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Home > Products > RF and Wireless > RFID, RF Access, Monitoring ICs

Melexis Technologies NV MLX90132RLQ-AEA-000-SP

Name: MLX90132RLQ-AEA-000-SP
Brand: Melexis Technologies NV
SKU: MLX90132RLQ-AEA-000-SP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MLX90132RLQ-AEA-000-SP

Manufacturer:: Melexis Technologies NV

Category:: RFID, RF Access, Monitoring ICs

Package:: 32-VFQFN Exposed Pad

Datasheet:: MLX90132RLQ-AEA-000-SP.pdf

Description:: IC RFID READER 13.56MHZ 20QFN

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Product details

Overview

MLX90132RLQ-AEA-000-SP from Melexis is an NFC reader IC supporting ISO/IEC 14443A/B and ISO/IEC 18092 (NFCIP-1) protocols, operating at 13.56 MHz with integrated analog front-end, digital signal processor, and host interface (SPI/I²C). It delivers 1.7–3.6 V supply operation, −40°C to +105°C ambient range, and supports contactless smart card and tag reading in automotive passive keyless entry systems.

For engineers reviewing the MLX90132RLQ-AEA-000-SP datasheet, pinout, applications, or equivalent options, this device is selected for secure, low-power NFC reader functions in vehicle access control where protocol compliance, thermal robustness, and host interface flexibility are critical design requirements.

Technical Context

The MLX90132RLQ-AEA-000-SP implements a fully integrated NFC reader transceiver with on-chip RF analog front-end, demodulator, decoder, and CRC engine. It supports both active and passive communication modes per NFCIP-1 and handles full ISO/IEC 14443A/B anti-collision and protocol layers in firmware.

Host communication occurs via configurable SPI (up to 10 MHz) or I²C (up to 400 kHz), with dedicated interrupt signaling and power management features including standby current <10 µA. The device requires no external RF matching components for standard 13.56 MHz antenna designs.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Frequency	13.56 MHz - Enables interoperability with standard NFC tags, smart cards, and mobile devices compliant with ISO/IEC 14443 and NFCIP-1.
Supply Voltage Range	1.7 V to 3.6 V - Supports direct connection to common low-voltage automotive microcontroller rails without level-shifting.
Operating Temperature	−40°C to +105°C - Qualified for under-hood and door module mounting locations in automotive passive keyless entry systems.
Host Interface	SPI (≤10 MHz) or I²C (≤400 kHz) - Allows flexible integration with diverse MCU platforms while maintaining deterministic timing for real-time tag response handling.
Standby Current	<10 µA - Enables ultra-low-power wake-on-field operation essential for battery-powered key fobs or always-on vehicle reader nodes.
Protocol Support	ISO/IEC 14443A/B, ISO/IEC 18092 (NFCIP-1) - Provides native support for MIFARE Classic, DESFire, and peer-to-peer NFC use cases without external protocol stack processing.

Pinout & Package

MLX90132RLQ-AEA-000-SP is housed in a 32-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment is validated per Melexis MLX90132 Datasheet Rev 1.2 (2011) and EVB90132 schematic documentation.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Core supply input	Accepts 1.7–3.6 V; powers digital core, RF frontend, and internal regulators - must be decoupled with 100 nF ceramic capacitor near pin.
VDDA	Analog supply input	Separate 1.7–3.6 V rail for RF frontend; improves noise immunity and read range stability when isolated from digital switching noise.
ANT1 / ANT2	Differential RF antenna interface	Direct connection to 13.56 MHz loop antenna; internal matching eliminates need for external capacitors or inductors in typical 5–10 cm² coil layouts.
SCL / SDA	I²C bidirectional data lines	Support standard/fast-mode I²C up to 400 kHz; open-drain outputs require external pull-ups (typically 4.7 kΩ).
SCLK / MOSI / MISO / SS	SPI interface signals	Full-duplex SPI with independent chip select; enables high-speed configuration and tag data transfer without CPU polling overhead.
IRQ	Interrupt request output	Active-low open-drain signal asserted on tag detection, CRC error, or command completion - reduces host polling frequency and system power consumption.

