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Home > Products > Sensors, Transducers > Position Sensors > Angle, Linear Position Measuring

Melexis Technologies NV MLX90423GDC-ACA-230-SP

Name: MLX90423GDC-ACA-230-SP
Brand: Melexis Technologies NV
SKU: MLX90423GDC-ACA-230-SP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MLX90423GDC-ACA-230-SP

Manufacturer:: Melexis Technologies NV

Category:: Angle, Linear Position Measuring

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: MLX90423GDC-ACA-230-SP.pdf

Description:: TRIAXIS POSITION PROCESSOR . SEN

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Product details

Overview

MLX90423GDC-ACA-230-SP from Melexis is a Triaxis® monolithic magnetic position sensor IC for absolute linear position sensing with stray field immunity up to 5 mT, programmable SENT output (SAE J2716 APR2016), ASIL-C functional safety compliance, and operation from −40°C to +160°C in SOIC-8 package.

For engineers reviewing the MLX90423GDC-ACA-230-SP datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, validated pin definitions, real-world automotive use cases, and confirmed alternative options for pedal, throttle, and ride height sensing systems.

Technical Context

The MLX90423GDC-ACA-230-SP integrates a Triaxis® Hall front end sensitive to Bx, By, and Bz magnetic components, enabling robust absolute linear position decoding without mechanical contact. Its on-chip DSP supports programmable 12–16 point linear transfer characteristics and configurable filtering for stray field rejection.

This variant implements SENT output per SAE J2716 APR2016 with Secure Sensor format encoding, delivering error codes and user-defined values. It achieves ASIL-C for SENT mode under ISO 26262 SEooC, with diagnostic time intervals of 20 ms (digital) and 10.64–12.4 ms (analog) depending on SENT configuration.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Temp	−40°C to +160°C - qualified for under-hood automotive environments including engine control and brake modules.
Supply Voltage	4.5 V to 5.5 V - supports regulated 5 V rail; battery mode (6–18 V) enabled only for PWM/SENT outputs.
Output Protocol	SENT (SAE J2716 APR2016) - provides secure serial frames with CRC, diagnostics, and user data fields.
Functional Safety	ASIL-C for SENT output - meets ISO 26262 requirements for safety-critical linear position feedback.
Magnetic Immunity	Stray field robust up to 5 mT - maintains accuracy in high-interference zones like near motors or solenoids.
Accuracy	±0.5° typical linearity error - enables high-fidelity pedal and throttle position reporting in closed-loop control.
Startup Time	≤6.26 ms to first valid SENT angle - ensures rapid system readiness after power-on in safety-critical subsystems.

Pinout & Package

MLX90423GDC-ACA-230-SP uses the SOIC-8 package (RoHS-compliant, 3.9 mm × 4.9 mm body, 1.27 mm pitch). Test and N.C. pins must be connected to PCB ground for optimal EMC performance.

Pin/Terminal	Circuit Role	Design Meaning
1 - VDD	Supply input	Primary 4.5–5.5 V power rail; supports battery mode (6–18 V) only in SENT/PWM modes.
2 - Test1	Factory test	Internally grounded in application mode; connect to PCB ground for EMC stability.
3 - Test2	Factory test	Internally grounded in application mode; connect to PCB ground for EMC stability.
4 - N.C.	No connection	Not bonded; must be tied to ground per Melexis EMC recommendation.
5 - OUT	SENT output	Push-pull digital output compliant with SAE J2716; drives external pull-up to Vext ≤ 18 V.
6 - N.C.	No connection	Not bonded; must be tied to ground per Melexis EMC recommendation.
7 - VDEC	Analog regulator decoupling	Requires 100 nF ceramic capacitor to ground for stable internal 3.3 V analog supply.
8 - VSS	Ground reference	Common return path for analog/digital domains; low-impedance grounding critical for noise immunity.

Key Features

Feature	Design Value
Triaxis® Hall Sensing	Simultaneous measurement of Bx, By, Bz enables true 3D magnetic field decoding for absolute linear position without shaft rotation constraints.
Programmable Transfer Curve	12–16 point user-defined linearization allows precise calibration to mechanical stroke profiles in throttle or pedal assemblies.
Stray Field Robustness	Validated immunity to 5 mT (4 kA/m) external fields per ISO 11452-8 - eliminates need for magnetic shielding in compact packaging.
Secure SENT Output	SAE J2716 APR2016-compliant frames include CRC, status flags, and user payload - supports diagnostic traceability in ASIL-C systems.
On-Chip Diagnostics	Programmable analog/digital diagnostic cycles (10.64–20 ms) with fail-safe state activation within 5–33 ms - meets ISO 26262 timing requirements.

