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A 3125 Gbs Limit Amplifier in CMOS With 42 dB Gain and 1 22s Offset Compensation
提出了一种快速偏移补偿方法,通过峰值检测器和动态多抽头反馈系统,显著提高了高增益放大器的稳定时间。
3.125 Gb/s, 42 dB增益, 1.22s偏移补偿, 4 ps rms输出抖动
高速放大器偏移补偿峰值检测器动态反馈低抖动
▸快速偏移补偿方法:该方法通过动态多抽头反馈系统实现了比传统补偿方法快三个数量级的建立时间(sub-1ms),显著提高了高增益放大器的响应速度。
▸新型峰值检测器设计:采用创新的峰值检测电路结构,结合动态反馈机制,有效提升了偏移检测的精度和速度,支持2.5 mV峰峰值输入下的低抖动(4 ps rms)。
▸动态多抽头反馈系统:通过多抽头配置动态调整反馈参数,优化了增益(42 dB)、带宽与功耗的权衡,实现了3.125 Gb/s的高速数据传输性能。
▸高性能指标集成:在0.18μm CMOS工艺下,同时实现高增益(42 dB)、低抖动(4 ps rms)和快速建立(<1ms),突破了传统限幅放大器的设计瓶颈。
Abstract
A fast offset compensation method for high-gain am-
plifiers is presented that leverages a novel peak detector design and
a dynamic, multi-tap feedback system to achieve roughly three or-
ders of magnitude improvement in settling time over traditional
compensation methods. Design tradeoffs between gain, bandwidth,
power dissipation, and noise performance of the limit amplifier are
discussed. Measured results of a custom 3.125 Gb/s limit amplifier
in 0.18
m CMOS employing the proposed compensation t