Melexis Technologies NV MLX90371GVS-BCC-151-SP

Overview

MLX90371GVS-BCC-151-SP from Melexis is a Triaxis® monolithic position processor IC that senses all three magnetic field components (BX, BY, BZ) to deliver absolute rotary position output with 12-bit resolution, ±1° angular accuracy, and stray-field immunity in rotary configurations. It operates from -40°C to +160°C, supports programmable ratiometric analog or PWM output, and is qualified to ISO 26262 ASIL-B as a safety element out of context for automotive pedal and throttle sensing.

For engineers reviewing the MLX90371GVS-BCC-151-SP datasheet, pinout, applications, or equivalent options, this device delivers certified functional safety, field-programmable transfer characteristics (up to 32-segment piecewise-linear), and DMP-4 package compatibility with STD1 2.54 mm lead form for direct PCB mounting without carrier substrate.

Technical Context

The MLX90371GVS-BCC-151-SP implements on-chip DSP-based signal processing to decode absolute angular position from triaxial Hall sensor data, using integrated IMC structures and configurable FIR filtering. Its architecture includes dual 12-bit DACs for analog and PWM outputs, NVRAM for user-programmable calibration and diagnostics, and temperature-compensated gain control.

This variant uses the DMP-4 package with Trim-and-Form STD1 2.54 mm leads and is configured for Rotary Stray-Field Immune Mode – Low-Field Variant (BCC-151), requiring ≤25 mT in-plane flux and ≥100 mT axial flux. It supports 150–2000 Hz PWM frequency with ±5% tolerance and 440–462 μs latency under standard filtering.

Key Specifications

Pinout & Package

DMP-4 package: Dual Mold Package, PCB-less, 4-terminal surface-mount device with STD1 2.54 mm lead pitch and built-in decoupling capacitance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MLX90371GVS-BCC-151-SP, the BCC-101 variant trades low-field operation for broader magnetic headroom, while the MLX90372 offers measurable resolution and thermal performance gains without layout changes-making it the preferred upgrade path for next-gen automotive platforms.

Availability

MLX90371GVS-BCC-151-SP is available at Aetrix Electronics and suitable for automotive pedal position sensing, throttle control systems, and steering angle feedback requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MLX90371GVS-BCC-151-SP 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 ASIC design.

The MLX90371 product line delivers Triaxis®-based absolute position sensing for safety-critical automotive applications, designed specifically to replace contact-based potentiometers with robust, programmable, and ASIL-certifiable alternatives.

FAQ

What is the magnetic field requirement for MLX90371GVS-BCC-151-SP in Rotary Stray-Field Immune Mode?

The MLX90371GVS-BCC-151-SP requires ≤25 mT in-plane magnetic flux (BX/BY) and ≥100 mT axial flux (BZ) for optimal performance in its specified Rotary Stray-Field Immune – Low-Field Variant configuration. This enables use with small, low-cost magnets in tight air-gap assemblies typical of pedal and throttle mechanisms. Field validation must follow Melexis Application Note AN-102 for BCC-151 mode.

Does MLX90371GVS-BCC-151-SP support both analog and PWM output simultaneously?

No, the MLX90371GVS-BCC-151-SP supports either ratiometric analog output or PWM output-not both concurrently. Output mode is selected during programming via the NVRAM USEROPTION_OUTMODE parameter. The analog output provides 0.5–97.5% VDD swing with 12-bit resolution, while PWM offers 150–2000 Hz frequency and 0.5–98% duty cycle range.

What is the purpose of the two VSS pins on the DMP-4 package of MLX90371GVS-BCC-151-SP?

The MLX90371GVS-BCC-151-SP DMP-4 package has two dedicated VSS pins (pins 1 and 4) to provide separate low-impedance return paths for analog and digital ground currents, minimizing coupling noise between sensor front-end and output stage. Both pins must be connected directly to the PCB ground plane with short, wide traces to maintain ±1° angular accuracy and meet EMC requirements per CISPR 25 Class 5.

How is functional safety implemented in MLX90371GVS-BCC-151-SP for ASIL-B compliance?

The MLX90371GVS-BCC-151-SP achieves ASIL-B as a Safety Element out of Context (SEooC) through integrated diagnostics including memory ECC, ADC self-test, clock monitoring, temperature-sensing-based gain validation, and dual-output clamping. These features are documented in the MLX90371 Safety Manual (Rev. 003) and enable system-level FMEDA without external safety monitors when used per defined assumptions of use.

Can MLX90371GVS-BCC-151-SP be reprogrammed in-system after soldering?

Yes, the MLX90371GVS-BCC-151-SP supports in-system programming via the TEST pin using Melexis' PTM (Programmer Tool Module) and compatible host controllers. All end-user programmable items-including transfer characteristic, output mode, diagnostics, and clamping levels-can be updated post-assembly. Reprogramming requires 4.5–5.5 V supply and follows the protocol defined in Section 13 of the datasheet Rev. 004.