Abstract
Implementing serial I/O receivers based on analog-to-digital converters (ADCs) and digital signal post-processing has drawn growing interest with technology scaling, but power consumption remains among the key issues for such digital receiver in high speed applications. This paper presents an ADC-based receiver that uses a low-gain analog and mixed-mode pre-equalizer in conjunction with non-uniform reference levels for the ADC. The combination compensates for both the frontend non-ideality and the channel response while maintaining low ADC resolution and hence enables low power consumption. The receiver is fabricated in a 65 nm CMOS technology with 10 Gb/s data rate, and has 13 pJ/bit and 10.6 pJ/bit power efficiency for a 29 dB and a 23 dB loss channel respectively.
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