1Gbps To 14Gbps, SFP+ Multirate Limiting Amplifier And VCSEL Driver

The MAX3799 is a highly integrated Limiting Amplifier and VCSEL Driver that operates up to 14Gbps, making it suitable for Ethernet and Fibre Channel applications. By providing a selectable data path with a noise-shaping Filter the MAX3799 enables a module with 10G optics to be fully compliant with both 1000BASE-SR and 10GBASE-SR specifications. Operating from a single +3.3V supply, this low-power integrated Limiting Amplifier and VCSEL Driver IC enables a platform design for SFP MSA as well as for SFP+ MSA-based optical transceivers. The high-sensitivity Limiting Amplifier limits the differential input signal generated by a Transimpedance Amplifier into a CML-level differential output signal. The compact VCSEL Driver provides a modulation and a bias current for a VCSEL Diode The optical average power is controlled by an average power control (APC) loop implemented by a controller that Interfaces to the VCSEL Driver through a 3-wire digital Interface All differential I/Os are optimally back-terminated for a 50Ω transmission line PCB design By Maxim Integrated Products