A 12-Gb/s dual-channel transceiver for CMOS image sensor systems

We propose a dual-channel interface architecture that allocates high and low transition-density bit streams to two separate channels. The transmitter utilizes the stacked drivers with charge-recycling to reduce the power consumption. The DC-coupled receiver front-end circuits deal with the common-mode level variations and compensate for the channel loss. The tracked oversampling CDR which realizes fast lock acquisition below 1 baud period and low logic latency is shared by the two channels. Fabricated in a 65-nm low-power CMOS technology, the dual-channel transceiver achieves 12-Gb/s data rate while the transmitter consumes 20.43mW from a 1.2V power supply.