Applications

Pedal Position Sensing	Throttle Position Sensing
Use Scenario: Monitoring accelerator or brake pedal displacement in electric/hybrid powertrains with high EMI exposure. IC Role / Device Role / Timing Role: Absolute linear position transducer providing SENT-encoded angle data at ≥1 kHz update rate with <6.3 ms startup latency. Use Value: Enables fast-response torque mapping while maintaining ASIL-C compliance and immunity to stray fields from nearby inverters.	Use Scenario: Closed-loop air intake control in turbocharged gasoline engines operating at 160°C ambient. IC Role / Device Role / Timing Role: High-temperature linear position sensor delivering ratiometric SENT frames with integrated diagnostics and 0.5° linearity. Use Value: Eliminates potentiometer wear and drift while supporting fail-operational behavior via programmable fault handling.
Ride Height Control	Steering Wheel Position
Use Scenario: Active suspension systems adjusting vehicle height based on road profile and load conditions. IC Role / Device Role / Timing Role: Stray-field-immune linear sensor mounted near suspension actuators, outputting SENT frames with user-defined payload for height calibration. Use Value: Maintains accuracy despite magnetic interference from adjacent solenoid valves and motor drivers without added shielding.	Use Scenario: Torque overlay and lane-centering assist requiring precise angular feedback across full 360° rotation. IC Role / Device Role / Timing Role: Absolute position encoder using Triaxis® technology to resolve shaft angle with ±0.5° linearity and SENT diagnostics. Use Value: Supports redundant angle tracking in ADAS architectures by enabling dual-die TSSOP-16 variants with isolation between dies.

Pedal Position Sensing

Throttle Position Sensing

Use Scenario: Monitoring accelerator or brake pedal displacement in electric/hybrid powertrains with high EMI exposure.

IC Role / Device Role / Timing Role: Absolute linear position transducer providing SENT-encoded angle data at ≥1 kHz update rate with <6.3 ms startup latency.

Use Value: Enables fast-response torque mapping while maintaining ASIL-C compliance and immunity to stray fields from nearby inverters.

Use Scenario: Closed-loop air intake control in turbocharged gasoline engines operating at 160°C ambient.

IC Role / Device Role / Timing Role: High-temperature linear position sensor delivering ratiometric SENT frames with integrated diagnostics and 0.5° linearity.

Use Value: Eliminates potentiometer wear and drift while supporting fail-operational behavior via programmable fault handling.

Ride Height Control

Steering Wheel Position

Use Scenario: Active suspension systems adjusting vehicle height based on road profile and load conditions.

IC Role / Device Role / Timing Role: Stray-field-immune linear sensor mounted near suspension actuators, outputting SENT frames with user-defined payload for height calibration.

Use Value: Maintains accuracy despite magnetic interference from adjacent solenoid valves and motor drivers without added shielding.

Use Scenario: Torque overlay and lane-centering assist requiring precise angular feedback across full 360° rotation.

IC Role / Device Role / Timing Role: Absolute position encoder using Triaxis® technology to resolve shaft angle with ±0.5° linearity and SENT diagnostics.

Use Value: Supports redundant angle tracking in ADAS architectures by enabling dual-die TSSOP-16 variants with isolation between dies.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MLX90422GDC-ACA-230-SP	Same SOIC-8 package and temperature grade, but PWM-only output (no SENT); ASIL-B rated.	Lacks SENT protocol support and ASIL-C certification - suitable only for non-safety-critical PWM interfaces.	Select when SENT communication and ASIL-C are not required, and cost optimization is prioritized over functional safety compliance.
TLV320ADC3101IRGER	Dual-channel 24-bit audio ADC with I²C interface - no magnetic sensing, no Triaxis® architecture, no automotive qualification.	Designed for audio signal chain digitization, not position transduction; lacks stray field immunity and AEC-Q100 Grade 0 rating.	Not functionally comparable; only relevant if redesigning from magnetic sensing to indirect position inference via auxiliary sensors.

Compared with MLX90423GDC-ACA-230-SP, MLX90422GDC-ACA-230-SP offers identical package and thermal performance but omits SENT and ASIL-C - making it viable only where safety-critical serial communication is unnecessary. The TLV320ADC3101IRGER is not a position sensor and cannot substitute for magnetic angle measurement.

Availability

MLX90423GDC-ACA-230-SP is available at Aetrix Electronics and suitable for automotive pedal position, throttle control, and ride height adjustment systems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100 Grade 0 reliability.

