Analog Devices Inc. EV1HMC649ALP6

Overview

EV1HMC649ALP6 from Analog Devices is a GaAs MMIC evaluation board for the HMC649ALP6E 6-bit digital phase shifter, operating from 3 to 6 GHz with 5.625° LSB resolution, ±0.5 dB insertion loss variation, and 4° RMS phase error. It enables rapid characterization of beamforming, radar, and satellite communication RF front-end timing paths.

For engineers reviewing the EV1HMC649ALP6 datasheet, EV1HMC649ALP6 pinout, EV1HMC649ALP6 application, or EV1HMC649ALP6 equivalent, this evaluation PCB supports full RF performance validation-including S-parameter measurement, phase-state linearity, and thermal stability-using standard SMA connectors and Rogers 4350 substrate.

Technical Context

The EV1HMC649ALP6 implements a fixed-layout RF evaluation platform for the HMC649ALP6E phase shifter IC, featuring DC-coupled 50 Ω RFIN/RFOUT paths, dedicated Vdd (Pin 1) and Vss (Pin 25) bias routing, and six TTL-compatible control inputs (BIT1–BIT6 on Pins 22–24, 26–28). All ground leads and the exposed paddle are directly connected to a continuous top-layer ground plane via multiple vias.

Designed per RF best practices, the board uses Rogers 4350 dielectric (ε_r = 3.48), 50 Ω microstrip traces, and includes two 1000 pF 0402 bypass capacitors (C1, C2) for stable +5 V and −5 V supply filtering. It supports operation across −40 °C to +85 °C and requires heatsinking for sustained high-power testing.

Key Specifications

Availability

EV1HMC649ALP6 is available at Aetrix Electronics and suitable for radar transceiver development, satellite modem prototyping, EW receiver calibration, and phased-array antenna validation requiring stable component supply and traceable RF evaluation hardware.

Supply support for EV1HMC649ALP6 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, serving aerospace, defense, communications, and instrumentation markets with precision signal processing solutions.

The EV1HMC649ALP6 belongs to Analog Devices' Hittite Microwave evaluation board portfolio, designed specifically to accelerate RF system-level validation of GaAs MMIC phase shifters used in electronically scanned arrays and adaptive RF front-ends.

FAQ

What is the primary function of the EV1HMC649ALP6 evaluation board?

The EV1HMC649ALP6 evaluation board is a dedicated RF test platform for the HMC649ALP6E 6-bit digital phase shifter. It provides calibrated SMA interfaces, proper bias distribution, and optimized grounding to enable accurate measurement of insertion loss, phase error, return loss, and harmonic distortion across the 3–6 GHz band. The EV1HMC649ALP6 does not contain active circuitry beyond passive routing and bypassing.

Does the EV1HMC649ALP6 support both positive and negative supply voltages required by the HMC649ALP6E?

Yes. The EV1HMC649ALP6 includes a 16-pin header (J3) configured to deliver +5 V to Pin 1 (Vdd) and −5 V to Pin 25 (Vss) of the HMC649ALP6E, matching the IC's specified bias conditions. Two 1000 pF 0402 capacitors (C1, C2) provide local high-frequency decoupling for each rail, ensuring stable operation during phase-state switching.

Can the EV1HMC649ALP6 be used without external heatsinking?

The EV1HMC649ALP6 board itself has no active thermal generation, but the mounted HMC649ALP6E IC can dissipate significant power under high RF input levels (up to +31 dBm P1dB). While short-duration lab testing may proceed without heatsinking, Analog Devices recommends mounting the EV1HMC649ALP6 to an appropriate heatsink for sustained operation above +20 dBm to maintain junction temperature within −40 °C to +85 °C limits.

What RF substrate and impedance control does the EV1HMC649ALP6 use?

The EV1HMC649ALP6 uses Rogers 4350B laminate with controlled 50 Ω microstrip routing for RFIN and RFOUT signal paths. Trace geometry and layer stack-up are optimized to minimize dispersion and maintain impedance match across 3–6 GHz. Ground vias adjacent to RF lines and the exposed paddle ensure low-inductance return paths critical for phase accuracy.

Is the EV1HMC649ALP6 compatible with other HMC649 variants such as HMC649LP6CE?

No. The EV1HMC649ALP6 is specifically laid out for the HMC649ALP6E package (28-lead QFN, 6 × 6 mm), including exact pad dimensions, via placement, and pin-to-pin routing. The HMC649LP6CE uses a different footprint and bias configuration; mechanical or electrical substitution on the EV1HMC649ALP6 is not supported and may cause damage or invalid measurements.