AMS AS5055A-BQFT lacks integrated safety mechanisms and automotive qualification - making MLX90374GVS-ABC-100-RX the optimal choice for ASIL-C-compliant, drop-in-ready angular position sensing in DMP-4 footprint-constrained applications.

Availability

MLX90374GVS-ABC-100-RX is available at Aetrix Electronics and suitable for automotive throttle position sensing, steering angle feedback, and ride height control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MLX90374GVS-ABC-100-RX 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 wireless RF solutions for automotive and industrial markets, with core expertise in magnetic sensing and embedded signal processing.

The MLX90374 product line delivers Triaxis® Hall-based position processors targeting ASIL-C functional safety requirements in powertrain and chassis systems, emphasizing stray-field immunity, dual-output redundancy, and automotive-grade reliability.

FAQ

What is the primary magnetic sensing architecture used in the MLX90374GVS-ABC-100-RX?

The MLX90374GVS-ABC-100-RX uses Melexis' proprietary Triaxis® Hall technology, which integrates three orthogonal Hall plates to simultaneously measure B_x, B_y, and B_z components. This enables true 3D magnetic field vector resolution - essential for accurate absolute angle calculation in rotary applications without mechanical contact or external concentrators. The -100 option code configures the IC specifically for angular stray-field immune operation.

Does the MLX90374GVS-ABC-100-RX support both PWM and SENT outputs simultaneously?

No, the MLX90374GVS-ABC-100-RX supports either dual PWM outputs or a SENT + programmable switch configuration - not simultaneous PWM and SENT on the same device. Output mode is selected during programming via the WARM_ACT_HIGH parameter and stored in NVRAM. OUT1 and OUT2 can be independently assigned within the chosen protocol family (e.g., two SENT channels or one SENT + one switch), but cross-protocol mixing is not supported in hardware.

What does the "-100" in MLX90374GVS-ABC-100-RX signify?

The "-100" suffix denotes the application-specific configuration code indicating Angular Rotary Strayfield Immune mode. This mode activates calibrated internal IMC geometry, differential signal paths, and offset compensation algorithms optimized to reject orthogonal magnetic interference up to ±1 T - critical for placement near high-current actuators in automotive powertrain and chassis systems. It is distinct from -200 (linear) and -300 (legacy) configurations.

Is the MLX90374GVS-ABC-100-RX pin-compatible with other MLX90374 variants in DMP-4 package?

Yes, all MLX90374 variants in DMP-4 package (VS code) share identical 4-pin pinout: OUT1, VSS, VDD, OUT2 - regardless of option code (-100, -200, -300) or revision (ABC vs ABB). Mechanical and electrical compatibility is maintained across the DMP-4 family, enabling design reuse and simplified inventory management for manufacturers qualifying multiple configurations.

How is functional safety implemented in the MLX90374GVS-ABC-100-RX?

The MLX90374GVS-ABC-100-RX implements ISO 26262 ASIL-C as a Safety Element out of Context (SEooC), including dual watchdogs (IWD/AWD), memory ECC for NVRAM and RAM, cyclic redundancy checks on SENT frames, and fail-safe state activation within 9.8–34.6 ms of detected faults. Diagnostic coverage is documented in the Melexis Safety Manual (document ID MLX90374-SM), and the ABC revision adds enhanced safe startup sequencing (TSafeStup = 11.2–12.4 ms).