Alternative Parts


Features and Benefits

  • Attenuation range: 1 dB LSB steps to 31 dB
  • Insertion loss: 6 dB typical at 33 GHz
  • Attenuation accuracy: ±0.5 dB typical
  • Input linearity
    • 0.1 dB compression (P0.1dB): 24 dBm typical
    • Third-order intercept (IP3): 40 dBm typical
  • Power handling: 27 dBm
  • Dual-supply operation: ±5 V
  • CMOS-/TTL-compatible parallel control
  • 24-lead, 4 mm × 4 mm LFCSP package
HMC939ATCPZ-EP supports defense and aerospace applications (AQEC standard)
  • Download the HMC939ATCPZ-EP data sheet (pdf)
  • Military temperature range: −55°C to +125°C
  • Controlled manufacturing baseline
  • One assembly/test site
  • One fabrication site
  • Enhanced product change notification
  • Qualification data available on request
  • V62/17616

Product Details

The HMC939ALP4E is a 5-bit digital attenuator with a 31 dB attenuation control range in 1 dB steps.

The HMC939ALP4E offers optimum insertion loss, attenuation accuracy, and input linearity over the specified frequency range from 100 MHz to 33 GHz.

The HMC939ALP4E requires dual supply voltages, VDD = +5 V and VSS = −5 V, and provides CMOS-/TTL-compatible parallel control interface by incorporating an on-chip driver.

The HMC939ALP4E comes in a RoHS compliant, compact, 4 mm × 4 mm LFCSP package. See HMC939A-DIE for the die version of HMC939ALP4E.


  • Test instrumentation
  • Microwave radios and very small aperture terminals (VSATs)
  • Military radios, radars, electronic counter measures (ECMs)
  • Broadband telecommunications systems

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

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ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.