40 - 1000 MHz, 21 - 27 dB Gain CATV Infrastructure Power Doubler

    Discontinued >

    End of Life announced August 7, 2020 (PCN 20-0116).
    Last Time Buy: February 28, 2021
    Recommended replacement for new designs: QPB8957, QPB8857
    Contact your local sales representative for assistance.

    Key Features

    • 75 Ohm, 40 - 1000 MHz bandwidth
    • GaAs pHEMT & MESFET technology
    • User configurable gain: 21 - 27 dB
    • Integrated linearization
    • Flexible bias voltage and current for optimum efficiency
    • SOIC-16 Wide package

    Qorvo's TAT8857A1H is a cost effective 75 Ohm RFIC amplifier designed for use in doubler CATV applications up to 1000 MHz. It works with readily available SMT baluns and transformers to provide a highly flexible low cost replacement for traditional hybrids. Gain of the TAT8857A1H may be easily adjusted by varying external components, allowing for a family of doubler solutions to be developed from a single RFIC. This product provides integrated linearization to improve the 3rd order distortion performance.

    The TAT8857A1H may be protected against transient surges with the TQP200002 and an output high pass filter network. Please contact Qorvo for details.

    The TAT8857A1H supports traditional 24 V and 12 V supply voltages. Bias current may be adjusted to suit particular requirements with standard or active biasing approaches. Please contact Qorvo for further details.

    Typical Applications

      • CATV Line Amplifiers
    Type Downstream
    Frequency Min(MHz) 40
    Frequency Max(MHz) 1,000
    Gain(dB) 21 to 27
    NF(dB) 4
    Voltage(V) 24
    Current(mA) 350
    RoHS Yes
    Lead Free Yes
    Halogen Free Yes
    ITAR Restricted No
    ECCN 5A991.B

    This product appears in the following application block diagrams:

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

      4 Port Optical Node RF Launch Amp