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    LONTIUM - PRODUCTS - Others - High Speed Repeater/Retimer - showHigh Speed Repeater/Retimer

    1. Description

    The Lontium LT1258 is a quad 2:2 cross-point switch or splitter with signal conditioning suitable for high-speed bus applications with data rates up to 12.5 Gbps. The continuous time linear equalizer (CTLE) of the receiver provides adjustable boost to compensate up to 25 dB insertion-loss at 6.25 GHz. The transmitter features a programmable amplitude voltage levels to be selectable up to 1200 mVpp and de-emphasis up to 8 dB.
    In order to save power consumption, the LT1258 can work well from 1.8V to 2.5V power supply in external LDO mode.
    The LT1258 can be configured to support PCIe, CAUI-10, and SAS/SATA, 10G-KR, CPRI or other signaling protocols.
    The LT1258 is fabricated in advanced CMOS process and implemented in 10mm x 5.5mm QFN54 package.

    2. Features

    • Support 1Gbps to 12.5Gbps Data Rate
    • Input signal detect and output sink detect support
    • 2x2 Analog cross-point Switch
    • Data lane polarity swappable
    • Up to 4 forward and 4 backward lanes support
    • Programmable de-emphasis up to 8dB
    • Up to 1.2V output Swing
    • Programmable Through Pin Selection, EEPROM or I2C/SMBus Interface
    • Selectable 2.5-V or 3.3-V supply voltage
    • Equalization performance
      PRBS31 25 dB@12.5Gbps
      PRBS31 26 dB@11.5Gbps
      PRBS31 27 dB@10.3125Gbps
    • Support up to 400KHz I2C/SMBus slave

    3. Application

    • 10G-KR
    • CAUI-10
    • SAS/SATA 
    • CPRI
    • PCle 
    • SGMII


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