Abstract
This paper presents a 12-Gb/s power-efficient voltage-mode driver for multi-standard serial-link applications. The proposed driver combines the advantages of voltage-mode drivers and those of variable-output-swing ones into a single architecture for multi-standard operation. This is achieved by having a reconfigurable pull-up network and a fixed shared pull-down network. In addition, this technique is combined with a modified 3-tap feed-forward equalizer (FFE) to support the de-emphasis required by several standards. The proposed driver is implemented using 65-nm CMOS technology and supports a variable output voltage swing of 0.3 Vpp to 1 Vpp, while achieving data rates ranging from 1.5 Gb/s to 12 Gb/s. The driver consumes 1.25 mW for an output swing of 0.5 Vpp, which is the minimum achievable power consumption for voltage-mode drivers.
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