Analog Devices Inc. 101672-HMC182S14

Overview

HMC182S14 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SP4T non-reflective switch operating from DC to 2 GHz, featuring 0.8 dB typical insertion loss, 45 dB isolation at 0.5 GHz, and integrated 2:4 decoder logic requiring only two control lines. It is used in antenna diversity and switched filter bank applications in 800–1000 MHz basestations.

For engineers reviewing the HMC182S14 datasheet, HMC182S14 pinout, HMC182S14 application, or HMC182S14 equivalent, key selection criteria include its -5 V negative bias operation, SOIC-14 package compatibility, non-reflective "off-state" return loss ≥17 dB, and suitability for RF channel multiplexing up to 2 GHz with TTL-compatible control interface.

Technical Context

The HMC182S14 implements a monolithic GaAs MMIC architecture with on-die termination and integrated 2:4 decoder, eliminating external logic and reducing control line count from 4–8 to just two (A/B). Its non-reflective design ensures low VSWR in off-state paths across DC–2 GHz.

It operates with Vee = -5 V ±10%, control inputs compatible with TTL logic when Vee is tied to the gate's negative supply, and delivers 24 dBm IIP3 at 0.5–2.0 GHz under 7 dBm/tone test conditions. Thermal resistance is 123 °C/W on the insertion loss path.

Key Specifications

Pinout & Package

Package: 14-lead SOIC (Small Outline Integrated Circuit), RoHS-compliant variant marked HMC182S14E; body material is low-stress injection-molded plastic with silica/silicon impregnation; leadframe plating is Sn/Pb (HMC182S14) or 100% matte tin (HMC182S14E); MSL1 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SP4T RF switch applications.

Compared with HMC165S14 and HMC241QS16, the HMC182S14 uniquely combines negative-bias efficiency, integrated decoding, and non-reflective performance - making it optimal for space-constrained, high-isolation basestation front-ends where VSWR stability is critical.

Availability

HMC182S14 is available at Aetrix Electronics and suitable for antenna diversity systems, switched filter banks, and gain/attenuation selection circuits requiring stable component supply, consistent RF performance across temperature, and long-term obsolescence mitigation.

Supply support for HMC182S14 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 acquired Hittite Microwave in 2014 and maintains its high-frequency RF portfolio, specializing in GaAs, SiGe, and RF SOI solutions for wireless infrastructure and defense applications.

The HMC182S14 belongs to Hittite's legacy SP4T MMIC switch family, engineered specifically for cost-sensitive, high-isolation RF front-end multiplexing in cellular basestations and test instrumentation.

FAQ

What is the recommended bias voltage for HMC182S14?

The HMC182S14 requires a nominal Vee bias of -5.0 VDC ±10% applied to Pin 10. This negative supply powers the internal GaAs FETs and 2:4 decoder. Current draw is 4.0 mA typical and 7.0 mA maximum. Stable regulation and local 10,000 pF decoupling are mandatory to ensure specified insertion loss and isolation across temperature.

Does HMC182S14 support TTL-level control inputs?

Yes, HMC182S14 supports direct TTL logic control when its Vee pin (Pin 10) is tied to the same -5 V supply used by the driving TTL gate's Vee pin. Control inputs A and B accept 0 to -3 V (low) and -5 to -4.2 V (high), matching standard HCT logic thresholds. No level-shifting circuitry is needed.

What is the thermal resistance of HMC182S14, and how does it affect power handling?

HMC182S14 has a thermal resistance of 123 °C/W on the insertion loss path and 260 °C/W on terminated paths. At +27 dBm input power (<500 MHz), junction temperature rise remains within safe limits provided all 11 ground pins are soldered to a solid RF ground plane - enabling reliable operation without heatsinking in most basestation PCB layouts.

Can HMC182S14 replace HMC165S14 without board modifications?

HMC182S14 is documented as a drop-in replacement for HMC165S14 in applications requiring improved "off-state" VSWR. Both use identical SOIC-14 packages and pinouts, and share the same RFCOM, RF1–RF4, Vee, and ground assignments. No PCB changes are required, though control logic may simplify due to integrated decoding.

What RF performance does HMC182S14 deliver at 2 GHz?

At 2 GHz, HMC182S14 delivers 1.2 dB maximum insertion loss, 32 dB minimum isolation, and 13 dB minimum off-state return loss. Its IIP3 remains 37 dBm (typ.) under two-tone 7 dBm conditions, and switching time stays ≤50 ns - confirming full-spec operation across its entire 2 GHz rated bandwidth.