MC10SX1125

The SX1125 is an integrated limiting amplifier for high frequency fiber optic applications. The SX1125 interfaces directly to the transimpedance amplifier of a typical optical to electrical conversion portion of a fiber optic link. With data rate capabilities in the 622Mb/s range, the high gain limiting amplification of the SX1125 is ideal for high speed fiber optic applications like SONET/SDM, ATM, FDDI, Fibre Channel or Serial Hippi. The device is functionally and pin compatible to the Signetics SA5225 with a significantly higher bandwidth. The CAZP and CAZN inputs to the limiting amplifier provide an auto-zero function to effectively cancel any input offset voltage present in the amplifier.

The SX1125 incorporates a programmable level detect function to identify when the input signal has been lost. This information can be fed back to the Disable input of the device to maintain stability under loss of signal conditions. Using the Vset pin the sensitivity of the level detect can be adjusted. The CLD input is used to filter the level detect input so that random noise spikes are filtered out.