A New SET-Tolerant Radiation-Hardened DLL Design with Lock Detector[J]. 2017, 34(9): 77-81.DOI:
一种具有锁定检测结构的新型抗SET效应DLL设计技术
摘要
针对延迟锁相环的结构和对单粒子效应敏感性的分析
提出了一种具有锁定检测结构的新型抗SET加固DLL结构
该结构能在满足原有DLL性能指标的前提下实现对SET效应的加固
保证DLL正交四相时钟的正确输出.基于65 nm CMOS工艺进行电路设计仿真
结果显示在500 MHz工作频率下
此DLL功能正确
抗SET性能良好
SET阈值达到100 MeV·cm/mg
在空间辐射环境中具有很好的稳定性.
Abstract
This paper presents a new radiation-hardened by design DLL in 65 nm CMOS fabrication process.The proposed DLL uses a lock detector to avoid the lock error and phase error in SET (Single-event Transient) response.The simulation results demonstrate that the proposed DLL can generate quadrature phase clock in a 500 MHz with high reliability and the SET threshold is better than 100 MeV·cm/mg