Analog Devices Inc. 110227-HMC530LP5

Overview

HMC530LP5 from Analog Devices (formerly Hittite Microwave) is a GaAs InGaP HBT MMIC voltage-controlled oscillator with triple RF outputs: fundamental (9.5–10.8 GHz), half-frequency (4.75–5.4 GHz), and divide-by-4 (2.38–2.7 GHz). It delivers +11 dBm RFOUT power at +5 V, achieves –110 dBc/Hz phase noise @ 100 kHz offset, and operates from –40°C to +85°C. Used in SATCOM transceivers requiring stable, low-noise local oscillators.

For engineers reviewing the HMC530LP5 datasheet, HMC530LP5 pinout, HMC530LP5 application, or HMC530LP5 equivalent, key selection criteria include its integrated Fo/Fo/2/Fo/4 outputs, 32-pin 5×5 mm QFN package, tune voltage range (2–12 V), and current consumption (290–390 mA) under full operation - all critical for microwave radio synthesizer design.

Technical Context

The HMC530LP5 integrates monolithic resonators, varactor diodes, and a prescaler-based divide-by-4 circuit alongside a high-efficiency RF amplifier stage for Fo/2 output. Its GaAs HBT process ensures stable phase noise across temperature and supply variation.

All three outputs are AC-coupled and independently powered: RFOUT uses Vcc(RF), RFOUT/2 uses Vcc(Amp), and the prescaler uses Vcc(Dig). Each supply rail can be disabled to reduce total current by up to ~95 mA - 65 mA from Vcc(Dig) and 30 mA from Vcc(Amp).

Key Specifications

Pinout & Package

Package: 32-lead, 5 mm × 5 mm leadless QFN with exposed ground paddle. RoHS-compliant Sn finish (HMC530LP5E) or Sn/Pb (HMC530LP5); MSL3 rating; requires soldering of all ground leads and paddle to PCB RF ground per Hittite land pattern guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HMC513LP5 and ADF4371, the HMC530LP5 uniquely delivers three simultaneous, phase-coherent RF outputs in a single monolithic die - enabling simplified LO tree architectures in multi-band radios without sacrificing phase noise or requiring digital control infrastructure.

Availability

HMC530LP5 is available at Aetrix Electronics and suitable for point-to-point radio, SATCOM terminals, and military radar systems requiring stable component supply, consistent RF performance, and long-term obsolescence management.

Supply support for HMC530LP5 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 product portfolio, including MMIC VCOs, amplifiers, and switches targeting microwave and millimeter-wave applications.

The HMC530LP5 belongs to Hittite's legacy MMIC VCO family designed specifically for X-band wireless infrastructure and defense systems requiring low-phase-noise, multi-output, surface-mount timing sources without external tuning elements.

FAQ

What is the operating temperature range for the HMC530LP5?

The HMC530LP5 operates over –40°C to +85°C ambient temperature. Its monolithic GaAs HBT structure ensures stable frequency and phase noise performance across this full industrial range, with frequency drift rate specified at 1 MHz/°C and pulling limited to 7 MHz peak-to-peak into a 2.0:1 VSWR load. This makes the HMC530LP5 suitable for outdoor base stations and vehicle-mounted SATCOM terminals where thermal cycling is expected.

Can the HMC530LP5 generate all three outputs simultaneously?

Yes, the HMC530LP5 can generate Fo (9.5–10.8 GHz), Fo/2 (4.75–5.4 GHz), and Fo/4 (2.38–2.7 GHz) outputs simultaneously when all three supply pins - Vcc(RF), Vcc(Amp), and Vcc(Dig) - are powered at +5 V. Each output is AC-coupled and electrically isolated; RFOUT/2 and RFOUT/4 require external DC blocking capacitors before connection to 50 Ω loads. The HMC530LP5 datasheet confirms simultaneous operation in the "Electrical Specifications" table and functional diagram.

What is the recommended PCB grounding practice for the HMC530LP5?

The HMC530LP5 requires robust RF grounding: all ground pins (5, 11) and the exposed bottom paddle must be soldered to a solid, low-inductance RF ground plane using multiple thermal vias. Hittite's application note specifies minimum via count and placement - typically ≥8 vias around the paddle perimeter - to maintain thermal resistance ≤23 °C/W and minimize ground loop inductance. Failure to properly connect the paddle degrades phase noise and output power consistency.

How does tuning voltage affect phase noise in the HMC530LP5?

Phase noise of the HMC530LP5 varies with tuning voltage: at Vtune = +5 V, SSB phase noise is –110 dBc/Hz @ 100 kHz offset (typical); it degrades slightly at extremes - e.g., –107 dBc/Hz at Vtune = +2 V and –108 dBc/Hz at Vtune = +12 V - due to varactor bias shift and active device operating point changes. The datasheet includes "SSB Phase Noise vs. Tuning Voltage" plots confirming this behavior across –40°C to +85°C.

Is the HMC530LP5 pin-compatible with the HMC530LP5E?

Yes, the HMC530LP5 and HMC530LP5E share identical pinout, footprint, and electrical specifications; the only difference is lead finish (Sn/Pb vs. 100% matte Sn) and MSL reflow profile (235°C vs. 260°C peak). Both parts use the same 32-lead 5×5 mm QFN package with identical marking layout (H530 + 4-digit lot code) and mechanical dimensions. Designers may substitute HMC530LP5E for RoHS compliance without layout or schematic changes.