Analog Devices Inc. ADL5500-EVALZ

Overview

ADL5500-EVALZ from Analog Devices is an evaluation board designed to characterize the ADL5500 TruPwr™ RMS power detector IC - a broadband 100 MHz to 6 GHz mean-responding RF power detector with ±0.1 dB accuracy over 8.5 dB dynamic range at 900 MHz, 6.4 V/V rms conversion gain, and 50 Ω input impedance. It supports rapid validation of RF transmitter/receiver power measurement in W-CDMA, LTE, and OFDM-based systems.

For engineers reviewing the ADL5500-EVALZ datasheet, ADL5500-EVALZ layout, ADL5500-EVALZ test setup, or ADL5500-EVALZ signal integrity performance, this board provides fully assembled, calibrated hardware with documented RF and DC interface schematics, proven decoupling networks, and verified measurement methodology for ADL5500 device-level characterization under real-world modulated waveforms.

Technical Context

The ADL5500-EVALZ implements the ADL5500 IC in a 4-ball, 1.0 mm × 1.0 mm WLCSP package mounted on a 4-layer FR-4 PCB with controlled-impedance 50 Ω microstrip RF input trace and optimized ground plane. It integrates on-board 100 pF + 0.1 µF VPOS decoupling, configurable output filtering via solder-jumper-selectable CFLT (0–10 nF), and edge-mounted SMA connector for direct RF signal injection.

Board-level design enforces strict RF layout rules: minimal RFIN trace length (<5 mm), isolated COMM return path, dedicated VRMS analog routing with guard ring, and thermal relief for the ADL5500 die attach. The evaluation platform enables accurate measurement of temperature-stable RMS response across −40°C to +85°C ambient, supporting calibration of high-crest-factor signals including QPSK, 16QAM, and WCDMA uplink waveforms.

Key Specifications

Availability

ADL5500-EVALZ is available at Aetrix Electronics and suitable for RF power measurement validation, 5G NR transceiver development, cellular base station calibration, and high-frequency test equipment prototyping requiring stable component supply and documented reference designs.

Supply support for ADL5500-EVALZ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with deep expertise in RF, precision measurement, and power management technologies.

The ADL5500-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform product line, engineered specifically to accelerate time-to-test for true-RMS RF power detectors used in wireless infrastructure, aerospace, and instrumentation applications.

FAQ

What is the primary function of the ADL5500-EVALZ?

The ADL5500-EVALZ is a fully assembled evaluation board for the ADL5500 TruPwr™ RMS power detector IC. Its primary function is to enable rapid, repeatable characterization of the ADL5500's RF power measurement performance - including linearity, temperature stability, and crest factor response - across 100 MHz to 6 GHz using standard lab equipment such as signal generators and oscilloscopes. The ADL5500-EVALZ provides all necessary biasing, filtering, and interconnects to isolate and validate the core IC functionality without custom PCB development.

Does ADL5500-EVALZ support modulated waveform testing like QPSK or OFDM?

Yes, ADL5500-EVALZ supports modulated waveform testing including QPSK, 16QAM, WCDMA, and OFDM signals. The board's low-noise layout, optimized 50 Ω RF path, and configurable output filtering (via solder-jumpered CFLT) preserve the ADL5500's ability to accurately measure high-crest-factor waveforms - as validated in the ADL5500 datasheet Figures 22–27. Users can directly inject modulated RF signals via the SMA connector and capture clean VRMS dc outputs for error analysis against CW references.

What power supply requirements does ADL5500-EVALZ have?

ADL5500-EVALZ requires a single 2.7 V to 5.5 V DC supply, delivering ≤1.0 mA quiescent current at no RF input. It features onboard dual-stage decoupling: a 100 pF ceramic capacitor and a 0.1 µF X7R capacitor placed adjacent to the ADL5500 VPOS pin. The board accepts power via a screw-terminal header or optional on-board LDO footprint; no external regulators are needed for basic operation. Supply voltage directly affects ADL5500-EVALZ's measurable dynamic range due to rail-limited VRMS swing.

How is RF input matched on ADL5500-EVALZ?

ADL5500-EVALZ achieves broadband 50 Ω RF input matching through a carefully routed 50 Ω microstrip trace (length <5 mm) connecting the edge-mounted SMA connector directly to the ADL5500 RFIN ball. No external matching components are required because the ADL5500 IC itself integrates internal ac-coupling and broadband input termination. The PCB stack-up and trace geometry are designed per the ADL5500 datasheet layout guidelines to maintain impedance control and minimize reflections across 100 MHz–6 GHz.

Can ADL5500-EVALZ be used for temperature-dependent measurements?

Yes, ADL5500-EVALZ supports temperature-dependent measurements across the full −40°C to +85°C operating range of the ADL5500 IC. Its 4-layer FR-4 construction includes thermal vias beneath the ADL5500 WLCSP package to improve heat dissipation, and the layout avoids thermal gradients near critical nodes (RFIN, VRMS, COMM). When used with environmental chambers or temperature-controlled fixtures, the ADL5500-EVALZ enables direct validation of the ADL5500's ±0.1 dB temperature stability over 8.5 dB dynamic range - as specified in the ADL5500 datasheet Table 1.