Analog Devices Inc. 103706-HMC183QS24

Overview

HMC183QS24 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SP8T non-reflective RF switch operating from DC to 2 GHz, featuring 0.8 dB insertion loss at 1 GHz, integrated 3:8 decoder, and -5 V negative control logic. It serves as an antenna diversity or switched filter bank selector in basestation infrastructure with terminated outputs in OFF state.

For engineers reviewing the HMC183QS24 datasheet, HMC183QS24 pinout, HMC183QS24 application, or HMC183QS24 equivalent, key selection criteria include DC–2 GHz bandwidth, non-reflective architecture, 3-wire negative-bias control interface, and QSOP-24 package compatibility with SOIC-14 footprints.

Technical Context

The HMC183QS24 implements a monolithic GaAs MMIC SP8T switch with on-chip 3:8 decoder, reducing external control lines from 16 to 3 while maintaining independent RF path selection. Its non-reflective design terminates all unused RF ports to 50 Ω, ensuring stable impedance during switching transitions.

It operates with Vee = -5 V ±10%, control inputs referenced to Vee (–5 V to –4.2 V for HIGH, 0 to –3 V for LOW), and supports RF input power up to +26 dBm below 500 MHz and +29 dBm above - critical for basestation front-end robustness.

Key Specifications

Pinout & Package

24-lead QSOP package with copper alloy leadframe, Sn/Pb plating (HMC183QS24), MSL1 rating, and mandatory grounding of all ground leads to PCB RF ground plane per datasheet layout rules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SP8T RF switch applications.

Compared with HMC183QS24, HMC253QS24 removes the need for a –5 V rail but retains identical RF performance and pinout, while QM11036 extends frequency range and shrinks footprint at the cost of added control complexity and no on-die decoder.

Availability

HMC183QS24 is available at Aetrix Electronics and suitable for basestation infrastructure, antenna diversity systems, and switched filter bank designs requiring stable component supply and long-lifecycle support.

Supply support for HMC183QS24 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 semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for communications, industrial, and aerospace markets.

The HMC183QS24 belongs to Analog Devices' legacy Hittite RF switch product line, engineered specifically for high-isolation, low-loss, non-reflective switching in wireless infrastructure equipment.

FAQ

What is the operating frequency range of the HMC183QS24?

The HMC183QS24 operates from DC to 2.0 GHz, covering all major cellular bands including 700 MHz, 850 MHz, 1.8 GHz, 1.9 GHz, and 2.1 GHz. Its insertion loss remains ≤1.3 dB and isolation ≥26 dB across this full range, making it suitable for multiband basestation front-ends where broadband performance is essential. The HMC183QS24 maintains specified RF characteristics under –40°C to +85°C ambient conditions.

Does the HMC183QS24 require external termination resistors?

No, the HMC183QS24 is a non-reflective SP8T switch with on-die 50 Ω terminations for all RF outputs when OFF. This eliminates the need for external resistors or PCB layout accommodations for termination networks. All eight RF ports (RF1–RF8) present ≥10 dB return loss in OFF state across DC–2 GHz, ensuring stable impedance matching without additional components. The HMC183QS24 achieves this via integrated GaAs resistive elements within the MMIC die.

What control voltage levels are required for the HMC183QS24?

The HMC183QS24 requires negative control logic: HIGH = –5.0 V to –4.2 Vdc, LOW = 0 V to –3.0 Vdc, referenced to the Vee pin (–5 V ±10%). The control inputs (A, B, C) draw only ~5 µA in HIGH state and ~70 µA in LOW state, minimizing driver loading. The HMC183QS24 does not support TTL or CMOS-level positive logic without external level shifting, unlike its pin-compatible variant HMC253QS24.

Is the HMC183QS24 still in active production?

The HMC183QS24 is marked OBSOLETE in official Analog Devices documentation, but Aetrix Electronics maintains active inventory and offers last-time-buy support with full traceability and extended lifecycle coordination. Engineering samples, evaluation boards (e.g., 103706), and legacy design support remain available. The HMC183QS24 continues to serve in deployed basestation infrastructure where form-fit-function replacement is required, and Aetrix provides direct sourcing alternatives like HMC253QS24 when migration is planned.

What package type does the HMC183QS24 use, and how does it compare to SOIC?

The HMC183QS24 uses a 24-lead QSOP package measuring 5.3 mm × 7.5 mm, occupying the same PCB footprint as a standard 14-lead SOIC device. This allows direct placement in existing SOIC-14 land patterns with no layout changes - though all 24 pins must be correctly routed and grounded. The HMC183QS24's QSOP body uses low-stress molded plastic with silica/silicon impregnation and Sn/Pb leadframe plating, rated MSL1 for unlimited floor life.