5 - 6000 MHz Programmable Temperature Compensating Attenuator

    Discontinued >

    End of Life announced February 20, 2019 (PCN 19-0040).
    Last Time Buy August 30, 2019.
    RFSA4033 functional replacement is RFSA4013.
    Contact a sales representative for assistance.

    Key Features

    • Patented Circuit Architecture
    • Broadband 5MHz to 6000MHz Frequency Range
    • 64 Selectable Attenuation versus Temperature Linear-in-dB Slopes
    • +52dBm Input IP3 Typical
    • +80dBm Input IP2 Typical
    • High 1dB Compression Point >+30dBm
    • Low Residual Phase Noise <-140dBc/Hz at 10kHz offset
    • 3V to 5V Power Supply
    • 3V Logic Compatible
    • Class 2 ESD (2000V HBM)

    Qorvo's RFSA4033 is a fully monolithic linear-in-dB analog temperature compensating attenuator (TCA) featuring exceptional linearity over its entire gain control range. It is designed to offset the gain reduction of an RF component over temperature without the need for closed loop feedback. Eight customer selectable scaled attenuation slopes and eight selectable nominal attenuation values at 25 degrees C creates a total combination of 64 possible temperature coefficients which make it a flexible solution for RF lineups. It incorporates revolutionary new circuit architecture to solve a long standing industry problem with regards to attenuator architecture: high IP3, low DC current and broad bandwidth. Traditional approaches for solving this problem require expensive co-fired ceramics with temperature sensitive materials or current hungry PIN diodes with elaborate area consuming control circuits. This temperature compensating attenuator requires only a single supply voltage and 6 logic bits to set the temperature coefficient. The RFSA4033 is packaged in a small 3mm x 3mm QFN. This attenuator is matched to 50 ohm over its rated control range and frequency with no external matching components required.

    Frequency Min(MHz) 5
    Frequency Max(MHz) 6,000
    Attenuation Range(dB) 3 to 10
    Temperature Coefficient Range(mdB/°C) 3 to 10
    IP1dB(dBm) 30
    IIP3(dBm) 52
    Voltage(V) 5
    Package Type QFN
    Package(mm) 3 x 3
    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 > Repeaters / Boosters / DAS

      Repeaters / Boosters / DAS