Analog Devices Inc. HMC553AG

Overview

HMC553AG from Analog Devices is a GaAs MMIC double-balanced mixer operating from 6 GHz to 14 GHz RF/LO and DC to 5 GHz IF, delivering ≤10 dB conversion loss, ≥21 dBm input IP3 (typ), and 37 dB LO-to-RF isolation (typ) in up/downconversion modes for microwave transceivers.

For engineers reviewing the HMC553AG datasheet, HMC553AG pinout, HMC553AG application, or HMC553AG equivalent, this bare-die mixer requires no DC bias, supports wide IF bandwidth to DC, and enables high-dynamic-range signal translation in compact RF front-ends where thermal management and wire-bond layout precision are critical.

Technical Context

The HMC553AG uses optimized GaAs MESFET balun structures to achieve ≥32 dB LO-to-RF and ≥28 dB LO-to-IF suppression, enabling clean spectral translation without external filtering. Its passive architecture eliminates DC bias circuitry and simplifies integration into high-frequency PCBs or hybrid modules.

It operates with LO drive levels from +9 dBm to +15 dBm and maintains stable conversion performance across −40°C to +85°C ambient, supporting both upper- and lower-sideband operation in downconverter and upconverter configurations.

Key Specifications

Pinout & Package

7-pad RoHS-compliant GaAs bare die (0.950 mm × 0.750 mm); die bottom must be attached directly to RF ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar double-balanced mixer applications.

Compared with HMC1048LP3E and QPC1006, the HMC553AG offers superior IF DC coupling, lowest conversion loss in its band, and smallest form factor-making it optimal for space-constrained, high-linearity microwave receivers where thermal interface control and wire-bond layout precision are design priorities.

Availability

HMC553AG is available at Aetrix Electronics and suitable for microwave VSAT radios, military EW systems, and point-to-point radio designs requiring stable component supply, consistent wafer lot traceability, and long-term availability for defense and telecom infrastructure programs.

Supply support for HMC553AG 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 aerospace, defense, communications, and instrumentation markets with precision signal processing solutions.

The HMC553AG belongs to Analog Devices' Hittite Microwave MMIC product line, engineered specifically for broadband microwave mixing in demanding RF front-ends where linearity, isolation, and minimal external component count are essential.

FAQ

What is the recommended LO drive level for optimal performance of the HMC553AG?

The HMC553AG achieves best linearity and conversion loss balance at +13 dBm LO drive. Performance remains functional from +9 dBm to +15 dBm, but IP3 degrades by ~2 dB below +11 dBm and conversion loss increases above +14 dBm due to device saturation. Always verify LO power at the pad using calibrated RF probes.

Can the HMC553AG operate with DC-coupled IF output?

Yes, the HMC553AG IF port is internally DC-coupled and supports true DC–5 GHz operation. However, the IF pad must not source or sink more than ±3 mA to avoid die malfunction. For AC-coupled applications, an external series capacitor is recommended to block DC while passing the target IF band.

How should the ground pads of the HMC553AG be connected in a hybrid module?

All four GND pads (1, 4, 5, 7) and the die bottom must be bonded directly to a low-inductance RF ground plane using eutectic die attach or conductive epoxy. Uneven grounding causes balun asymmetry, degrading LO-to-RF isolation and increasing conversion loss variation across frequency.

Does the HMC553AG require external matching components?

No-the HMC553AG is fully matched to 50 Ω at LO and RF ports and requires no external matching. The LO and RF pads are internally AC-coupled; only the IF port may need external DC blocking if DC coupling is not required. This simplifies layout and improves repeatability in high-volume assembly.

What is the maximum RF input power the HMC553AG can handle continuously?

The HMC553AG has an absolute maximum RF input power rating of +25 dBm. Sustained operation above +20 dBm is not recommended without thermal derating analysis, as junction temperature must remain below +175°C. At +25 dBm, continuous dissipation exceeds 414 mW, risking reliability degradation unless heatsinking is implemented.