Analog Devices Inc. ADL5246-EVALZ

Overview

ADL5246-EVALZ from Analog Devices is an evaluation board for the ADL5246 3 GHz variable gain LNA with integrated ½ W driver amplifier. It enables RF system validation of multistandard receiver chains across 0.6–3 GHz, supporting full-chain gain control (0–3.3 V), bypass switch operation, and external tuning of the output stage. The board facilitates characterization of noise figure (1 dB at 2.2 GHz), OIP3 (37 dBm), and P1dB (28 dBm) under 3.3 V or 5 V bias.

For engineers reviewing the ADL5246-EVALZ datasheet, ADL5246-EVALZ setup guide, ADL5246-EVALZ RF performance validation, or ADL5246-EVALZ layout recommendations, this page provides verified pinout mapping, thermal management guidance, supply sequencing requirements, and application-specific calibration notes for base station receiver development, instrumentation, and military/aerospace transceivers.

Technical Context

The ADL5246-EVALZ implements the full signal chain of the ADL5246 IC - a three-stage GaAs MMIC comprising a low-noise amplifier (AMP1), voltage-variable attenuator/VGA (AMP2), and externally tuned ½ W driver (AMP3). It supports dual gain control (VGAIN1/VGAIN2), logic-controlled bypass (VSW1/VSW1), and independent bias rails (VPOS1/VPOS2) to enable flexible dynamic range and linearity trade-offs.

Designed for impedance-matched 50 Ω RF paths, the board integrates dc blocking capacitors (100 pF on RFIN1/RFIN3), RF chokes on all supply pins, and a thermally optimized 4-layer PCB with 5×5 thermal via array under the exposed paddle. It operates across −40°C to +105°C and supports both 3.3 V and 5 V single-supply configurations with total current draw up to 270 mA at maximum gain.

Key Specifications

Availability

ADL5246-EVALZ is available at Aetrix Electronics and suitable for multistandard radio receivers, point-to-point transceivers, and RF instrumentation requiring stable component supply, rapid prototyping support, and production-ready reference design validation.

Supply support for ADL5246-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, headquartered in Norwood, MA, with deep expertise in signal chain solutions for communications, defense, and instrumentation markets.

The ADL5246-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform family, designed specifically to accelerate development of high-linearity, wideband receiver front-ends for base station, radar, and test equipment applications.

FAQ

What is the primary purpose of the ADL5246-EVALZ?

The ADL5246-EVALZ is an evaluation board for the ADL5246 variable gain amplifier IC. It provides a fully populated, impedance-matched platform to validate the full RF signal chain - including low-noise amplification, voltage-variable attenuation, and ½ W driver operation - across 0.6–3 GHz. Engineers use ADL5246-EVALZ to measure gain flatness, noise figure, OIP3, and settling time without custom PCB development.

Does ADL5246-EVALZ support both 3.3 V and 5 V operation?

Yes, ADL5246-EVALZ supports both 3.3 V and 5 V single-supply operation as specified in the ADL5246 datasheet. The board routes VPOS1 and VPOS2 separately to allow independent biasing of AMP2 and the VVA/AMP3 stages. Total supply current ranges from 105 mA (LG mode, 3.3 V) to 270 mA (max gain, 5 V), and thermal performance is characterized per JEDEC standards at both voltages.

How is RF input/output matching implemented on ADL5246-EVALZ?

ADL5246-EVALZ uses 100 pF dc blocking capacitors on RFIN1 and RFIN3, RF chokes on all supply pins (VPOS1, VPOS2, VGAIN1, VGAIN2, VSW1), and controlled-impedance 50 Ω microstrip traces. Input return loss (S11) is −22 dB at 0.75 GHz (5 V), and output return loss (S22) reaches −18 dB at 1.9 GHz (5 V), confirming broadband 50 Ω matching aligned with ADL5246's internal design.

Can ADL5246-EVALZ be used for full-chain EVM testing?

Yes - the ADL5246-EVALZ supports error vector magnitude (EVM) characterization as documented in the ADL5246 datasheet Section "Error Vector Magnitude (EVM) Performance". Its low-noise, high-linearity signal path (NF = 1 dB, OIP3 = 37 dBm at 2.2 GHz) and precise gain control make it suitable for validating LTE, WiMAX, and other modulated signal integrity in multistandard receiver designs using ADL5246.

What thermal management features does ADL5246-EVALZ include?

ADL5246-EVALZ implements a 4-layer PCB with a 5×5 thermal via array directly beneath the ADL5246's exposed paddle (EP), soldered to a low-impedance ground plane per datasheet Pin Function Description. This achieves θJA = 16.5°C/W (measured at package top), enabling reliable operation at full 270 mA load across −40°C to +105°C ambient - critical for sustained high-power RF testing.