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Dead-Zone Free, Static Phase Offset Improvement Phase Detector for High Resolution and Low Jitter Delay-Locked Loop
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Journal Article
Dead-Zone Free, Static Phase Offset Improvement Phase Detector for High Resolution and Low Jitter Delay-Locked Loop
2023
Overview
This work presents a phase detector (PD) having dead-zone free and static phase offset improvement performance. The proposed phase detector inherits the low power consumption advantage of the conventional phase detector using two true-single-phase clocking (TSPC) DFFs. It also effectively reduces the static phase offset, even in the presence of inevitable charge pump current mismatch. And the dead-zone problem of conventional TSPC PD is overcome by using a falling edge delay inverter. The PD is implemented using a standard 180nm CMOS technology. The dimension of the PD’s layout is 11μm×16μm. Post-layout simulation shows that the power consumption is 53.8μW at 250MHz and 160μW at 800MHz. It achieves tiny static phase offset even if the charge pump has a 3.8% current mismatch.
Publisher
IOP Publishing
Subject
