← 返回 JSSC 论文列表JSSC 2020第2期Clocking & PLLs0.18µmPLLNeural Network Accelerator
A 951-fsrms Period Jitter 32 Modulation Range in-Band Modulation Spread-Spectrum
提出一种基于带内相位调制的扩频时钟发生器，实现低抖动和宽调制范围。
0.18-µm CMOS, 1.8V, 352MHz输出频率, 951-fs rms周期抖动, 9.98mW功耗
扩频时钟发生器带内相位调制锁相环低抖动离散时间环路滤波器
▸采用带内相位调制技术
▸基于电荷泵锁相环配置的离散时间环路滤波器
▸输出时钟相位精确跟踪输入相位调制信号
Abstract
A spread-spectrum clock generator is proposed
based on an in-band phase modulation. In a charge-pump
phase-locked loop configuration, the input phase modulation
signal is applied to the proposed charge-based discrete-time loop
filter. The phase difference between the input phase modula-
tion signal and the output clock feedback phase is sampled
and applied to the control voltage of an oscillator. The loop
gain of the clock generator pushes the output clock phase to
accurately trace the input phase