QPC3614

    5 − 1500 MHz, 75 Ohm Digital Step Attenuator

    Key Features

    • 6-Bit, 31.5 dB Range, 0.5 dB Step
    • Patented Circuit Architecture
    • Overshoot-free Transient Switching Performance
    • Frequency Range 5 MHz - 1500 MHz
    • High Linearity, IIP3 65 dBm Typical at 1 GHz
    • Serial and Parallel Control Interface
    • Fast Switching Speed, < 500 nsec Typical
    • RF Pads Have No DC Voltage; Can be DC Grounded Externally
    • Option to Turn Off Negative Voltage Generator and Supply VSS Externally
    • Power-up Default Setting Is Maximum Attenuation

    The QPC3614 is a 75 Ohm 6-bit digital step attenuator (DSA) that features high linearity over the entire 31.5 dB gain control range in 0.5 dB steps and has a low insertion loss of 1.2 dB at 1 GHz. The QPC3614 features three modes of control: serial, latched parallel, and direct parallel programming. Patented circuit architecture provides overshoot-free transient switching performance. QPC3614 is available in a 20-pin 4.2 mm x 4.2 mm x 0.90 mm QFN package.

    Typical Applications

      • Optical Nodes
      • Point-to-Point
      • Pre-amplifier Attenuation
      • Inter-stage Attenuation
      • Return Attenuation
      • AGC and Tilt Control
    Frequency Min(MHz) 5
    Frequency Max(MHz) 1,500
    Insertion Loss(dB) 1.2
    Attenuation Range(dB) 31.5
    IIP3(dBm) 65
    Interface Digital
    Bits 6
    Step Size(dB) 0.5
    Voltage(V) 5
    Package Type QFN
    Package(mm) 4.2 x 4.2
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN 5A991G

    This product appears in the following application block diagrams:

    • Applications > Network Infrastructure > Broadband Access > Cable TV > 4 Port Optical Node

      4 Port Optical Node