Supply support for MLX90423GDC-ACA-230-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 magnetic sensing, infrared thermometry, and automotive ICs, with design centers in Europe and Asia and global manufacturing partnerships.

The MLX90423 belongs to Melexis' Triaxis® position sensor product line, engineered specifically for high-reliability, non-contact absolute linear and rotary position sensing in automotive powertrain, chassis, and ADAS systems.

FAQ

What output protocol does the MLX90423GDC-ACA-230-SP support?

The MLX90423GDC-ACA-230-SP supports SENT (SAE J2716 APR2016) output exclusively in this variant, configured for Secure Sensor format with CRC, diagnostics, and user-defined payload fields. It does not support analog or PWM outputs unless reprogrammed - but factory programming fixes it to SENT mode per the ACA-230 option code.

Is the MLX90423GDC-ACA-230-SP qualified for automotive use?

Yes, the MLX90423GDC-ACA-230-SP is AEC-Q100 Grade 0 qualified (−40°C to +160°C) and certified to ASIL-C for SENT output per ISO 26262 SEooC. It also meets ISO 11452-8 for stray magnetic field immunity up to 5 mT, confirming suitability for under-hood and chassis applications.

What package type is used by the MLX90423GDC-ACA-230-SP?

The MLX90423GDC-ACA-230-SP uses the SOIC-8 package (3.9 mm × 4.9 mm, 1.27 mm pitch), as indicated by the "DC" package code in its ordering designation. This single-die configuration differs from the dual-die TSSOP-16 ("GO") and PCB-less SMP-3 ("VE") variants.

Does the MLX90423GDC-ACA-230-SP require external passive components?

Yes, the MLX90423GDC-ACA-230-SP requires a 100 nF ceramic capacitor between VDEC (Pin 7) and VSS (Pin 8) for stable internal analog regulation. No external resistors are needed for SENT output, as the IC uses push-pull drive - though an external pull-up to Vext ≤ 18 V is recommended for noise margin.

Can the MLX90423GDC-ACA-230-SP measure 360° rotary position?

No - the MLX90423GDC-ACA-230-SP is pre-programmed for linear stray field robust operation (option code "2" in ACA-230), optimized for absolute linear displacement. While the MLX90423 family supports 360° trough-shaft mode, this specific variant is not configured for it; that functionality requires ACA-231 or reprogramming via Melexis tools.

MLX90423GDC-ACA-230-SP Specifications

Product attributes: Attribute value

Manufacturer:: Melexis Technologies NV

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Series:: -

Packaging:: Bulk

Product Status:: Active

Programmable:: -

For Measuring:: Linear Position

Technology:: Hall Effect

Rotation Angle - Electrical, Mechanical:: -

Linear Range:: -

Output:: Analog, SENT

Output Signal:: Programmable

Actuator Type:: External Magnet, Not Included

Linearity:: ±1.5°

Resistance:: -

Resistance Tolerance:: -

Voltage - Supply:: 4.5V ~ 5.5V

Mounting Type:: Surface Mount

Termination Style:: SMD (SMT) Tab

Operating Temperature:: -40°C ~ 160°C

Grade:: -

Qualification:: -

Supplier Device Package:: 8-SOIC

MLX90423GDC-ACA-230-SP FAQ

1.How can I place an order for MLX90423GDC-ACA-230-SP through Aetrix?

Please submit a Request for Quotation (RFQ) for MLX90423GDC-ACA-230-SP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MLX90423GDC-ACA-230-SP reliable?

The price and inventory of MLX90423GDC-ACA-230-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90423GDC-ACA-230-SP is usually 5 days.

3.What payment methods are accepted for MLX90423GDC-ACA-230-SP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90423GDC-ACA-230-SP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MLX90423GDC-ACA-230-SP?

MLX90423GDC-ACA-230-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MLX90423GDC-ACA-230-SP order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MLX90423GDC-ACA-230-SP?

For technical support, including MLX90423GDC-ACA-230-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90423GDC-ACA-230-SP requirements.

6.How does Aetrix verify that MLX90423GDC-ACA-230-SP is sourced from the original manufacturer or authorized distributors?

All MLX90423GDC-ACA-230-SP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MLX90423GDC-ACA-230-SP meets industry standards.

7.What is the process for return or replacement of MLX90423GDC-ACA-230-SP?

All MLX90423GDC-ACA-230-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90423GDC-ACA-230-SP, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MLX90423GDC-ACA-230-SP part is unused and in its original packaging.

Return procedure for MLX90423GDC-ACA-230-SP:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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