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A Phase Detection and Synchronization Circuit for On-Chip Signals

TIAN Hao;YANG Hongqiang;MA Xiao;JIANG Qi;HE Shanliang;CHEN Yang;Chengdu CORPRO Technology Co.,Ltd;  
An on-chip signal phase detection and synchronization circuit was presented.The circuit received phase relational information and continuously adjusted the delay line to maintain the desired phase relationships between the on-chip signals.The architecture and principle of the circuit was analyzed,and the designs of all blocks of the circuit were described in detail.The proposed phase detection and synchronization circuit was designed in SMIC 65 nm CMOS technology and Cadence Spectre simulator.Simulation results showed that it could generate 16 fixed phase relationships and operate over a wide frequency range from 1GHz to 4GHz.It consumed 52 mW at 4GHz.The chip active size was 450μm×450μm.
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