Reconfigurable time interval measurement circuit incorporating a programmable gain time difference amplifier

A. Alahmadi, G. Russell, A. Yakovlev
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引用次数: 12

Abstract

Time interval measurement (TIM) is used in a wide range of applications, for example, physics experiments, dynamic testing of integrated circuits (IC), telecommunications, laser distance measurement, X-ray and UV imagers etc., requiring a range of measurement accuracy and resolution. In this work, a reconfigurable TIM is designed with an adjustable resolution range of 15 down to 0.5 ps and a measurement dynamic range of 480 to 16 ps to perform a variety of time related measurements which require different test specifications; such as set-up and hold time and jitter measurements. It is considered that a reconfigurable measurement system will occupy less chip area than a range of measurement circuits designed for one specific test. The reconfigurable TIM consists of two parts, a programmable time difference amplifier and 32 cells tapped delay line. The proposed programmable time difference amplifier is designed to have a variable gain ranging from 4 to 117 with a very wide dynamic input range.
包含可编程增益时间差放大器的可重构时间间隔测量电路
时间间隔测量(TIM)应用广泛,如物理实验、集成电路(IC)的动态测试、电信、激光距离测量、x射线和紫外线成像仪等,需要一定范围的测量精度和分辨率。在这项工作中,设计了一个可重构的TIM,其可调分辨率范围为15至0.5 ps,测量动态范围为480至16 ps,以执行各种需要不同测试规范的时间相关测量;如设置和保持时间和抖动测量。考虑到一个可重构的测量系统将占用更少的芯片面积,而不是为一个特定的测试设计一系列的测量电路。可重构TIM由可编程时差放大器和32单元抽头延迟线两部分组成。所提出的可编程时差放大器被设计为具有可变增益范围从4到117,具有非常宽的动态输入范围。
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