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CMD279C3

RF Variable Attenuator by Qorvo (38 more products)

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The CMD279C3 is a positive controlled, wideband GaAs MMIC 5-bit digital attenuator that operates from 2 to 18 GHz (S, C, X, Ku Band). Each bit of the attenuator is controlled by a single voltage of either 0 V or +5 V. The attenuator bit values are 0.5 (LSB), 1, 2, 4, and 8 dB, for a total attenuation of 15.5 dB with an attenuation accuracy of 0.2 dB step error. It has a low insertion loss of 3.5 dB at 9 GHz and can handle an input power of up to 27 dBm. The CMD279C3 is available in a 3 x 3mm QFN surface mount package and is matched to 50 ohms which eliminate the need for RF port matching.

Product Specifications

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Product Details

  • Part Number
    CMD279C3
  • Manufacturer
    Qorvo
  • Description
    5-Bit Digital Attenuator from 2 to 18 GHz

General Parameters

  • Type
    Digital
  • Frequency
    2 to 18 GHz
  • Bits
    5 Bit
  • Channels
    1 Channel
  • Configuration
    Solid State
  • Attenuation Range
    Up to 15.5 dB
  • Attenuation Accuracy
    0.2 dB
  • Power
    0.45 W
  • P1dB
    26.5 dBm
  • IIP3
    42 dBm
  • Insertion Loss
    3.2 to 5 dB
  • Switching Time
    25 ns
  • Supply Voltage
    2.5 to 5.5 V
  • Control Voltage
    0 to 5 V
  • Interface
    TTL/Serial/Parallel
  • Impedance
    50 Ohms
  • Return Loss
    13 dB
  • Package Type
    Surface Mount
  • Package
    QFN
  • Dimension
    3x3 mm
  • Operating Temperature
    -40 to 85 Degrees C
  • Storage Temperature
    -55 to 150 Degrees C
  • Grade
    Space Qualified
  • RoHS
    Yes

Technical Documents

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