Analog Devices Inc. ADL5801-EVALZ

Overview

ADL5801-EVALZ from Analog Devices is an evaluation board for the ADL5801 broadband active mixer IC, supporting RF/LO/IF operation from 10 MHz to 6 GHz in upconverter and downconverter configurations. It enables characterization of key mixer performance metrics including input IP3 (28.5 dBm at 900 MHz), SSB noise figure (9.75 dB), power conversion gain (1.8 dB), and LO drive sensitivity (0 dBm), with bias-adjustable operation via VSET and integrated RF detector functionality.

For engineers reviewing the ADL5801-EVALZ datasheet, ADL5801-EVALZ pinout, ADL5801-EVALZ application, or ADL5801-EVALZ equivalent, this board provides validated reference design implementation, calibrated RF/LO/IF port matching networks, on-board bias control circuitry, detector feedback path, and thermal management for repeatable high-frequency mixer evaluation under real-world signal conditions.

Technical Context

The ADL5801-EVALZ implements a fully populated, impedance-matched layout for the ADL5801 24-lead LFCSP mixer, featuring Mini-Circuits TC1-1-13M+ (RF/LO) and TC4-1W+ (IF) baluns, choke-based DC bias injection, and configurable VSET/ENBL/DETO routing. It supports both low-side and high-side LO injection and accommodates differential RF/LO inputs and differential IF outputs with 200 Ω differential load termination.

Board-level design includes 50 Ω microstrip traces with controlled impedance, ground-plane isolation between RF/LO/IF sections, exposed paddle soldering to thermal pad, and test points for all critical nodes (RFIN, LOIN, IFON, VSET, DETO). The layout follows Analog Devices' recommended PCB stack-up and decoupling practices per Rev. F datasheet Section "Evaluation Board".

Key Specifications

Availability

ADL5801-EVALZ is available at Aetrix Electronics and suitable for RF front-end validation, cellular base station receiver prototyping, radio link downconverter development, and instrumentation-grade frequency conversion testing requiring stable component supply and traceable evaluation hardware.

Supply support for ADL5801-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, microwave, and precision signal chain solutions.

The ADL5801-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform product line, designed specifically to accelerate time-to-test for high-linearity active mixers used in demanding wireless infrastructure and test equipment applications.

FAQ

What is the primary function of the ADL5801-EVALZ?

The ADL5801-EVALZ is a fully assembled evaluation board for the ADL5801 active mixer IC. Its primary function is to enable rapid, repeatable characterization of the ADL5801's RF performance-including conversion gain, input IP3, noise figure, and spur suppression-across its full 10 MHz to 6 GHz operating range using standardized balun-based interface networks and configurable bias control.

Does the ADL5801-EVALZ support both upconversion and downconversion modes?

Yes, the ADL5801-EVALZ supports both upconversion and downconversion modes. The board's layout and balun selection (TC1-1-13M+ for RF/LO, TC4-1W+ for IF) are optimized for low-side LO injection in downconversion, but high-side LO operation is also supported by reconfiguring the LO input path and adjusting LO frequency planning per the ADL5801 datasheet's Applications Information section.

What baluns are installed on the ADL5801-EVALZ board?

The ADL5801-EVALZ board is shipped with Mini-Circuits TC1-1-13M+ baluns on both RF and LO ports, and a TC4-1W+ balun on the IF port. These components provide broadband 50 Ω to differential conversion and are specified for use across the ADL5801's full frequency range, as documented in the "Evaluation Board" section of the ADL5801 Rev. F datasheet.

How is bias control implemented on the ADL5801-EVALZ?

Bias control on the ADL5801-EVALZ is implemented via three dedicated test points and onboard resistor networks: VSET adjusts mixer core bias (2.0–5.0 V range), ENBL enables/disables internal bias circuitry (0–1.8 V logic low to enable), and DETO routes the integrated RF detector output for adaptive bias feedback. All signals are accessible without soldering.

Is thermal management addressed on the ADL5801-EVALZ board?

Yes, thermal management is explicitly addressed: the ADL5801 IC's exposed paddle is soldered directly to a large internal copper ground plane on the ADL5801-EVALZ board, achieving a measured θJA of 26.5°C/W as verified in the ADL5801 datasheet's Absolute Maximum Ratings table. This ensures stable operation during extended high-power RF testing.