5 - 6000 MHz Serial Controlled Digital Step Attenuator, 5-Bit, 0.5 dB Steps

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    End of Life announced May 29, 2020 (PCN 20-0070).
    Last Time Buy: December 9, 2020
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    Key Features

    • 5-Bit, 15.5dB Range, 0.5dB Step
    • Patented Circuit Architecture
    • Overshoot-free Transient Switching Performance
    • Frequency Range 5MHz to 6000MHz
    • High Linearity, IIP3 >55dBm
    • Serial Control Interface
    • Fast Switching Speed, <120nsec Typical
    • Serial Addressable Supports Up to Eight Addresses
    • Single Supply 3V to 5V Operation
    • RF Pins Have No DC Voltage, Can be DC Grounded Externally
    • Power-up Default Setting Is Maximum Attenuation

    Qorvo's RFSA3523 is a 5-bit digital step attenuator (DSA) that features high linearity over the entire 15.5dB gain control range with 0.5dB steps. The RFSA3523 uses serial control interface. The RFSA3523 has a low insertion loss of 1.4dB at 2GHz. Patent pending circuit architecture provides overshoot-free transient switching performance. External address pins allow up to eight DSAs to be controlled on a single bus. The RFSA3523 is available in a 3mm x 3mm QFN package.

    Frequency Min(MHz) 5
    Frequency Max(MHz) 6,000
    Insertion Loss(dB) 1.4
    Attenuation Range(dB) 15.5
    IP0.1dB(dBm) 30
    IIP3(dBm) 55
    Interface Serial
    Bits 5
    Step Size(dB) 0.5
    Voltage(V) 5
    Package Type QFN
    Package(mm) 3.0 x 3.0 x 0.85
    ECCN 5A991.G

    This product appears in the following application block diagrams:

    • Applications > Defense & Aerospace > Communications > Military Radio

      Military Radio

    • Applications > Network Infrastructure > Wireless Infrastructure > Macro Base Station

      Macro Base Station

    • Applications > Network Infrastructure > Wireless Infrastructure > Repeaters / Boosters / DAS

      Repeaters / Boosters / DAS