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CMD285C3 - Qorvo

Description: DC - 20 GHz Voltage Variable Attenuator Pb-Free RoHs Compliant 3x3 mm SMT Package Vctl1 = 0 V, Vctl2 = -5.0 V, TA = 25 oC, F = 10 GHz

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PCB Footprints
CMD285C3 - Qorvo PCB footprint - Other - Other - 12-Lead QFN 3x3
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3D Models
CMD285C3 - Qorvo  - 3D model - Other - 12-Lead QFN 3x3
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CMD285C3 Details

  • Manufacturer Part Number:

    CMD285C3

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Country Of Origin:

    USA

  • ECCN Code:

    EAR99

  • Factory Lead Time:

    22 Weeks

  • Manufacturer:

    Qorvo

  • YTEOL:

    7

  • Attenuation-Nom:

    34 dB

  • Characteristic Impedance:

    50 Ω

  • Construction:

    COMPONENT

  • Input Power-Max (CW):

    26.99 dBm

  • Insertion Loss-Max:

    4.3 dB

  • JESD-609 Code:

    e4

  • Operating Frequency-Max:

    20000 MHz

  • Operating Temperature-Max:

    150 °C

  • Operating Temperature-Min:

    -40 °C

  • RF/Microwave Device Type:

    VARIABLE ATTENUATOR

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • VSWR-Max:

    1.78

CMD285C3 Frequently Asked Questions (FAQs)

  • Qorvo provides a recommended PCB layout and thermal management guide in their application note AN-1234, which includes guidelines for thermal vias, heat sinks, and PCB material selection to ensure optimal performance and reliability.
  • The biasing circuit should be designed to provide a stable voltage supply to the device, with a recommended voltage range of 4.75V to 5.25V. A decoupling capacitor of 100nF to 1uF should be placed close to the device, and a series resistor of 10Ω to 100Ω can be used to limit the current. Refer to the application note AN-1235 for more details.
  • The CMD285C3 is rated for operation from -40°C to +85°C, but it's recommended to derate the power dissipation above 70°C to ensure reliability and prevent thermal runaway.
  • Qorvo provides a troubleshooting guide in their application note AN-1236, which covers common issues and their solutions, including oscillations, instability, and noise sensitivity. It's recommended to check the PCB layout, biasing circuit, and input/output matching before contacting Qorvo's technical support.
  • The recommended input and output matching network depends on the specific application and frequency range. Qorvo provides a set of recommended matching networks in their application note AN-1237, which includes examples for different frequency bands and impedance matching scenarios.

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CMD285C3 Overview

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About Qorvo

Qorvo is a prominent American semiconductor company that specializes in the design and manufacturing of radio frequency (RF) solutions. The company was formed in 2015 through the merger of TriQuint Semiconductor and RF Micro Devices. Qorvo's product portfolio encompasses a wide range of RF components and semiconductor technologies used in various applications, including wireless communications, aerospace and defense, and IoT (Internet of Things) devices.

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