4-bit FLASH ADC行为级建模与仿真  

Behavioral modeling and simulation of 4-bit FLASH ADC

作　　者：孙肖林[1] 吴毅强[2] 

机构地区：[1]三江学院电子信息工程学院,江苏南京210012 [2]东南大学射频与光电集成电路研究所,江苏南京210096

出　　处：《现代电子技术》2013年第22期120-123,126,共5页Modern Electronics Technique

摘　　要：基于Matlab/Simulink的平台,设计并实现了一种新型的单通道4.bit FLASH ADC行为级仿真模型,模型充分考虑到时钟抖动、失调电压、迟滞效应、比较器噪声等非理想特性,使整个系统更逼近实际电路。在输入信号为1 GHz,采样时钟频率为500 MHz时,对非理想模型进行时域及频域分析,创建的模型和系统仿真结果可为ADC系统中的误差、静态特性及动态特性研究提供借鉴。The behavioral simulation model of single channel 4-bit FLASH ADC was designed by using Matlab/Simulink. In order to make the system closed to the real system,the nonideal characters such as clock jitter,voltage detuning,hysteresis effect and comparator noise were taken into consideration in the model. The time domain and frequency domain of nonideal model were analyzed while the input signal frequency was 1 GHz and sampling clock frequency was 500 MHz. The model and simula-tion results of the system can provide a reference for improvement of the ADC system error,static and dynamic characteristics.

关 键 词：FLASHADC MATLAB SIMULINK 行为级建模 非理想特性 

分 类 号：TN911-34[电子电信—通信与信息系统]