IEEE

A DTC-Based Snapshot ADPLL With Feedforward Fractional Spur Cancellation and Asynchronous Duty-Modulation Dithering DCO Achieving–71.6 dBc Fractional Spur in 65-nm CMOS Process

Abstract: This paper presents a DTC-based snapshot all-digital phase-locked loop (ADPLL) that achieves robust fractional spur suppression and low phase noise with compact circuit implementation. The ...
IEEE

Efficient Asynchronous Sampling of Ripple Counter in VCO-ADC Using Ripple Register and Event Arbitration

Abstract: We present a power and area-efficient solution for robust asynchronous sampling of a ripple counter for coarse-fine VCO-ADCs. We show that by replacing the parallel register with a ...