Open Access Peer-reviewed

A High Resolution First Order Noise-Shaping Vernier Time-to-Digital Converter

Majid Memarian Sorkhabi1,, Siroos Toofan1

1Department of Electric Engineering Zanjan University, Iran

American Journal of Electrical and Electronic Engineering. 2013, 1(2), 19-22. DOI: 10.12691/ajeee-1-2-1
Published online: August 25, 2017


In this paper, we propose a noise reduction method for a Vernier Time-to-Digital Converter (VTDC) using a first-order noise shaping structure and a gated ring oscillator (GRO). An 11bit VTDC with 4 p s effective resolution was designed and developed for a high performance All Digital Frequency Synthesizer (ADFS). The VTDC realized in 180nm CMOS, its power consumption depending on the time difference between input edges; 1 to 11mA from a 1.5 V supply.


vernier time-to-digital-converter, noise shaping, ring oscillator
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