A 12-bit vernier ring time-to-digital converter in 0.13μm CMOS technology

Abstract

A novel 12-bit Vernier ring time-to-digital converter (TDC) with 8ps of time resolution for digital-phase-locked-loop applications is presented. The TDC achieves a large detectable range of 32ns. The core of the TDC occupies 0.75 × 0.35 mm2 in a 0.13um CMOS technology. The total power consumption for the entire TDC chip is only 7.5mW with a 1.5V power supply at a sample rate of 15MSps.