Analog Devices Inc. EV1HMC199AMS8

Overview

EV1HMC199AMS8 from Analog Devices is an evaluation PCB designed to validate the HMC199AMS8 dual SPDT GaAs RF switch in DC–2.5 GHz bypass applications. It hosts the 8-lead MSOP-packaged HMC199AMS8, supports 50 Ω RF signal paths, integrates SMA connectors (J1–J4), DC pins (J5–J7), 330 pF DC-blocking capacitors (C1–C4), and optional 100 Ω isolation resistors (R1–R2) on a Rogers 4350 substrate.

For engineers reviewing the EV1HMC199AMS8 datasheet, EV1HMC199AMS8 pinout, EV1HMC199AMS8 application, or EV1HMC199AMS8 equivalent, this board enables rapid characterization of insertion loss (<0.6 dB @ 2.5 GHz), isolation (≥17 dB), switching speed (tON/tOFF ≤ 40 ns), and +25 dBm 1-dB compression performance under 0/+5 V control logic - critical for cellular base station LNA/filter bypass validation.

Technical Context

The EV1HMC199AMS8 is a dedicated evaluation platform-not a component-and provides full RF access to all four ports (RFC1, RFC2, RF1, RF2) of the HMC199AMS8 switch. Its Rogers 4350 PCB ensures stable 50 Ω impedance matching and low-loss transmission up to 2.5 GHz, with SMA connectors enabling direct network analyzer or signal generator interfacing.

It implements the recommended application circuit per HMC199AMS8 datasheet: DC-blocking capacitors at each RF port, CMOS/TTL-compatible control inputs (A/B), and grounding per MSOP thermal pad and leadframe requirements. No onboard biasing or level-shifting circuitry is included-users supply external 0/+5 V control and RF stimulus.

Key Specifications

Availability

EV1HMC199AMS8 is available at Aetrix Electronics and suitable for RF front-end validation, cellular base station prototyping, and ISM-band transceiver development requiring stable component supply and repeatable measurement conditions.

Supply support for EV1HMC199AMS8 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 communications, industrial, automotive, and instrumentation markets with precision signal processing solutions.

The EV1HMC199AMS8 belongs to Analog Devices' Hittite Microwave evaluation board portfolio, engineered specifically to accelerate RF switch characterization and reduce time-to-test for dual SPDT GaAs bypass applications in wireless infrastructure.

FAQ

What is the primary purpose of the EV1HMC199AMS8 evaluation board?

The EV1HMC199AMS8 evaluation board is a dedicated test platform for the HMC199AMS8 dual SPDT GaAs RF switch. It enables engineers to measure real-world RF performance-including insertion loss, isolation, return loss, and switching speed-under controlled 50 Ω conditions using standard SMA instrumentation. The board does not function as a standalone product but serves exclusively to validate the HMC199AMS8 in DC–2.5 GHz bypass configurations.

Does the EV1HMC199AMS8 include power regulation or level-shifting circuitry?

No, the EV1HMC199AMS8 does not include power regulation or level-shifting circuitry. It provides direct access to the HMC199AMS8's control inputs (A and B) via J5–J7, requiring external 0/+5 V or 0/+3 V logic sources. Users must supply appropriate DC bias and ensure proper grounding per the HMC199AMS8 datasheet; no onboard voltage translation is implemented.

What RF substrate material is used on the EV1HMC199AMS8, and why is it specified?

The EV1HMC199AMS8 uses Rogers 4350 laminate, selected for its stable dielectric constant (ε_r ≈ 3.48) and low dissipation factor (tan δ ≈ 0.0037) across DC–2.5 GHz. This ensures minimal phase distortion and accurate S-parameter extraction during vector network analyzer measurements-critical for validating the HMC199AMS8's <0.6 dB insertion loss and ≥17 dB isolation specifications.

Can the EV1HMC199AMS8 be used to evaluate both HMC199AMS8 and HMC199AMS8E variants?

Yes, the EV1HMC199AMS8 is compatible with both the HMC199AMS8 (Sn/Pb finish) and HMC199AMS8E (100% matte Sn, RoHS-compliant) variants. Both share identical MSOP-8 package dimensions, pinout, electrical interface, and thermal requirements. The board's layout and grounding scheme meet MSL1 reflow profiles for both versions, including peak temperatures of 235 °C (HMC199AMS8) and 260 °C (HMC199AMS8E).

Are the 330 pF DC-blocking capacitors on the EV1HMC199AMS8 fixed or user-replaceable?

The 330 pF DC-blocking capacitors (C1–C4) are mounted as 0402 chip components and are user-replaceable. They are provided as a default value suitable for operation down to ~10 MHz; however, the datasheet explicitly states that capacitor value must be selected based on the lowest frequency of operation. Engineers may desolder and replace them with values optimized for sub-1 GHz, cellular, or ISM-band use cases.