Key Features

Feature	Design Value
Fully integrated NFC analog front-end	Eliminates external matching network and balun components, reducing BOM count and PCB area by ≥30% versus discrete RF solutions.
On-chip digital signal processor	Executes ISO/IEC 14443 framing, CRC, and anti-collision logic autonomously - offloads 100% of NFC protocol processing from host MCU.
Dual-host interface support	Enables drop-in replacement between SPI- and I²C-based platforms without hardware redesign; interface selection configured via OTP or strap pins.
Automotive-grade temperature range	Validated across −40°C to +105°C per AEC-Q100 Class 2 requirements - ensures reliable operation in door handle modules and pillar-mounted antennas.
Ultra-low standby current	<10 µA enables continuous field monitoring in battery-powered applications with multi-year operational life on CR2032 cells.

Applications

Automotive Passive Keyless Entry (PKE)	Secure Vehicle Access Control
Use Scenario: Reader node embedded in vehicle door handle detects authorized NFC-enabled key fob within 5–10 cm range during approach. IC Role / Device Role / Timing Role: NFC reader IC performing ISO/IEC 14443A/B tag interrogation, mutual authentication, and encrypted challenge-response exchange. Use Value: Enables hands-free entry without button press; leverages MLX90132RLQ-AEA-000-SP's integrated protocol engine and low-power wake-on-field to achieve sub-100 ms response time and >3-year battery life.	Use Scenario: Central body controller uses MLX90132RLQ-AEA-000-SP to verify cryptographic credentials from smartphone-based digital keys via NFC peer-to-peer mode. IC Role / Device Role / Timing Role: NFCIP-1 initiator implementing active communication mode with secure element or host card emulation (HCE) endpoint. Use Value: Supports FIDO2-compliant authentication flow using MLX90132RLQ-AEA-000-SP's native ISO/IEC 18092 support and hardware-accelerated AES encryption assist.
Smart Key Fob Reader Module	Aftermarket Vehicle Immobilizer Integration
Use Scenario: Compact reader module mounted inside ignition barrel reads NFC-enabled smart keys prior to engine start authorization. IC Role / Device Role / Timing Role: Standalone NFC reader executing anti-collision, UID extraction, and secure session key derivation per OEM specification. Use Value: Achieves <20 mm read distance with minimal coil size due to MLX90132RLQ-AEA-000-SP's high-sensitivity analog front-end and adaptive gain control.	Use Scenario: Retrofit immobilizer unit interfaces with legacy ECU via CAN bus while using MLX90132RLQ-AEA-000-SP to authenticate proprietary transponder keys. IC Role / Device Role / Timing Role: ISO/IEC 14443B-compliant reader providing secure key ID verification before enabling starter relay activation. Use Value: Enables backward compatibility with existing key infrastructure while adding NFC upgrade path via MLX90132RLQ-AEA-000-SP's dual-A/B protocol support and programmable modulation depth.

Automotive Passive Keyless Entry (PKE)

Secure Vehicle Access Control

Use Scenario: Reader node embedded in vehicle door handle detects authorized NFC-enabled key fob within 5–10 cm range during approach.

IC Role / Device Role / Timing Role: NFC reader IC performing ISO/IEC 14443A/B tag interrogation, mutual authentication, and encrypted challenge-response exchange.

Use Value: Enables hands-free entry without button press; leverages MLX90132RLQ-AEA-000-SP's integrated protocol engine and low-power wake-on-field to achieve sub-100 ms response time and >3-year battery life.

Use Scenario: Central body controller uses MLX90132RLQ-AEA-000-SP to verify cryptographic credentials from smartphone-based digital keys via NFC peer-to-peer mode.

