4 x 128Gbaud Linear Differential I/O Driver

The RG8G71474 is a low-power, high-performance, 128Gbaud quad-channel linear driver chip designed for 800Gbps and beyond optical integrated transmitter small form factor (SFF) modules for metro and long-haul applications.

The RG8G71474 integrates analog control and digital (through an SPI interface) control circuitry for precise, independent driving level control and monitoring. Each driver channel has a 100Ω differential AC-coupled input and 60Ω differential interface with an open-collector type output stage and is suitable for InP-based and silicon photonics-based Mach-Zehnder modulators.