Analog Devices Inc. ADL5544-EVALZ

Overview

ADL5544-EVALZ from Analog Devices is a fully populated, RoHS-compliant evaluation board for the ADL5544 30 MHz to 6 GHz RF/IF gain block amplifier. It enables rapid characterization of gain, OIP3 (34.9 dBm at 900 MHz), P1dB (17.6 dBm), noise figure (2.9 dB), and S-parameter performance across frequency bands. Designed for lab validation of broadband RF front-end stages in wireless infrastructure and test equipment.

For engineers reviewing the ADL5544-EVALZ datasheet, ADL5544-EVALZ setup guide, ADL5544-EVALZ layout, or ADL5544-EVALZ compatibility with ADL5544 amplifier ICs, this board provides verified 50 Ω input/output matching, configurable biasing (5 V supply), and optimized component selection (C1/C2 = 100 pF default; L1 = 100 nH) for 500 MHz–4 GHz operation - critical for repeatable small-signal and linearity measurements.

Technical Context

The ADL5544-EVALZ implements the ADL5544's single-ended RF gain block architecture on a 4-layer FR-4 PCB with controlled-impedance 50 Ω microstrip traces. It supports three frequency-band configurations via jumper-selectable components: 100–500 MHz (C1/C2 = 100 nF, L1 = 1000 nH), 500 MHz–4 GHz (default, C1/C2 = 100 pF, L1 = 100 nH), and 4–6 GHz (C1/C2 = 100 pF, L1 = 12 nH, plus 0.1 pF matching caps).

Thermal design centers on soldering the ADL5544's exposed pad (Pin 2) to a low-impedance ground plane, achieving θ_JA = 53°C/W per JEDEC JESD51 simulation. The board includes decoupling network (100 pF / 1 nF / 10 µF) and dc-blocking capacitors (C1, C2) as specified in the ADL5544 datasheet for stable bias and signal integrity.

Key Specifications

Availability

ADL5544-EVALZ is available at Aetrix Electronics and suitable for RF design validation, production test fixture development, and wireless infrastructure prototyping requiring stable component supply, traceable sourcing, and documented reference layouts.

Supply support for ADL5544-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.

The ADL5544-EVALZ belongs to Analog Devices' RF Amplifier Evaluation Platform product line, engineered to accelerate time-to-test for broadband gain blocks used in cellular infrastructure, spectrum analyzers, and defense communications systems.

FAQ

What is the primary purpose of the ADL5544-EVALZ?

The ADL5544-EVALZ is a ready-to-use evaluation board designed specifically for characterizing the ADL5544 RF gain block. It provides verified 50 Ω input/output matching, configurable biasing, and optimized component selection to enable accurate measurement of gain, OIP3, P1dB, noise figure, and S-parameters across 30 MHz–6 GHz without custom PCB design. Engineers use ADL5544-EVALZ to validate RF front-end performance before integration into final systems.

Does ADL5544-EVALZ support operation below 100 MHz?

Yes, ADL5544-EVALZ supports operation down to 30 MHz using an external feedback network (RF = 1500 Ω, CF = 10 nF) between RFIN and RFOUT, as documented in the ADL5544 datasheet Figure 35. This configuration ensures stability and preserves gain flatness and linearity at low frequencies - a capability confirmed in Figures 36–38 of the ADL5544 datasheet Rev. A.

How does ADL5544-EVALZ handle thermal management for the ADL5544 device?

ADL5544-EVALZ implements thermal management by soldering the ADL5544's exposed pad (which encompasses Pin 2 and the package tab) directly to a large internal ground plane. This achieves a measured junction-to-air thermal resistance (θ_JA) of 53°C/W, as validated on the evaluation board per JEDEC JESD51 standards - ensuring reliable operation at full 55 mA quiescent current and preventing thermal derating during extended RF testing.

Can ADL5544-EVALZ be used for W-CDMA ACPR testing?

Yes, ADL5544-EVALZ is suitable for W-CDMA adjacent channel power ratio (ACPR) testing. When configured per datasheet recommendations, the ADL5544 on ADL5544-EVALZ achieves −80 dBc ACPR at −7 dBm output power and −63 dBc at 0 dBm for a 2140 MHz carrier (Test Model 1-64), as shown in Figure 39 of the ADL5544 datasheet Rev. A - enabling accurate linearity validation for cellular base station applications.

What are the key configurable elements on ADL5544-EVALZ for different frequency bands?

ADL5544-EVALZ supports three frequency-band configurations via discrete component placement: (1) 100–500 MHz uses 100 nF AC coupling caps (C1/C2) and 1000 nH bias inductor (L1); (2) 500 MHz–4 GHz (default) uses 100 pF caps and 100 nH inductor; (3) 4–6 GHz adds 0.1 pF matching caps (C7/C8) and uses 12 nH inductor. These configurations are explicitly defined in Table 6 of the ADL5544 datasheet Rev. A.