Analog Devices Inc. HMC219BMS8GETR

Overview

HMC219BMS8GETR from Analog Devices is a GaAs MMIC fundamental double-balanced mixer operating from 2.5 GHz to 7.0 GHz, with 9 dB typical conversion loss, 40 dB typical LO–RF isolation, and 18 dBm typical input IP3. It functions as upconverter or downconverter in microwave radio front-ends requiring high linearity and broadband RF/IF coverage.

For engineers reviewing the HMC219BMS8GETR datasheet, HMC219BMS8GETR pinout, HMC219BMS8GETR application, or HMC219BMS8GETR equivalent, key selection criteria include its passive topology, 8-lead MINI_SO_EP package with exposed pad, dc-coupled LO/RF ports, and compatibility with IF bandwidths up to 3 GHz - critical for HiperLAN, U-NII, and ISM band transceivers.

Technical Context

The HMC219BMS8GETR implements a passive double-balanced topology using GaAs MESFET processes, eliminating need for external matching components or bias circuitry. Its optimized balun structures deliver high LO–RF (40 dB typ) and LO–IF (35 dB typ) isolation across the full 2.5–7.0 GHz RF band.

It supports both lower- and upper-sideband operation in upconversion and downconversion modes, with IF range spanning DC to 3 GHz. The device operates with 13 dBm LO drive and requires no power supply - simplifying integration into high-frequency signal chains where thermal stability and repeatability are essential.

Key Specifications

Pinout & Package

Package: 8-lead plastic surface-mount MINI_SO_EP (3 mm × 3 mm) with exposed thermal pad requiring RF/dc ground connection per JEDEC MS-012 variant RM-8.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fundamental mixer applications.

Compared with HMC219MS8GETR, the HMC219BMS8GETR adds RoHS compliance without performance trade-off; versus QPC1006, it delivers broader bandwidth, higher isolation, and superior linearity - justifying use in demanding microwave radios where spectral purity and dynamic range are critical.

Availability

HMC219BMS8GETR is available at Aetrix Electronics and suitable for microwave radios, HiperLAN/2 infrastructure, and ISM-band radar sensors requiring stable component supply, consistent RF performance across temperature, and long-term manufacturing continuity.

Supply support for HMC219BMS8GETR 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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving communications, industrial, and aerospace markets with precision signal processing solutions.

The HMC219BMS8GETR belongs to Analog Devices' Hittite Microwave MMIC product line, designed specifically for broadband microwave and millimeter-wave applications requiring high isolation, linearity, and integration in compact surface-mount packages.

FAQ

What is the recommended LO drive level for optimal performance of the HMC219BMS8GETR?

The HMC219BMS8GETR is characterized and optimized for 13 dBm LO drive level, delivering best-in-class conversion loss (9 dB typ), IP3 (18 dBm typ), and isolation. Operating below 11 dBm increases conversion loss; above 15 dBm risks compression and degrades linearity. The HMC219BMS8GETR does not require external LO amplification when driven by standard synthesizers meeting this specification.

Can the HMC219BMS8GETR be used for DC-coupled IF operation?

Yes, the HMC219BMS8GETR supports DC-coupled IF operation on Pin 5 (IF), but the IF port must not source or sink more than ±6 mA of current to prevent device malfunction or failure. For AC-coupled IF applications, a series capacitor sized for the target IF bandwidth is recommended - especially when operating above 100 MHz to avoid DC offset accumulation in downstream stages.

How does the exposed pad on the HMC219BMS8GETR package affect thermal and RF performance?

The exposed pad on the HMC219BMS8GETR must be connected to RF/dc ground via multiple thermal vias to the internal ground plane. This connection reduces thermal resistance (θJC = 92.5°C/W) and improves RF return loss and isolation. Per JEDEC JESD51-2, using a 3×3 array of 0.3 mm vias under the pad achieves optimal thermal impedance and maintains consistent RF performance across temperature.

Is the HMC219BMS8GETR suitable for both upconversion and downconversion?

Yes, the HMC219BMS8GETR is fully bidirectional: it functions as a downconverter (RF → IF) or upconverter (IF → RF) across its full 2.5–7.0 GHz RF range and DC–3 GHz IF bandwidth. Performance data in the datasheet includes verified measurements for both modes, including lower- and upper-sideband configurations - making the HMC219BMS8GETR suitable for full-duplex and TDD/FDD transceiver architectures.

What is the function of Pin 4 (NIC) on the HMC219BMS8GETR?

Pin 4 on the HMC219BMS8GETR is Not Internally Connected (NIC) and must remain electrically floating - no trace, solder mask, or ground connection should be made to this terminal. Leaving Pin 4 unconnected prevents parasitic coupling that could degrade LO–RF isolation or increase conversion loss, particularly above 5 GHz where layout parasitics become significant.