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Silicon Labs SLWRB4503A

Name: SLWRB4503A
Brand: Silicon Labs
SKU: SLWRB4503A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SLWRB4503A

Manufacturer:: Silicon Labs

Category:: RF, RFID, Wireless Evaluation Boards

Package:

Datasheet:: SLWRB4503A.pdf

Description:: EZR32LG 915 MHZ 20 DBM RADIO BOA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,869

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Product details

Overview

SLWRB4503A from Silicon Labs is a wireless MCU evaluation board based on the EZR32LG330F256R68G SoC, integrating an ARM Cortex-M3 core, 256 kB flash/32 kB RAM, sub-GHz EZRadioPRO transceiver (142–1050 MHz), USB interface, and ultra-low-power operation down to 0.65 µA in Stop Mode. It enables rapid prototyping of battery-powered smart metering and sensor network applications.

For engineers reviewing the SLWRB4503A datasheet, SLWRB4503A pinout, SLWRB4503A application, or SLWRB4503A equivalent, this page delivers verified technical context, key specifications, supply availability, manufacturer background, and targeted FAQs - all grounded in Silicon Labs' official documentation for the SLWRB4503A evaluation platform.

Technical Context

The SLWRB4503A implements the EZR32LG330F256R68G SoC, featuring a 48 MHz ARM Cortex-M3 CPU with hardware AES-128/256 acceleration, 12-bit 1 Msps ADC, 12-bit 500 ksp/s DAC, and dual LEUARTs operating from a 32.768 kHz clock at ≤9600 baud. Its RF subsystem supports (G)FSK/(G)MSK/OOK modulation with –133 dBm sensitivity and +20 dBm output power.

System-level integration includes full USB 2.0 OTG support (6 IN/6 OUT endpoints), PRS-based autonomous peripheral coordination, LESENSE for 16-sensor low-energy monitoring in EM2, and configurable energy modes (EM0–EM4) with wake-up times under 2 µs from Stop Mode.

Key Specifications

Parameter	Value and Actual Design Meaning
Core	ARM Cortex-M3 @ up to 48 MHz - enables real-time protocol stack execution and sensor fusion without external co-processor
Memory	256 kB flash / 32 kB RAM - sufficient for Zigbee SE, 802.15.4g, or proprietary mesh firmware with OTA update space
RF Transceiver	EZRadioPRO, 142–1050 MHz, –133 dBm sensitivity, +20 dBm output - meets FCC Part 90 and EN 300 220 requirements for licensed narrowband systems
Low-Power Modes	0.65 µA Stop Mode, 20 nA Shutoff Mode - extends coin-cell battery life to >10 years in periodic wake-up sensor nodes
Analog Peripherals	12-bit 1 Msps ADC, 12-bit DAC, 2× OPAMP, LESENSE - supports direct interfacing to resistive/capacitive/LC sensors without external signal conditioning
Communication	USB 2.0 OTG, 2× USART, 2× UART, 2× LEUART, 2× I²C - enables simultaneous host debugging, sensor data streaming, and low-power wake-up communication
Security	Hardware AES-128/256 accelerator - offloads encryption for secure firmware updates and encrypted sensor payload transmission

Availability

SLWRB4503A is available at Aetrix Electronics and suitable for smart metering, industrial sensor networks, building automation, and battery-powered security systems requiring stable component supply and full development ecosystem support.

Supply support for SLWRB4503A 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

Silicon Labs is a fabless semiconductor company specializing in secure, intelligent wireless and wired connectivity solutions for IoT, industrial, and infrastructure markets.

The EZR32LG family - including the SLWRB4503A evaluation platform - was designed specifically for ultra-low-power, sub-GHz wireless applications in smart utility metering, environmental monitoring, and asset tracking where battery life and regulatory compliance are critical.

FAQ

What is the primary function of the SLWRB4503A evaluation board?

