Analog Devices Inc. EV1HMC8364LP6G

Overview

EV1HMC8364LP6G from Analog Devices is an evaluation board for the HMC8364 quadband GaAs MMIC VCO, enabling rapid prototyping of microwave frequency synthesizers operating from 18.10 GHz to 26.60 GHz across four overlapping bands. It supports RF output power up to +4 dBm, tuning sensitivity from 267–364 MHz/V, and single-sideband phase noise as low as −122 dBc/Hz at 1 MHz offset (Band 1). The board facilitates validation of local oscillator performance in test equipment and point-to-point radio designs.

For engineers reviewing the EV1HMC8364LP6G datasheet, EV1HMC8364LP6G pinout, EV1HMC8364LP6G application, or EV1HMC8364LP6G equivalent, this evaluation platform provides direct access to VTUNE, VC1–VC4, RFOUT, and VCB interfaces with optimized RF layout, integrated bias sequencing support, and compatibility with high-performance PLLs like the ADF41513.

Technical Context

The EV1HMC8364LP6G implements a complete reference design for the HMC8364 VCO, including matched 50 Ω RF routing from RFOUT to SMA, decoupled 5 V supply paths for VCC and VCB, and discrete 4:1 multiplexer control logic (e.g., ADG1604) for band selection. It incorporates recommended LDO regulators (ADM7150/LT3042) and VTUNE filtering per Analog Devices' application guidance.

Board-level features include break-before-make switching control, mute-capable buffer amplifier biasing via ADG854, and thermal management aligned with the HCP-40-1 package's θJC = 18.04 °C/W. Layout follows Rogers 4003 substrate guidelines with controlled-impedance microstrip traces and strategic placement of RC filter poles near the ADF41513 charge pump and HMC8364 VTUNE pins.

Key Specifications

Availability

EV1HMC8364LP6G is available at Aetrix Electronics and suitable for microwave synthesizer development, aerospace radar LO validation, and 5G/mmWave infrastructure testing requiring stable component supply and fast-turn evaluation capability.

Supply support for EV1HMC8364LP6G 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 microwave and mmWave signal generation.

The EV1HMC8364LP6G belongs to Analog Devices' Microwave & RF Evaluation Platform product line, designed specifically to accelerate time-to-test for wideband VCOs and PLL-based frequency synthesizers in defense, instrumentation, and wireless infrastructure.

FAQ

What is the primary function of the EV1HMC8364LP6G evaluation board?

The EV1HMC8364LP6G evaluation board is a dedicated hardware platform for characterizing and integrating the HMC8364LP6G quadband VCO. It provides fully routed RF, power, tuning, and band-select interfaces per Analog Devices' recommended layout and filtering practices, enabling immediate validation of phase noise, output power, and tuning linearity from 18.10 GHz to 26.60 GHz without custom PCB design. The EV1HMC8364LP6G supports direct connection to PLL synthesizers such as the ADF41513.

Does the EV1HMC8364LP6G support all four frequency bands of the HMC8364LP6G simultaneously?

No - the EV1HMC8364LP6G supports only one active VCO band at a time, consistent with the HMC8364LP6G's design requirement. Its onboard 4:1 multiplexer (e.g., ADG1604) enables clean break-before-make switching between VC1 (Band 1), VC2 (Band 2), VC3 (Band 3), and VC4 (Band 4). Simultaneous activation of multiple bands risks overstressing the shared cascode buffer amplifier and is explicitly prohibited in the HMC8364 datasheet and EV1HMC8364LP6G user guide.

What RF output connector and impedance does the EV1HMC8364LP6G use?

The EV1HMC8364LP6G uses a surface-mount SMA female connector directly mounted on the RFOUT trace, with a precisely controlled 50 Ω microstrip transmission line routed from the HMC8364LP6G's Pin 5 to the connector. Measured return loss exceeds 8 dB across all four bands (18.10–26.60 GHz), meeting the HMC8364LP6G's specified output match requirement and eliminating need for external matching networks.

Can the EV1HMC8364LP6G be used with PLL synthesizers other than the ADF41513?

Yes - while the EV1HMC8364LP6G reference design highlights integration with the ADF41513 due to its 1–26.5 GHz input bandwidth and programmable charge pump current, the board's VTUNE, RFOUT, and supply interfaces are generic. Engineers may substitute other high-frequency PLLs (e.g., LMX2594, ADF4377) provided they meet the HMC8364LP6G's tuning voltage range (1.0–13.5 V), drive capability (>1 mA), and noise floor requirements to preserve phase noise performance. The EV1HMC8364LP6G's filter network remains adaptable.

Is RF output muting supported on the EV1HMC8364LP6G, and how is it implemented?

Yes - the EV1HMC8364LP6G supports RF output muting via the VCB (Pin 8) supply line to the HMC8364LP6G's cascode buffer amplifier. An optional ADG854 switch is included in the board's schematic to disconnect VCB, reducing RFOUT power by ≥20 dB across all bands (e.g., −25 dBm typical in Band 4) without affecting long-term reliability. This muting function is fully accessible through the board's test points and digital control headers.