RFSA3715

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

    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
    IP1dB(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

    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