5 - 4000 MHz, Serial/Parallel Controlled Digital Step Attenuator, 7-Bit, 0.25 dB Steps

    Last Time Buy >

    End of Life announced November 17, 2023 (PCN 23-0162).
    Last Time Buy: June 1, 2025
    Recommended replacement for new designs: QPC6713Q
    Contact your local sales representative for assistance.

    Note:  Any orders for Last Time Buy materials from Qorvo are considered non-cancellable, non-returnable.

    Key Features

    • 7-Bit, 31.75dB Range, 0.25dB Step
    • Patent Pending Circuit Architecture
    • Overshoot-free Transient Switching Performance
    • Frequency Range 5MHz to 4000MHz
    • High Linearity, IIP3 >55dBm
    • Serial and Parallel Control Interface
    • Fast Switching Speed <120nsec
    • Power-up Default Setting Is Maximum Attenuation
    • Serial Addressable Supports Up to Eight Addresses
    • Single Supply 3V to 5V Operation
    • RF Pins Have No DC Voltage, Can Be DC Grounded Externally

    Qorvo's RFSA3715 is a 7-bit digital step attenuator (DSA) that features high linearity over the entire 31.75dB gain control range with 0.25dB steps. The RFSA3715 features three modes of control: serial addressable, latched parallel and direct parallel programming. The RFSA3715 has a low insertion loss of 1.5dB at 2GHz. Patent pending circuit architecture providing overshoot-free transient switching performance. External address pins allow up to eight DSAs to be controlled on a single bus. The RFSA3715 is available in a 5mm x 5mm QFN package.

    Frequency Min(MHz) 5
    Frequency Max(MHz) 4,000
    Insertion Loss(dB) 1.5
    Attenuation Range(dB) 31.75
    IP0.1dB(dBm) 30
    IIP3(dBm) 50
    Interface Serial & Parallel
    Bits 7
    Step Size(dB) 0.25
    Voltage(V) 5
    Package Type QFN
    Package(mm) 5.0 x 5.0
    ECCN 5A991.G

    X-Microwave Design System

    This product is available as an X-Microwave Block (X-MWblock) for evaluation.

    X-MWblocks are RF and microwave "drop-in" components that can be used individually for prototyping or in production assemblies. X-MWblocks are easy to test, integrate, align, and configure to 60 GHz and beyond. No messy sweat soldering or silver epoxy processes are required. X-MWblocks are highly characterized with S-parameter models and connect with a patented solder-less interconnect technology.

    Order the X-Microwave Block for this product

    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