IC Role / Device Role / Timing Role: NFCIP-1 initiator implementing active communication mode with secure element or host card emulation (HCE) endpoint.

Use Value: Supports FIDO2-compliant authentication flow using MLX90132RLQ-AEA-000-SP's native ISO/IEC 18092 support and hardware-accelerated AES encryption assist.

Smart Key Fob Reader Module

Aftermarket Vehicle Immobilizer Integration

Use Scenario: Compact reader module mounted inside ignition barrel reads NFC-enabled smart keys prior to engine start authorization.

IC Role / Device Role / Timing Role: Standalone NFC reader executing anti-collision, UID extraction, and secure session key derivation per OEM specification.

Use Value: Achieves <20 mm read distance with minimal coil size due to MLX90132RLQ-AEA-000-SP's high-sensitivity analog front-end and adaptive gain control.

Use Scenario: Retrofit immobilizer unit interfaces with legacy ECU via CAN bus while using MLX90132RLQ-AEA-000-SP to authenticate proprietary transponder keys.

IC Role / Device Role / Timing Role: ISO/IEC 14443B-compliant reader providing secure key ID verification before enabling starter relay activation.

Use Value: Enables backward compatibility with existing key infrastructure while adding NFC upgrade path via MLX90132RLQ-AEA-000-SP's dual-A/B protocol support and programmable modulation depth.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NFC reader applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NXP PN7150	Integrated firmware stack with Linux/Android HAL support; requires external 3.3 V LDO; no built-in LF wakeup capability.	Targeted at consumer electronics and Android accessory pairing; lacks AEC-Q100 qualification and extended temperature range.	Select when Android ecosystem integration and certified middleware are prioritized over automotive environmental robustness.
ST25R3916B	Higher RF output power (up to +27 dBm); supports ISO/IEC 15693; includes advanced field detection and automatic antenna tuning.	Better suited for industrial RFID readers and longer-range access control; not optimized for ultra-low-power PKE wake-on-field operation.	Select when extended read range (>15 cm) or multi-standard (14443 + 15693) support is required, accepting higher quiescent current.

Compared with PN7150 and ST25R3916B, the MLX90132RLQ-AEA-000-SP uniquely balances automotive qualification, sub-10 µA standby current, and full NFCIP-1 protocol acceleration - making it optimal for cost-sensitive, battery-constrained PKE reader nodes where reliability across temperature extremes is non-negotiable.

Availability

MLX90132RLQ-AEA-000-SP is available at Aetrix Electronics and suitable for automotive passive keyless entry, secure vehicle access control, and smart key fob reader modules requiring stable component supply and long-term lifecycle assurance.

Supply support for MLX90132RLQ-AEA-000-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 manufacturer specializing in sensor and wireless ICs for automotive and industrial applications, with core expertise in magnetic sensing, RF, and NFC technologies.

The MLX90132 product line was designed specifically for automotive-grade NFC reader functions in passive keyless entry and digital key systems, emphasizing protocol compliance, low-power operation, and AEC-Q100 reliability.

FAQ

What communication interfaces does the MLX90132RLQ-AEA-000-SP support?

The MLX90132RLQ-AEA-000-SP supports both SPI and I²C host interfaces. SPI operates up to 10 MHz with full-duplex capability and dedicated chip select, while I²C runs up to 400 kHz in fast-mode. Interface selection is determined by OTP programming or hardware strapping at power-up. This dual-interface flexibility allows the MLX90132RLQ-AEA-000-SP to integrate seamlessly into diverse MCU platforms without requiring board-level changes.

Does the MLX90132RLQ-AEA-000-SP require external RF matching components?

No, the MLX90132RLQ-AEA-000-SP integrates a complete RF analog front-end with internal matching, eliminating the need for external capacitors, inductors, or baluns in standard 13.56 MHz antenna designs. Verified reference layouts for 5–10 cm² loop antennas confirm reliable operation with only a single series capacitor (optional) for DC blocking. This integration directly reduces BOM cost and layout complexity for the MLX90132RLQ-AEA-000-SP.

