Analog Devices Inc. 120257-HMC613LC4B

Overview

HMC613LC4B from Analog Devices (formerly Hittite Microwave) is a Successive Detection Log Video Amplifier (SDLVA) operating from 0.1 to 20 GHz, delivering 59 dB logging range (−54 to +5 dBm at 18 GHz), 14 mV/dB log slope, and 14 ns propagation delay. It serves as the core RF power detection and logarithmic compression element in high-speed channelized receivers for electronic warfare systems.

For engineers reviewing the HMC613LC4B datasheet, HMC613LC4B pinout, HMC613LC4B application, or HMC613LC4B equivalent, this page provides verified electrical parameters, validated SMT package mapping, functional pin assignments, real-world EW/ELINT use cases, and two confirmed alternative SDLVAs with documented performance trade-offs.

Technical Context

The HMC613LC4B implements a multi-stage successive detection architecture across 0.1–20 GHz, enabling wideband RF input signal compression into a linear-in-dB video output. Its dual supply rails (Vcc1/Vcc2 = +3.3 V) power independent bias networks for RF and video sections, supporting single-ended operation with AC-coupled IN− grounded via 50 Ω.

It delivers ±1 dB log linearity over −50 to +3 dBm input range and maintains ±1.5 dB frequency flatness across band. The 4 ns rise / 18 ns fall time and sub-30 ns recovery support rapid pulse detection in DF radar and IFM receivers where timing fidelity directly impacts angle-of-arrival accuracy.

Key Specifications

Pinout & Package

Package: 24-lead, 4×4 mm ceramic SMT (alumina body, gold-over-nickel plating), MSL3, exposed ground paddle requiring solder connection to PCB RF ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar log video amplifier applications.

Compared with HMC613LC4B, HMC1099LP4E trades 0.1–10 GHz coverage and faster timing for narrower band and higher voltage, while LT5537 sacrifices RF bandwidth and speed entirely for cost-sensitive low-frequency applications-neither matches the HMC613LC4B's combination of 20 GHz range, 59 dB dynamic span, and nanosecond-scale pulse fidelity.

Availability

HMC613LC4B is available at Aetrix Electronics and suitable for electronic warfare receivers, direction-finding radar front-ends, and military-grade test equipment requiring stable component supply across extended product lifecycles.

Supply support for HMC613LC4B 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 integrates its high-frequency RF IC portfolio into defense, aerospace, and communications solutions.

The HMC613LC4B belongs to Analog Devices' legacy Hittite SDLVA product line, engineered specifically for wideband electronic intelligence and radar warning receiver applications demanding nanosecond timing and multi-decade dynamic range.

FAQ

What is the minimum detectable input power level for the HMC613LC4B?

The HMC613LC4B achieves a minimum logging range of −54 dBm at 18 GHz with ±3 dB error, corresponding to its lower sensitivity limit under specified conditions. This value is validated across temperature (−40 °C to +85 °C) and reflects the device's ability to resolve very weak RF signals typical of distant emitters in ELINT scenarios. The HMC613LC4B maintains usable log response down to this level without requiring external LNA amplification.

Does the HMC613LC4B require external components for stable operation?

Yes, the HMC613LC4B requires external decoupling: 33 pF and 10 kΩ filters on Vcc1/Vcc2 pins per the application circuit, a 50 Ω AC-coupling capacitor on IN− for single-ended use, and ≥1 kΩ load on Video Out. These are not optional-the 33 pF capacitor ensures proper start-up rise time (<100 µs), and the 1 kΩ load preserves ±1 dB log linearity. Omitting them degrades accuracy and timing performance of the HMC613LC4B.

Can the HMC613LC4B operate with a single 3.3 V supply, or are separate Vcc1 and Vcc2 rails mandatory?

The HMC613LC4B is designed for dual 3.3 V supplies (Vcc1 and Vcc2), but they must be tied together externally per the application circuit and datasheet guidance. Both rails share the same nominal voltage and are filtered independently to isolate noise between RF and video sections. Using only one rail violates the internal bias architecture and risks degraded log linearity and increased recovery time-proper implementation requires both Vcc1 and Vcc2 connected to +3.3 V with dedicated local filtering for each, as specified for the HMC613LC4B.

Is the HMC613LC4B pin-compatible with earlier Hittite SDLVA models like HMC603LP4E?

No, the HMC613LC4B is not pin-compatible with HMC603LP4E. It uses a 24-lead 4×4 mm ceramic package with distinct pin assignments-including dedicated EN, dual Vcc, and N/C grounding requirements-whereas HMC603LP4E uses a 16-lead 3×3 mm package with different pinout and no enable function. PCB layout and footprint must be redesigned for the HMC613LC4B; direct replacement is not possible without hardware revision.

What thermal considerations apply to the HMC613LC4B in high-density RF assemblies?

The HMC613LC4B has a junction-to-package thermal resistance of 87.1 °C/W and requires soldering of its exposed ground paddle and all designated N/C pins to a solid RF ground plane with multiple thermal vias. At full load (88 mA total supply current), power dissipation reaches ~0.29 W; without adequate thermal conduction, junction temperature can exceed 125 °C even at +85 °C ambient. Thermal design for the HMC613LC4B must prioritize low-impedance ground connections and avoid nearby heat sources to maintain log accuracy and reliability.