一种可配置Schmitt trigger IO设计  

Design of a configurable Schmitt trigger IO

作　　者：张健[1] 胥志毅[1] 邬天凯[1] 刘文江[1] 刘斌[1] 季千惠[1] 

机构地区：[1]南京电子技术研究所,南京210039

出　　处：《信息技术》2012年第6期44-47,共4页Information Technology

基　　金：上海市科技委员会项目(10706201300);上海应用材料研究发展基金项目(09700713900)

摘　　要：国防设备中使用的各种电子器件通常面临着极其复杂的电磁环境,其特点是温度变化比较大,工作电压波动大。噪声干扰会在很大程度上影响这些器件的工作。Schmitt trigger IO可以有效地解决这种复杂环境中IO的抗噪声问题。不同的应用环境中,相同的IO面临的噪声强度也不相同,有些环境中高电平的噪声大,有些环境中低电平噪声大。因此,一种可配置的、可单独调整VIH和VIL的Schmitt trigger IO可以满足单一芯片在不同应用环境中适应不同噪声干扰的要求。The application of electromagnetic environment of electronic devices in national defense equipment is extremely complex because the temperature and the working voltage are always fluctuating. Schmitt trigger IO performs very well on these anti-noise problems of IO. Noise intensity varies in different application environment. In some cases the noise of high level signal is larger; in other cases the noise of low level signal is larger. A eonfigurable Schmltt trigger IO, whose VIH and VIL can be configured independently, can help a chip to adapt to different noise interference in different environment through configuring different VIH and VIL.

关 键 词：可配置IO 施密特 抗噪声 

分 类 号：TN783[电子电信—电路与系统]