Analog Devices Inc. ADL5604-EVALZ

Overview

ADL5604-EVALZ from Analog Devices is a fully populated evaluation board for the ADL5604 700 MHz–2700 MHz GaAs HBT RF driver amplifier, supporting 1 W output power, 12.2 dB gain at 2630 MHz, and fast 50 ns power-down/up switching. It enables rapid characterization of linearity (OIP3 = 42.2 dBm), noise figure (4.6 dB), and ACPR/EVM performance in W-CDMA and LTE base station front-end designs.

For engineers reviewing the ADL5604-EVALZ datasheet, ADL5604-EVALZ layout, ADL5604-EVALZ test setup, or ADL5604-EVALZ signal integrity validation, this board provides pre-validated RF matching networks, thermal vias under the exposed paddle, decoupling capacitor placement per frequency band (748–2630 MHz), and dual-mode bias control (VBIAS/VCC2) for TDD system integration.

Technical Context

The ADL5604-EVALZ implements the ADL5604's internal active biasing architecture with external 5 V supply routing through L1 to RFOUT pins, while supporting both standalone operation and power-down via VBIAS pin control. Its PCB layout integrates frequency-specific matching components-including C1–C5, L1, L2, and Lout-per Analog Devices' published tables for 748 MHz, 880 MHz, 943 MHz, 1960 MHz, 2140 MHz, and 2630 MHz bands.

Thermal design follows JEDEC 4-layer board guidelines with nine 8-mil thermal vias in a 3×3 array beneath the exposed paddle, achieving θJA = 32.1°C/W and θJC = 6°C/W. The board includes dedicated ground planes on top and bottom layers tied to all GND pins (5,6,7,8,13,14,15,16) and the paddle for optimal RF grounding and heat dissipation.

Key Specifications

Availability

ADL5604-EVALZ is available at Aetrix Electronics and suitable for RF front-end prototyping, LTE/W-CDMA base station development, and TDD transceiver validation requiring stable component supply, repeatable measurement conditions, and production-ready layout practices.

Supply support for ADL5604-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 and power management solutions.

The ADL5604-EVALZ belongs to Analog Devices' RF amplifier evaluation platform family, designed specifically to accelerate time-to-test for broadband RF drivers used in wireless infrastructure, defense communications, and test equipment applications.

FAQ

What is the primary function of the ADL5604-EVALZ?

The ADL5604-EVALZ is a fully populated evaluation board for the ADL5604 RF driver amplifier. It provides a validated reference design enabling immediate RF performance testing-including gain, OIP3, P1dB, ACPR, and EVM-across 700–2700 MHz without custom layout. The ADL5604-EVALZ includes pre-installed matching components, thermal vias, and dual-bias control circuitry per the ADL5604 datasheet Rev. C.

Which frequency bands does the ADL5604-EVALZ support out-of-the-box?

The ADL5604-EVALZ supports six discrete frequency bands as specified in the ADL5604 datasheet: 748 MHz, 880 MHz, 943 MHz, 1960 MHz, 2140 MHz, and 2630 MHz. Each band uses dedicated surface-mount capacitors (C1–C5) and inductors (L1, L2, Lout) placed per Table 5 and Table 6, with microstrip lengths (λ1–λ5) optimized for impedance matching and minimal parasitic effects.

How is power-down functionality implemented on the ADL5604-EVALZ?

Power-down on the ADL5604-EVALZ is implemented via the VBIAS pin: applying 5 V enables the ADL5604 bias circuit, while grounding VBIAS disables it with 13 mA disable current. For ultra-low leakage (<1 μA), VCC2 is grounded simultaneously with VBIAS. The board includes R2/R4 jumpers and U2 (AD8009 op amp) to support active TTL/CMOS-compatible control signals, enabling 50 ns turn-off/turn-on transitions verified in Figures 34–35 of the ADL5604 datasheet.

What thermal design features are included on the ADL5604-EVALZ?

The ADL5604-EVALZ incorporates JEDEC-compliant thermal design: nine 8-mil thermal vias in a 3×3 array beneath the ADL5604's exposed paddle, plus continuous top- and bottom-layer ground planes connected to all eight GND pins (5,6,7,8,13,14,15,16). This achieves θJA = 32.1°C/W and θJC = 6°C/W, allowing sustained 1 W RF output without derating at +85°C ambient when mounted per recommended solder profile.

Can the ADL5604-EVALZ be used for ACPR and EVM measurements in W-CDMA systems?

Yes-the ADL5604-EVALZ is explicitly validated for W-CDMA Test Model 1-64 ACPR and EVM measurements per Figures 26–31 in the ADL5604 datasheet. At 2140 MHz, it delivers <1% EVM up to 18 dBm output and ≥65 dBc ACPR up to 12 dBm, meeting 3GPP requirements. Input/output connectors, decoupling, and grounding are optimized to preserve signal integrity during vector signal analyzer and spectrum analyzer testing.