Features and Benefits

  • Wide Tuning Bandwidth 
  • High Output Power: +20 dBm 
  • Low SSB Phase Noise: -95 dBc/Hz @100 kHz 
  • No External Resonator Needed
  • Single Positive Supply: +8 to +15V @ 185 mA 
  • Hermeticaly Sealed Module 
  • Field Replaceable SMA Connectors 
  • -40C to +85C Operating Temperature

Product Details

The HMC-C028 is a wideband GaAs InGaP Voltage Controlled Oscillator which incorporates the resonator, negative resistance device, and varactor diode. An internal voltage regulator provides excellent 0.2 MHz/V frequency pushing while the output buffer amplifier boosts output power to +20 dBm; which is enough to drive one or two mixers.

Phase noise performance is excellent over temperature due to the oscillators monolithic construction. The Vtune port accepts an analog tuning voltage from 0 to +18V. The HMC-C028 VCO operates from a single +8V to +15V supply, and is housed in a hermetically sealed module. This wideband VCO uniquely combines the attributes of small size, low phase noise, wide tuning range and high output power.


  • Industrial/Medical Equipment 
  • Test & Measurement Equipment 
  • Military Radar, EW & ECM 
  • Lab Instrumentation

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Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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