摘要
首先,介绍了模拟开关的应用范围、分类,失效率的浴盆曲线规律和集成电路测试的重要性;其次,详细地介绍了集成电路模拟开关直流参数的理论测试方法,包括电源电流、导通电阻、 S端和D端电流和输入电流,总结了实际测试中的问题和难点主要有两点:一是导通电阻偏差大,二是S、 D端漏电流测试不准确,并介绍了导致这两个问题的原因;然后,介绍了在实际中模拟开关测试的开尔文测试法和辅助回路漏电流测试方法;最后,对模拟开关集成电路测试进行了总结,即在前期设计测试回路与DUT板时需要考虑开尔文连接点的选择,尽量地减少因为接触电阻或者连接线内阻而引起的导通电阻的偏差,减小因测试夹具和测试回路引入的漏电流,以保证测试结果的准确性。
Firstly,the application range and classification of analog switches,the rule of bath curve of failure rate and the importance of IC testing are introduced.Then,the theoretical test method of analog switching DC parameters of IC is introduced in detail,including power supply current,on resistance,the current of S and D terminal,and input current,and the prroblems and difficulties in the actual test are summarized as two points,one is that the on-resistance deviation is large,and the other one is that the test results of the leakage current of S and D terminal is inaccurate and the causes of these two problems are introduced.Next,the Kelvin test method and auxilliary circuit leakage current test method are introduced.Finally,the test of analog switching IC is summarized,that is,the selection of Kelvin connection point should be considered when designing the test loop and DUT board in the early stage,and the deviation of on-resistance caused by contact resistance or internal resistance of connection line should be minimized,and the leakage current introduced by the test fixture and test loop should be reduced so as to ensure the accuracy of the test results.
作者
张国强
杨国牛
ZHANG Guoqiang;YANG Guoniu(Xi'an Mingde Institute of'Technology,Xi'an 710124,China;Xi'an Xigu Microelectronics Co.,Ltd.,Xi'an 710124,China)
出处
《电子产品可靠性与环境试验》
2021年第3期70-74,共5页
Electronic Product Reliability and Environmental Testing
