Design and implementation of CMOS LVDS 2.5 Gb/s transmitter and 1.3 Gb/s receiver for optical interconnections

Abstract

Design and implementation of a 2.5 Gb/s CMOS transmitter and a 1.3 Gb/s receiver for optical interconnections are presented. The transmitter accepts LVDS signals and converts it into optical signals. The receiver receives the optical signals and recovers it to LVDS signals. They are designed and implemented in standard 0.25 um CMOS process using 1-poly and 5-metal layers. The 850 nm VCSEL is assumed as a light source. Maximum transmit data rate of 2.5 Gb/s and receive data rate of 1.3 Gb/s are obtained over a wide range of common mode operation. At supply voltage of 2.5 V, the transmitter and receiver consume less then 50 nW and 51 nW of power, respectively.