Analog Devices Inc. ADRF5044-EVALZ

Overview

ADRF5044-EVALZ from Analog Devices is a 4-layer evaluation board designed to characterize the ADRF5044 100 MHz–30 GHz silicon SP4T RF switch in real-world high-frequency systems. It features 2.4 mm end-launch connectors (J1–J5), coplanar waveguide transmission lines (50 Ω, 14 mil trace/5 mil ground clearance), Rogers RO4003 top dielectric (8 mil), and full thermal/RF grounding via dense via arrays under the LGA package and traces.

For engineers reviewing the ADRF5044-EVALZ datasheet, ADRF5044-EVALZ pinout, ADRF5044-EVALZ application, or ADRF5044-EVALZ equivalent, this board enables accurate S-parameter measurement, hot-switching validation, P1dB/IP3 characterization, and thermal performance assessment of the ADRF5044 switch across its full ultrawideband range without connector or cable de-embedding artifacts.

Technical Context

The ADRF5044-EVALZ implements a calibrated, low-loss RF test platform for the ADRF5044 SP4T switch, using a 4-layer stackup with top-layer RF routing, solid inner/bottom ground planes, and optimized CPWG geometry. Its 2.4 mm launchers support direct connection to vector network analyzers up to 50 GHz, while the thru-calibration line (J6–J7) allows on-board loss compensation during calibration.

Board-level design integrates 100 pF bypass capacitors on VDD/VSS supply lines, 0 Ω jumpers for V1/V2 control signal routing, and unpopulated footprints for additional decoupling (C3/C4/C7/C8 = 0.1 µF; C5/C6 = 10 µF). The exposed pad of the ADRF5044 IC is connected to AGND through >30 plated-through vias for optimal RF return path and thermal dissipation.

Key Specifications

Availability

ADRF5044-EVALZ is available at Aetrix Electronics and suitable for microwave radio development, radar front-end prototyping, and VSAT transceiver validation requiring stable component supply, repeatable high-frequency measurement infrastructure, and RoHS-compliant evaluation platforms.

Supply support for ADRF5044-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 RF ICs, serving precision instrumentation, communications, aerospace, and defense markets since 1965.

The ADRF5044-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform product line, engineered specifically to accelerate time-to-test for broadband RF switches and enable reliable, repeatable characterization of ultrawideband components under real operating conditions.

FAQ

What is the purpose of the thru-calibration line (J6–J7) on the ADRF5044-EVALZ?

The thru-calibration line on the ADRF5044-EVALZ consists of two unpopulated 2.4 mm launchers (J6 and J7) connected by a CPWG trace matching the main RF paths. It enables TRL (Thru-Reflect-Line) calibration to de-embed PCB trace loss and phase shift, improving measurement accuracy of the ADRF5044's true S-parameters - especially critical for isolation and group delay validation above 20 GHz. This feature is integral to the ADRF5044-EVALZ design and directly supports high-fidelity RF characterization workflows.

Can the ADRF5044-EVALZ be used to evaluate hot-switching performance of the ADRF5044?

Yes, the ADRF5044-EVALZ supports hot-switching evaluation of the ADRF5044 up to 21 dBm input power, as specified in the ADRF5044 datasheet. Its low-inductance 2.4 mm launchers, controlled-impedance routing, and robust grounding minimize transient reflections and supply bounce during switching events. The board's V1/V2 test points (TP2/TP3) allow precise timing alignment between RF signal and digital control edges - essential for measuring 37 ns 0.1 dB settling time and verifying integrity under simultaneous RF and logic transitions.

Does the ADRF5044-EVALZ include provisions for external bias teeing or dc blocking?

No, the ADRF5044-EVALZ does not integrate bias tees or dc blocking capacitors on its RF paths. All five RF ports (RFC, RF1–RF4) are dc-coupled and routed directly to 2.4 mm launchers. If dc blocking is required - for example, when interfacing with dc-biased amplifiers or mixers - external bias tees must be added at the launcher interface. This design choice preserves signal integrity and avoids parasitic resonance, aligning with the ADRF5044-EVALZ's role as a reference-grade measurement platform rather than an application-ready subsystem.

What is the recommended power-up sequence when using the ADRF5044-EVALZ with the ADRF5044?

The ADRF5044-EVALZ supports the ADRF5044's recommended power-up sequence: first connect GND, then apply VDD (+3.3 V) and VSS (−3.3 V) simultaneously or with VSS slightly delayed, followed by asserting valid CMOS/LVTTL logic on V1/V2 (TP2/TP3), and finally applying RF signals. The board's 100 pF bypass caps on TP1/TP4 and 0 Ω jumpers on TP2/TP3 ensure clean sequencing - critical to avoid ESD structure damage and ensure deterministic switch state initialization on the ADRF5044.

How does the ADRF5044-EVALZ differ from the probe matrix board referenced in the ADRF5044 datasheet?

The ADRF5044-EVALZ is a populated, connectorized 4-layer evaluation board intended for system-level RF testing with VNAs and signal sources, whereas the probe matrix board is an unpopulated, bare-die probing fixture for wafer-level or singulated-die characterization using GSG probes. The ADRF5044-EVALZ uses 2.4 mm launchers and supports full-power operation (24 dBm), while the probe board relies on direct probe contact and is limited to lower power due to thermal constraints and coupling artifacts - making the ADRF5044-EVALZ the authoritative platform for isolation, linearity, and thermal validation of the ADRF5044.