Analog Devices Inc. ADL5330-EVALZ

Overview

ADL5330-EVALZ from Analog Devices is an evaluation board for the ADL5330 voltage-controlled variable gain amplifier (VGA)/attenuator, supporting 10 MHz to 3 GHz RF/IF signal paths with −34 dB to +22 dB gain control range at 900 MHz, 20 mV/dB linear-in-dB scaling, and 50 Ω single-ended or differential I/O. It enables rapid characterization of transmit/receive power control in WCDMA and CDMA2000 systems.

For engineers reviewing the ADL5330-EVALZ datasheet, ADL5330-EVALZ pinout, ADL5330-EVALZ application, or ADL5330-EVALZ equivalent, this page provides verified layout details, balun interface guidance, gain control voltage calibration, RF input/output matching networks, and power-down timing validation - all specific to the ADL5330-EVALZ board implementation.

Technical Context

The ADL5330-EVALZ implements the ADL5330 IC in a fully populated, 4-layer FR-4 PCB layout optimized for broadband 50 Ω operation using M/A-COM ETC1-1-13 1:1 baluns at both input and output. It supports single-supply 5 V operation with decoupling per pin (100 pF + 0.1 μF), 120 nH RF chokes for OPHI/OPLO biasing, and dc-blocking capacitors on all RF paths.

Board-level design includes dedicated test points for GAIN (0–1.4 V), ENBL (logic high/low), VREF (1.5 V), and all supply pins (VPS1/VPS2). The layout incorporates thermal vias under the ADL5330 LFCSP-24 exposed pad and maintains controlled impedance traces for INHI/INLO and OPHI/OPLO differential pairs.

Key Specifications

Availability

ADL5330-EVALZ is available at Aetrix Electronics and suitable for RF front-end development, cellular base station prototyping, and wireless infrastructure testing requiring stable component supply, traceable evaluation hardware, and documented reference layouts.

Supply support for ADL5330-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 design centers worldwide and manufacturing in proprietary semiconductor processes.

The ADL5330-EVALZ belongs to Analog Devices' RF & Microwave Evaluation Platform family, designed specifically to accelerate time-to-test for voltage-controlled gain blocks used in cellular infrastructure, defense radar, and broadband communications systems.

FAQ

What is the purpose of the ADL5330-EVALZ evaluation board?

The ADL5330-EVALZ is a fully assembled and tested evaluation platform for the ADL5330 voltage-controlled VGA/attenuator. It enables engineers to characterize gain control linearity, noise floor, OIP3, and power-down behavior across 10 MHz–3 GHz without custom PCB design. All critical signals - including GAIN, ENBL, VREF, and RF I/O - are routed to SMA connectors or test points for direct instrumentation access on the ADL5330-EVALZ.

Which baluns are installed on the ADL5330-EVALZ board?

The ADL5330-EVALZ uses M/A-COM ETC1-1-13 1:1 transmission-line transformer baluns at both input and output, as specified in the ADL5330 datasheet Rev. B for broadband 50 Ω matching. These baluns support the full 10 MHz–3 GHz frequency range and are soldered directly onto the ADL5330-EVALZ board with optimized grounding and trace length control.

How is the ADL5330 powered on the ADL5330-EVALZ board?

The ADL5330-EVALZ supplies power via a single 5 V source applied to the board's VPOS header. This voltage is distributed to all VPS1 and VPS2 pins of the ADL5330 IC through individual 100 pF + 0.1 μF decoupling networks. The board includes test points for each supply rail to verify voltage stability and ripple under varying gain conditions on the ADL5330-EVALZ.

Can the ADL5330-EVALZ be used for single-ended RF interfaces?

Yes - the ADL5330-EVALZ supports single-ended operation via its differential I/O architecture. Users may drive INHI while terminating INLO to ground (or vice versa), and take RF output from either OPHI or OPLO with appropriate biasing. The board's layout preserves flexibility for both configurations, and the ADL5330-EVALZ documentation includes recommended component changes for single-ended use cases.

What is the function of the exposed thermal pad on the ADL5330-EVALZ?

The exposed pad beneath the ADL5330 IC on the ADL5330-EVALZ is electrically and thermally connected to the board's internal ground plane via an array of thermal vias. This ensures reliable heat dissipation during high-gain, high-power operation and maintains junction temperature within the −40°C to +85°C specification. Solder mask openings and via placement follow Analog Devices' LFCSP layout guidelines on the ADL5330-EVALZ.