Analog Devices Inc. EVAL-CN0551-EBZ

Overview

EVAL-CN0551-EBZ from Analog Devices is a four-layer evaluation board designed to validate the CN0551 USB-powered 433.92 MHz RF power amplifier circuit, featuring SMA RF I/O (J1 male input, J2 female output), micro-USB +5 V power input, and thermal protection via ADT6401 temperature switch. It supports integration with ADALM-PLUTO SDR for RF transmission testing in lab and educational environments.

For engineers reviewing the EVAL-CN0551-EBZ datasheet, EVAL-CN0551-EBZ pinout, EVAL-CN0551-EBZ application, or EVAL-CN0551-EBZ equivalent, key considerations include its 433.92 MHz operating frequency, +27 dBm max RF output, -3 dBm max RF input, 50 Ω coplanar waveguide routing, and configurable overtemperature trip points (65°C to 115°C) via solder jumpers JP1/JP2.

Technical Context

The EVAL-CN0551-EBZ implements a complete 433.92 MHz transmit chain comprising the ADL5324 RF power amplifier (27 dB gain, +27 dBm POUT), AD8353 driver amplifier, ADG901 SPDT RF switch, and ADT6401 thermal monitor with programmable trip point. Signal path includes a SAW filter and AC-coupling before amplification.

Power delivery uses an ADM7160 LDO and LTM4693 µModule regulator to supply stable bias to active components; thermal management relies on copper-clad PCB (2 oz./2 oz.) and user-configurable hysteresis-enabled temperature shutdown. The board interfaces exclusively via micro-USB (5 V, ≤500 mA) and SMA RF connectors - no digital control interface is present.

Key Specifications

Availability

EVAL-CN0551-EBZ is available at Aetrix Electronics and suitable for RF prototyping, SDR-based wireless transceiver development, and university-level RF amplifier education requiring stable component supply and documented reference design support.

Supply support for EVAL-CN0551-EBZ 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

Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and connectivity applications.

EVAL-CN0551-EBZ belongs to Analog Devices' Circuits from the Lab® reference design series, developed to accelerate validation of RF signal chains using industry-standard SDR platforms like ADALM-PLUTO.

FAQ

What is the primary function of the EVAL-CN0551-EBZ?

The EVAL-CN0551-EBZ is an evaluation board that enables functional validation of the CN0551 433.92 MHz RF power amplifier circuit. It integrates the ADL5324, AD8353, ADG901, and ADT6401 to provide a complete, USB-powered transmit stage for use with ADALM-PLUTO. The EVAL-CN0551-EBZ does not perform signal generation or modulation - it amplifies externally supplied RF signals within its specified input/output range.

Can the EVAL-CN0551-EBZ be used with RF sources other than ADALM-PLUTO?

Yes, the EVAL-CN0551-EBZ accepts any -3 dBm or lower 433.92 MHz RF signal at its J1 SMA input, regardless of source. Its 50 Ω impedance-matched coplanar waveguide layout ensures compatibility with standard lab equipment including signal generators and spectrum analyzers. However, users must ensure external sources do not exceed the -3 dBm input limit to avoid damaging the EVAL-CN0551-EBZ front-end components.

How is thermal protection configured on the EVAL-CN0551-EBZ?

Thermal protection on the EVAL-CN0551-EBZ is implemented via the ADT6401 temperature switch, with trip point selection achieved by configuring solder jumpers JP1 and JP2. Six valid settings are supported (65°C to 115°C, each with defined hysteresis). The EVAL-CN0551-EBZ disables amplifier bias when the board reaches the selected threshold, indicated by illumination of the red TOVER LED.

What power supply requirements must be met for reliable operation of the EVAL-CN0551-EBZ?

The EVAL-CN0551-EBZ requires a stable +5 V DC supply delivered through its micro-USB port P1. Due to peak current draw up to 500 mA under full RF load and elevated temperature, Analog Devices recommends a power adapter rated for at least 0.5 A. Using underspecified supplies may cause brownout, intermittent operation, or failure to achieve rated +27 dBm output on the EVAL-CN0551-EBZ.

Is the EVAL-CN0551-EBZ RoHS-compliant and suitable for production use?

The EVAL-CN0551-EBZ is a lab-grade evaluation board intended for design verification and educational use, not for end-product deployment. While its constituent ICs (e.g., ADL5324, ADT6401) are RoHS-compliant, the EVAL-CN0551-EBZ itself carries no production qualification or reliability certification. For volume applications, designers must implement the CN0551 circuit on their own PCB using qualified components and appropriate thermal/mechanical design practices.