A 1.0 Gb/s BiCMOS multi-channel optical interface transmitter and receiverchip set for high resolution digital displays

In this paper, a 1.0 Gb/s multi-channel optical interface transmitter (Tx) and receiver (Rx) chip set is prensented. We propose a new high speed seria l digital video FO scheme for high resolution liquid crystal displays (LCD) operating up to the SXGA(1280*1024 pixels) grade. By using an optical fibe r as a channel, it is possible to implement the optical interface with a lo w EMI, high skew-tolerance, and long transmission distance. All the analog front ends such as a laser driver in the Tx and a PD current detector in th e Rx are fully integrated in the chip set. The interface chip set has a dat a recovery system with 1 bit skew compensation and an encoder / decoder for dc balancing. With a single 2.5V supply operating at 1.0 Gb/s, the power c onsumption of the Tx is 150 mW and that of the Rx is 230 mW, respectively. They were implemented in a 0.5 um, 3-metal BiCMOS process and occupy an act ive area of 3,170 * 3,440 mm(2), each.