Analog Devices Inc. HMC1048ALC3BTR-R5

Overview

HMC1048ALC3BTR-R5 from Analog Devices is a passive monolithic microwave integrated circuit (MMIC) double-balanced downconverter IC operating from 2.25 GHz to 18 GHz at RF, dc to 4 GHz at IF, and requiring 9–17 dBm LO drive. It delivers 10–14 dB conversion loss, 20 dBm input IP3, and >25 dB LO-to-RF isolation. Used in Ka-band transponder front-ends for satellite communications.

For engineers reviewing the HMC1048ALC3BTR-R5 datasheet, HMC1048ALC3BTR-R5 pinout, HMC1048ALC3BTR-R5 application, or HMC1048ALC3BTR-R5 equivalent, key selection criteria include its 3 mm × 3 mm ceramic LCC package, no-bias operation, wide IF bandwidth supporting dc-coupled baseband interfaces, and verified performance across −40°C to +85°C.

Technical Context

This double-balanced mixer uses a passive diode-ring architecture with internal 50 Ω ac-coupling on RF and LO ports, and dc-coupling on the IF port. Its balanced topology suppresses even-order harmonics and provides inherent LO leakage rejection.

It operates without external bias or matching components-RF, LO, and IF ports are impedance-matched to 50 Ω across full frequency bands. Thermal management relies on soldering the exposed pad directly to PCB ground plane, with θJC = 383°C/W and θJA = 120°C/W under JEDEC natural convection conditions.

Key Specifications

Pinout & Package

Package: 3 mm × 3 mm, 12-terminal ceramic leadless chip carrier (LCC), E-12-4 package with exposed thermal pad (EPAD) requiring connection to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HMC1048ALC3BTR-R5, HMC1047ALC3BTR-R5 trades bandwidth for marginally lower cost in sub-12 GHz systems, while QPC1006 introduces bias dependency to achieve comparable conversion loss at reduced LO drive-but sacrifices the passive simplicity and dc-coupled IF capability critical for zero-IF architectures.

Availability

HMC1048ALC3BTR-R5 is available at Aetrix Electronics and suitable for Ka-band transponders, point-to-multipoint radios, and military radar receivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HMC1048ALC3BTR-R5 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 precision instrumentation, communications, and defense markets since 1965.

The HMC1048ALC3BTR-R5 belongs to Analog Devices' Hittite Microwave MMIC mixer product line, engineered for broadband, high-isolation downconversion in demanding RF front-ends where passive operation and thermal robustness are essential.

FAQ

What is the maximum RF input power rating for the HMC1048ALC3BTR-R5?

The HMC1048ALC3BTR-R5 supports a maximum RF input power of 16 dBm when LO power is 18 dBm, per Absolute Maximum Ratings. Exceeding this level risks permanent damage to the diode ring structure. For reliable operation, design RF input levels ≤10 dBm to maintain linearity and avoid compression effects observed above P1dB (10–11 dB).

Does the HMC1048ALC3BTR-R5 require external dc blocking capacitors on the RF or LO ports?

No. The HMC1048ALC3BTR-R5 features internal ac-coupling on both RF and LO ports, eliminating the need for external dc blocking capacitors. This simplifies layout and preserves 50 Ω impedance match across 2.25–18 GHz. External capacitors are only required on the IF port if dc coupling is undesirable.

Can the HMC1048ALC3BTR-R5 operate with IF frequencies down to dc?

Yes. The IF port is internally dc-coupled, enabling true zero-IF operation. However, the IF terminal must not source or sink more than ±6 mA to prevent die malfunction. For dc-coupled use, ensure downstream circuitry complies with this current limit and avoids voltage offsets exceeding device specifications.

What is the recommended PCB grounding strategy for the HMC1048ALC3BTR-R5's exposed pad?

The exposed pad (EPAD) of the HMC1048ALC3BTR-R5 must be soldered to a solid, low-impedance RF and dc ground plane using multiple thermal vias. Per datasheet guidance, this connection is mandatory for thermal conduction (θJC = 383°C/W) and RF return path integrity-failure to do so degrades isolation, increases junction temperature, and risks parametric shift.

How does LO drive level affect conversion loss in the HMC1048ALC3BTR-R5?

Conversion loss in the HMC1048ALC3BTR-R5 decreases with increasing LO drive, stabilizing between 13–17 dBm. At 9 dBm LO, conversion loss rises ~1–2 dB versus 13 dBm; at 17 dBm, it reaches minimum value but risks accelerated aging. Optimal LO drive is 13 dBm for best balance of loss, IP3, and reliability across temperature.