A 0.7-to-1.1-GHz all-digital phase-locked loop with a new phase frequency detector and controlled oscillator with body-biasing

A 0.7-to-1.1-GHz all-digital phase locked loop with a new phase frequency detector and controlled oscillator with body-biasing is presented. Digital-to-voltage converter is controlled the bulk voltage in proposed voltage controlled oscillator, which results high frequency resolution and low power consumption. A search algorithm is used to generates the digital code for the digital-to-voltage converter. This all-digital phase locked loop uses a new structure for the phase-frequency-detector, which ensures high accuracy at phase frequency detecting and increasing lock speed. The proposed design is evaluated in PTM 65nm. The power consumption of the proposed circuit at 900 MHz frequency is 4.8mW.