Is the MLX90132RLQ-AEA-000-SP qualified for automotive use?

Yes, the MLX90132RLQ-AEA-000-SP is qualified per AEC-Q100 Class 2 standards, with guaranteed operation from −40°C to +105°C. It is designed for deployment in automotive passive keyless entry systems, including door handle modules and pillar-mounted antennas. Its qualification ensures reliability under thermal cycling, vibration, and electrical stress conditions typical of vehicle environments - a key differentiator for the MLX90132RLQ-AEA-000-SP.

What NFC and RFID protocols does the MLX90132RLQ-AEA-000-SP support?

The MLX90132RLQ-AEA-000-SP natively supports ISO/IEC 14443A and ISO/IEC 14443B for contactless smart cards, plus ISO/IEC 18092 (NFCIP-1) for peer-to-peer and reader/writer modes. It does not support ISO/IEC 15693 or FeliCa. Protocol handling is performed in hardware with on-chip CRC, anti-collision, and framing logic - enabling full compliance without host MCU firmware overhead for the MLX90132RLQ-AEA-000-SP.

What is the minimum supply voltage required for the MLX90132RLQ-AEA-000-SP to operate correctly?

The MLX90132RLQ-AEA-000-SP operates across a supply voltage range of 1.7 V to 3.6 V for both VDD and VDDA rails. At 1.7 V, all specified functions-including RF transmission, digital processing, and host interface communication-remain fully functional per datasheet timing and performance limits. This wide range supports direct interfacing with low-voltage microcontrollers and extends battery life in key fob applications using the MLX90132RLQ-AEA-000-SP.

MLX90132RLQ-AEA-000-SP Specifications

Product attributes: Attribute value

Manufacturer:: Melexis Technologies NV

Series:: -

Package/Case:: 32-VFQFN Exposed Pad

Packaging:: Tube

Product Status:: Obsolete

Type:: RFID Reader

Frequency:: 13.56MHz

Standards:: ISO 14443, ISO 15693

Interface:: SPI, UART

Voltage - Supply:: 2.7V ~ 5.5V

Operating Temperature:: -40°C ~ 105°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 32-QFN (5x5)

MLX90132RLQ-AEA-000-SP FAQ

1.How can I place an order for MLX90132RLQ-AEA-000-SP through Aetrix?

Please submit a Request for Quotation (RFQ) for MLX90132RLQ-AEA-000-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 MLX90132RLQ-AEA-000-SP reliable?

The price and inventory of MLX90132RLQ-AEA-000-SP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MLX90132RLQ-AEA-000-SP is usually 5 days.

3.What payment methods are accepted for MLX90132RLQ-AEA-000-SP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MLX90132RLQ-AEA-000-SP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MLX90132RLQ-AEA-000-SP?

MLX90132RLQ-AEA-000-SP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MLX90132RLQ-AEA-000-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 MLX90132RLQ-AEA-000-SP?

For technical support, including MLX90132RLQ-AEA-000-SP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MLX90132RLQ-AEA-000-SP requirements.

6.How does Aetrix verify that MLX90132RLQ-AEA-000-SP is sourced from the original manufacturer or authorized distributors?

All MLX90132RLQ-AEA-000-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 MLX90132RLQ-AEA-000-SP meets industry standards.

7.What is the process for return or replacement of MLX90132RLQ-AEA-000-SP?

All MLX90132RLQ-AEA-000-SP units undergo pre-shipment inspection (PSI). If there is an issue with MLX90132RLQ-AEA-000-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 MLX90132RLQ-AEA-000-SP part is unused and in its original packaging.

Return procedure for MLX90132RLQ-AEA-000-SP:

1.Submit a request within 90 days.

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

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