Analog Devices Inc. ADL5505-EVALZ

Overview

ADL5505-EVALZ from Analog Devices is an evaluation board designed to characterize the ADL5505 TruPwr™ true rms RF power detector IC operating from 450 MHz to 6000 MHz. It supports single-supply operation (2.5 V–3.3 V), delivers ±0.25 dB rms detection accuracy over temperature, and enables precise power measurement of high-crest-factor waveforms including LTE, W-CDMA, and WiMAX signals in RF transmitter/receiver signal chains.

For engineers reviewing the ADL5505-EVALZ datasheet, ADL5505-EVALZ setup guide, ADL5505-EVALZ test configuration, or ADL5505-EVALZ compatibility with ADL5505 detector ICs, this board provides validated RF input interfacing, on-board decoupling, output filtering options, and direct access to all four ADL5505 ball terminals (RFIN, VPOS, COMM, VRMS) for lab-based validation of dynamic range, linearity, and temperature stability.

Technical Context

The ADL5505-EVALZ implements a complete reference test platform for the ADL5505 4-ball WLCSP detector, featuring a 75 Ω shunt-matched RF input path, dual-stage supply decoupling (100 pF + 0.1 µF), and configurable output low-pass filtering via solder-jumper-selectable COUT options. It replicates the recommended basic connections from the ADL5505 datasheet Rev. A, including proper grounding strategy and layout practices for high-frequency rms detection.

Board-level design incorporates controlled-impedance microstrip routing for RFIN and VRMS traces, thermal relief for the ADL5505's 0.8 mm × 0.8 mm WLCSP footprint, and test points for probing VPOS, COMM, RFIN, and VRMS without signal perturbation. The board does not include active circuitry beyond passive interface components and is intended solely for bench evaluation-not production deployment.

Key Specifications

Availability

ADL5505-EVALZ is available at Aetrix Electronics and suitable for RF power detector characterization, LTE/W-CDMA transmitter calibration, and high-frequency rms measurement validation requiring stable component supply and traceable evaluation hardware.

Supply support for ADL5505-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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and RF applications.

The ADL5505-EVALZ belongs to Analog Devices' RF power detector evaluation platform family, engineered to accelerate development of accurate, wideband RF power monitoring solutions for wireless infrastructure, test equipment, and aerospace/defense systems.

FAQ

What is the primary purpose of the ADL5505-EVALZ?

The ADL5505-EVALZ is a dedicated evaluation board for the ADL5505 true rms RF power detector IC. It provides a ready-to-use platform to validate key performance parameters-including dynamic range, temperature stability, and crest factor tolerance-across the full 450 MHz to 6000 MHz frequency band. Engineers use ADL5505-EVALZ to verify ADL5505 behavior under real-world RF signal conditions before integrating the detector into final designs.

Does ADL5505-EVALZ support direct connection to 50 Ω test equipment?

Yes, ADL5505-EVALZ features a 75 Ω shunt resistor at the RFIN pad, providing broadband impedance matching to standard 50 Ω RF sources and analyzers. This configuration achieves acceptable VSWR across the ADL5505's operational bandwidth and aligns with the recommended input interface in the ADL5505 datasheet Rev. A. No external matching network is required for initial bench testing of ADL5505-EVALZ.

Can ADL5505-EVALZ be used with different supply voltages?

Yes, ADL5505-EVALZ supports the full ADL5505 operating supply range of 2.5 V to 3.3 V. It accepts external DC power via screw terminal or header, and onboard decoupling (100 pF + 0.1 µF) ensures stable operation at any voltage within that range. Performance metrics such as conversion gain and dynamic range on ADL5505-EVALZ will track the published ADL5505 specifications at each tested supply level.

How is the VRMS output conditioned on ADL5505-EVALZ?

ADL5505-EVALZ implements the ADL5505's recommended output filtering: a 100 Ω internal series resistance (inherent to the IC) combined with a populated 100 nF shunt capacitor (COUT) to form a low-pass filter. This reduces residual ripple on the VRMS dc output while preserving pulse response time (~3 µs). Test points allow direct probing of the filtered VRMS signal without loading effects.

Is ADL5505-EVALZ compatible with other Analog Devices detectors?

No-ADL5505-EVALZ is specifically laid out for the ADL5505's 4-ball, 0.8 mm × 0.8 mm WLCSP package and its unique pinout (RFIN, VPOS, COMM, VRMS). It is not mechanically or electrically compatible with other detector families such as ADL5511, AD8361, or LT5537. Each requires its own dedicated evaluation platform due to differences in package, pin assignment, and biasing requirements.