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JSSC 2008第2期Data Converters0.35μmPipeline ADCNeural Network Accelerator

A Clock-Less 10-bit Pipeline-Like AD Converter for Self-Triggered Sensors

一种用于自触发传感器的无时钟10位类流水线模数转换器
0.35μm CMOS, 400 kS/s, ENOB 8.91
模数转换器自触发传感器无时钟流水线架构低噪声
创新点1:无时钟操作(系统创新) - 该ADC采用无时钟设计,通过异步传播机制实现信号转换,消除了传统流水线ADC对时钟信号的依赖,降低了功耗和时序复杂性,适用于自触发传感器应用。
创新点2:类流水线架构(架构创新) - 采用类流水线架构,结合组合逻辑实现信号处理,在保持高分辨率(10-bit)的同时,简化了电路结构,提高了转换效率(2.5μs/转换)。
创新点3:异步传播部分转换和残差(方法创新) - 通过异步传播部分转换结果和残差信号,实现了无时钟条件下的连续转换,有效降低了噪声干扰(ENOB达8.91),适合低噪声传感器应用。
创新点4:低噪声优化(电路创新) - 在标准0.35μm CMOS工艺下实现,通过电路设计和布局优化,在2.24mm²面积内实现了低噪声性能,适用于X射线和γ射线能谱测量等敏感应用。
Abstract
In this paper, a novel 10-bit A/D converter based on a pipeline-like architecture specific for low-noise, self-triggered sensors, (e.g., X-rays and -rays spectrometry) is presented. The main innovative feature of the proposed A/D structure is the concept that, for a sampled input signal, a pipeline ADC may behave as a combinatorial logic and may operate without any timing signal (clock). The conversion is obtained asynchronously propagating the partial conversions and the residues through the va