描述 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.

特性 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 SMBus Interface
? Selectable 2.5-V or 3.3-V supply voltage