高速数字存储示波器前端电路设计

采样速率是数字存储示波器的瓶颈,它制约着数字存储示波器的发展.针对这一问题,在分析时间交叉采样方法原理的基础上,提出了一种用低速电路实现高速采样的设计思路.具体介绍了示波器的信号调理电路和高速并行ADC系统的基本原理,并详细分析了各部分硬件电路.该电路系统不仅性能好、成本低,而且采用此电路的示波器已投人生产,产品符合要求、运行稳定.

Design of Front-end Circuit in High-speed Digital Storage Oscilloscope

Sampling rate is always the bottleneck of digital storage osilloscope (DSO),and restricts the development of DSO. In order to solve the problem,on the basis of analyzing the principle of time-crossover sampling method,the design concept of using low speed circuit to achieve high-speed sampling is proposed. The signal conditioning circuit and the basic principle high-speed parallel ADC system are introduced concretely; and the hardware circuits of various parts are also given in detail. This circuitry system...