摘要
讨论了流水线A/D转换器的工作原理,定量分析了开关电容增益块中最重要的两个热噪声源:采样开关和放大器的热噪声。以此为基础,提出了使功耗最小化的采样电容选择方法,以及在简单模型下的取值。在对A/D转换器进行功耗优化时,分析结果对选择采样电容和每级分辨率具有指导意义。
The operational principle of pipelined analog-to-digital converters is discussed.Quantitative analysis of noise voltage caused by two important thermal noise sources, sampling switch and amplifier, is presented.A method for power minimization is described, and parameter values for simple model are given.The results serve as useful guidelines for designers in choosing sampling capacitors and number of bit to minimize the ADC's power consumption.
出处
《微电子学》
CAS
CSCD
北大核心
2004年第4期435-438,共4页
Microelectronics
