Broadband Solid State Attenuators

SSA

  • dBm‘s SSA series attenuators cover up to 3 GHz. They are all solid state designs with 1 dB resolution. Switching time is 1000 times faster than relay type attenuators, and reliability and repeatability are outstanding. Power consumption is extremely low. These solid state attenuators can also be configured in groups of up to 16. An addressable 8 bit parallel driver card provides a simple control interface. The interface is double buffered, so attenuation channels can be set individually, or all changed simultaneously.

    Applications

    • Automatic test stations
    • Multi-channel simulators
    • Inter-op testing

    • 20 – 3000 MHz
    • 1,8, or 16 channels with single control interface
    • Exceptional reliability and repeatability

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    Multi-Channel Attenuator Assembly

    No. of Independent Channels 8 to 16 dB
    Control Interface Bus Byte wide parallel latching, double buffered
     
    Data:
    8 bit parallel
    Address:
    8 bit
    Byte Write Strobe:
    1 bit
    Master Strobe:
    1 bit
    Assembly size 4.2″ x 19″ x 2″ (160 cubic inches)
    DC Power +15V @ 35 mA (19 mA for 8 channels)
    -15V @ 360 mA (180 mA for 8 channels)
    +5V @ 75 mA

    Solid State Attenuator

    Attenuation Range 0 to 95 dB
    Attenuation Resolution 1 dB
    Frequency Range 20 MHz to 3,000 MHz
    Insertion Loss 7.5 dB (20 to 3,000 MHz)
    Amplitude Ripple +/-0.75 dB @ 0 dB attn, 20 MHz to 3,000 MHz
    +/-0.2 dB max, per 100 MHz
    1 dB Comp Point >+25 dBm 100 MHz to 3,000 MHz,
    >+19 dBm @ 20 MHz
    Output 3rd order intercept +40 dBm typical @ 0 dB,
    +35 dBm min any setting
    Noise floor < -170 dBm/Hz
    Switching Speed < 16 us 10% TTL to 90% RF
    RF Rise/Fall Time < 3 us
    VSWR 1.5:1, 100 to 3,000 MHz
    Size 3.2″ x 1.4″ x 0.75″ (excluding RF connectors)
    Connectors SMA (F)
    Control Interface 7 bit parallel TTL binary weighting
    DC Power +15V @ 2 mA
    -15V @ 22 mA

    Download Full Datasheet