Elite receiver optical sub-assemblies (ROSAs) are engineered based on patented Semtech Rchip technology. Our complete line of PIN and APD ROSA products spans 1310nm nanometer (nm) to 1550nm including limiting, linear and automatic gain control (AGC) functionality. Experience unparalleled signal detection with our ROSA (Receiver Optical Sub-Assembly), a cornerstone for efficient optical datacom and telecom systems. Depending upon the required functionality and application, other components may be present as well including amplifiers. OSAs generally fall into three main categories: TOSA, ROSA, and BOSA.