Analog Devices Inc. ADRF5715-EVALZ

Overview

ADRF5715-EVALZ from Analog Devices is an evaluation board designed to characterize the ADRF5715 1-bit silicon digital attenuator (1 MHz–30 GHz, 16 dB range, 0.6 dB insertion loss at 8 GHz, ±0.15 dB accuracy up to 18 GHz) in RF signal path applications including 5G mmWave infrastructure and test instrumentation. It supports dual-supply (±3.3 V) and single-supply (3.3 V/VSS = GND) operation with validated RF layout for 50 Ω coplanar waveguide interfaces.

For engineers reviewing the ADRF5715-EVALZ datasheet, ADRF5715-EVALZ pinout, ADRF5715-EVALZ application, or ADRF5715-EVALZ equivalent, this board enables rapid validation of RF amplitude settling time (6.5 µs to 0.1 dB), high-linearity performance (P0.1dB = 33 dBm in insertion loss state), and thermal grounding per CC-12-6 LGA package requirements under real-world bias and signal conditions.

Technical Context

The ADRF5715-EVALZ implements a fully populated, impedance-matched reference design for the ADRF5715 IC, featuring 50 Ω CPWG traces (16 mil width, 6 mil clearance), optimized via-stitched ground planes, and dedicated bypassing (100 pF on VDD/VSS). It validates bidirectional RF operation at ATTIN/ATTOUT with DC-coupled ports and no external matching required.

Board-level design follows Analog Devices' recommended stackup for Rogers RO4003 (12 mil dielectric), includes exposed pad thermal anchoring, and supports both dual-supply (±3.3 V) and single-supply (3.3 V/GND) configurations - with documented performance trade-offs in P0.1dB (21 dBm vs. 33 dBm) and IP3 (33 dBm vs. 51 dBm) between modes.

Key Specifications

Availability

ADRF5715-EVALZ is available at Aetrix Electronics and suitable for 5G millimeter wave base stations, automated test equipment (ATE), military radar front-ends, and microwave VSAT terminals requiring stable component supply and proven RF evaluation reference designs.

Supply support for ADRF5715-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, and defense markets since 1965.

The ADRF5715-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform family, engineered to accelerate development of wideband RF signal conditioning circuits - specifically for mmWave infrastructure, electronic warfare, and high-speed test systems demanding ultrawideband attenuation control.

FAQ

What is the primary function of the ADRF5715-EVALZ?

The ADRF5715-EVALZ is an evaluation board that provides a complete, layout-optimized platform for characterizing the ADRF5715 1-bit digital attenuator. It enables engineers to validate RF performance - including insertion loss, attenuation accuracy, switching speed, and linearity - across 1 MHz to 30 GHz under both dual-supply (±3.3 V) and single-supply (3.3 V/GND) conditions. The ADRF5715-EVALZ includes calibrated 50 Ω CPWG interfaces, thermal vias, and proper bypassing to reflect production-ready implementation of the ADRF5715.

Does the ADRF5715-EVALZ support both dual-supply and single-supply operation for the ADRF5715?

Yes, the ADRF5715-EVALZ supports both configurations. It ships with jumpers and layout provisions to apply either ±3.3 V (VDD = +3.3 V, VSS = −3.3 V) or single 3.3 V (VDD = 3.3 V, VSS = GND). Performance data shows measurable trade-offs: dual-supply delivers P0.1dB = 33 dBm and IP3 = 51 dBm, while single-supply reduces those to 21 dBm and 33 dBm respectively. The ADRF5715-EVALZ documentation includes measurement guidance for both modes.

What RF interface standard does the ADRF5715-EVALZ use for ATTIN and ATTOUT?

The ADRF5715-EVALZ uses a coplanar waveguide (CPWG) transmission line structure with 50 Ω characteristic impedance, implemented per Analog Devices' recommended PCB stackup: 16 mil trace width, 6 mil ground clearance, and 12 mil Rogers RO4003 dielectric. ATTIN and ATTOUT are DC-coupled - no external blocking capacitors are required when the RF line DC potential is 0 V. This matches the internal 50 Ω termination of the ADRF5715 and eliminates need for external matching networks.

How is thermal performance managed on the ADRF5715-EVALZ?

Thermal performance on the ADRF5715-EVALZ is managed through direct soldering of the ADRF5715's exposed pad (EPAD) to a solid ground plane, reinforced with ≥20 thermal vias evenly distributed beneath the pad. This implements the specified θJC = 50°C/W thermal resistance path. The board layout follows Analog Devices' guidance for RF and thermal grounding - ensuring case temperature remains within −40°C to +105°C operating limits during sustained 30 dBm average RF input, as validated in the ADRF5715-EVALZ test reports.

Can the ADRF5715-EVALZ be used to evaluate high-speed switching behavior of the ADRF5715?

Yes, the ADRF5715-EVALZ is explicitly designed to measure high-speed RF switching. It provides low-inductance, impedance-controlled paths for D0 control signals and calibrated SMA connectors for precise timing capture. Measured RF amplitude settling time is 6.5 µs to 0.1 dB (dual supply) and 23 µs (single supply), with RF phase settling to 1° in 2.3 µs (1 GHz, dual supply). These values are traceable to the ADRF5715-EVALZ's validated layout and match the ADRF5715 datasheet specifications under identical test conditions.