The SLWRB4503A evaluation board serves as a fully assembled and tested hardware platform for the EZR32LG330F256R68G wireless MCU. It provides immediate access to all SoC peripherals - including USB, sub-GHz RF, ADC/DAC, LEUART, and GPIO - enabling rapid firmware development, RF performance validation, and system-level interoperability testing for battery-operated wireless applications. The SLWRB4503A includes onboard debug circuitry, antenna matching network, and Simplicity Studio integration.

Does the SLWRB4503A support IEEE 802.15.4g and W-MBus protocols out of the box?

Yes, the SLWRB4503A - powered by the EZR32LG330F256R68G SoC - is explicitly designed to support IEEE 802.15.4g and W-MBus (EN 13757-4) standards. Its EZRadioPRO transceiver delivers –133 dBm sensitivity and +20 dBm output power across 169 MHz and 868 MHz bands, meeting spectral mask and blocking requirements for certified smart meter deployments. Pre-integrated protocol stacks and reference designs for both standards are available in Silicon Labs' Simplicity Studio.

What power supply options does the SLWRB4503A support during development?

The SLWRB4503A supports three power configurations: USB bus power (5 V via micro-USB), external 3.3 V regulated supply (via J10 header), and coin-cell battery (CR2032) for ultra-low-power runtime testing. Voltage regulation is handled by onboard DC/DC and LDO circuits that deliver stable 1.8 V, 3.3 V, and RF supply rails to the EZR32LG330F256R68G SoC. Current measurement headers allow precise EM0–EM4 mode characterization of the SLWRB4503A.

Can the SLWRB4503A be used to evaluate RF performance in licensed frequency bands like FCC Part 90?

Yes, the SLWRB4503A supports FCC Part 90-compliant operation through its EZR32LG330F256R68G SoC, which integrates an EZRadioPRO transceiver with 69 dB adjacent-channel selectivity (12.5 kHz spacing), 79 dB blocking at 1 MHz, and programmable TX/RX filters. The board's RF layout includes calibrated 50 Ω antenna port, SMA connector, and impedance-matched matching network - enabling accurate conducted and radiated emission testing per FCC/ETSI requirements. Regulatory test reports for the SLWRB4503A are published by Silicon Labs.

Is the SLWRB4503A pin-compatible with other EZR32LG evaluation boards such as SLWRB4303A?

No, the SLWRB4503A is not pin-compatible with SLWRB4303A or other EZR32 evaluation boards. Each board uses a distinct carrier layout optimized for its target SoC's package (QFN64 for SLWRB4503A) and feature set. While the underlying EZR32LG330F256R68G SoC shares pinout compatibility with other EZR32LG330 variants (e.g., R55G, R63G), the SLWRB4503A's expansion headers, debug interface routing, and RF front-end are unique to its design and cannot be mechanically or electrically substituted for SLWRB4303A without redesign.

SLWRB4503A Specifications

Product attributes: Attribute value

Manufacturer:: Silicon Labs

Series:: Leopard Gecko

Packaging:: Box

Product Status:: Obsolete

Type:: Transceiver

Frequency:: 915MHz

Contents:: Board(s)

Utilized IC / Part:: EZR32LG

SLWRB4503A FAQ

1.How can I place an order for SLWRB4503A through Aetrix?

Please submit a Request for Quotation (RFQ) for SLWRB4503A 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 SLWRB4503A reliable?

The price and inventory of SLWRB4503A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SLWRB4503A is usually 5 days.

3.What payment methods are accepted for SLWRB4503A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SLWRB4503A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SLWRB4503A?

SLWRB4503A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SLWRB4503A 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 SLWRB4503A?

For technical support, including SLWRB4503A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SLWRB4503A requirements.

6.How does Aetrix verify that SLWRB4503A is sourced from the original manufacturer or authorized distributors?

All SLWRB4503A 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 SLWRB4503A meets industry standards.

7.What is the process for return or replacement of SLWRB4503A?

All SLWRB4503A units undergo pre-shipment inspection (PSI). If there is an issue with SLWRB4503A, 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 SLWRB4503A part is unused and in its original packaging.

Return procedure for SLWRB4503A:

1.Submit a request within 90 days.

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

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