ECEN720: High-Speed Links Circuits and Systems Spring 2021
• Single-ended vs differential signaling • Controlled-impedance current & voltage-mode drivers • Swing enhancement techniques ... • Parallel push-pull current sources driven by the MSB & LSB allow for a high-swing PAM4 implementation • Achieves 1.3V ppd output swing in 1V 28nm CMOS with >94% RLM
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