Analog Devices Inc. EV1HMC424ALP3

Overview

EV1HMC424ALP3 from Hittite Microwave Corporation is an evaluation PCB designed to characterize the HMC424ALP3E - a GaAs MMIC 6-bit digital attenuator with 0.5 dB LSB, DC–13 GHz bandwidth, ±0.5 dB typical bit error, 31.5 dB max attenuation, and 9 mm² leadless SMT package. It supports RF signal conditioning in microwave radios and fiber-optic infrastructure.

For engineers reviewing the EV1HMC424ALP3 datasheet, EV1HMC424ALP3 pinout, EV1HMC424ALP3 application, or EV1HMC424ALP3 equivalent, this board enables rapid validation of HMC424ALP3E's insertion loss, return loss, switching speed (30 ns t_RISE), IIP3 (+42 dBm), and DC-coupled 50 Ω RF path under real-world biasing (V_EE = −5 V).

Technical Context

The EV1HMC424ALP3 implements a controlled RF test environment for the HMC424ALP3E IC, featuring SMA connectors (J1–J2), an 8-pin DC header (J3), 0.01 µF decoupling capacitors (C1), and optional 100 Ω series resistors (R1–R6) on control lines to suppress RF coupling. The PCB uses Rogers 4350 substrate for stable high-frequency performance.

It provides direct access to all 16 pins of the HMC424ALP3E, including RF input/output (pins 2, 11), six control voltage inputs (V6–V1, pins 4–9), V_EE (pin 15), ground (pins 1, 3, 10, 12, 13, 14, 16), and exposed paddle grounding - all aligned with Hittite's recommended land pattern and via-stitched ground plane design.

Key Specifications

Availability

EV1HMC424ALP3 is available at Aetrix Electronics and suitable for microwave radio development, fiber-optic transceiver qualification, and VSAT system prototyping requiring stable component supply and repeatable RF evaluation platforms.

Supply support for EV1HMC424ALP3 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

Hittite Microwave Corporation (acquired by Analog Devices in 2014) specialized in high-frequency RFICs, MMICs, and microwave components for defense, telecom, and instrumentation markets.

The EV1HMC424ALP3 belongs to Hittite's evaluation platform family for digital attenuators, engineered to accelerate design-in of broadband GaAs ICs in systems demanding precise RF gain/loss control from DC to Ka-band.

FAQ

What is the primary function of the EV1HMC424ALP3 evaluation board?

The EV1HMC424ALP3 evaluation board is a dedicated test platform for the HMC424ALP3E 6-bit GaAs digital attenuator. It provides SMA-connected RF paths, bias and control interfaces, and optimized RF grounding to validate insertion loss, return loss, switching speed, and linearity (IIP3) across DC–13 GHz - enabling rapid characterization without custom PCB design. The EV1HMC424ALP3 itself contains no active circuitry beyond interconnects and passive support elements.

Does the EV1HMC424ALP3 include the HMC424ALP3E IC?

Yes, the EV1HMC424ALP3 evaluation PCB includes one mounted HMC424ALP3E digital attenuator IC. The board is delivered fully assembled with the IC soldered to the Rogers 4350 substrate, SMA connectors installed, and decoupling capacitors (C1) and optional series resistors (R1–R6) populated per Hittite's reference layout. No additional assembly is required to begin testing the EV1HMC424ALP3.

What are the key RF layout features of the EV1HMC424ALP3?

The EV1HMC424ALP3 employs RF-optimized layout practices: 50 Ω microstrip traces between SMA connectors and HMC424ALP3E pins 2 and 11; full ground-plane stitching via ≥12 thermal vias under the exposed paddle and ground leads; and strategic placement of 0.01 µF capacitors at control-line entries. These features minimize parasitic inductance/capacitance and ensure measurement integrity up to 13 GHz - directly supporting the HMC424ALP3E's specified performance.

Can the EV1HMC424ALP3 be used for production-level testing?

Yes, the EV1HMC424ALP3 is qualified for production-level RF characterization due to its controlled impedance routing, calibrated ground structure, and use of Rogers 4350 substrate - all aligned with Hittite's application notes. Its design supports repeatable measurements of HMC424ALP3E parameters including bit error (±0.5 dB), switching time (30 ns), and IIP3 (+42 dBm), making it suitable for incoming inspection, burn-in verification, and final test in manufacturing environments.

What power supply requirements does the EV1HMC424ALP3 need to operate the HMC424ALP3E?

The EV1HMC424ALP3 requires a single −5 V DC supply (±10% tolerance) delivered via the 8-pin DC header (J3) to power the HMC424ALP3E's V_EE pin (pin 15). Control voltages (V1–V6) must swing between 0 V and −5 V, with logic-low current draw ≤35 µA per bit. The EV1HMC424ALP3 does not include onboard regulation - external precision −5 V sources meeting Hittite's absolute maximum ratings (−7 V max) are required for reliable operation of the HMC424ALP3E on the EV1HMC424ALP3.