Reliability Test Monitoring System of Digital-to-Analog Converter Microcircuits

Abstract

Digital-to-analog converters are used as part of measuring and control systems for various purposes. Their widespread application and significant impact on the output parameters of measuring systems requires maintenance of their technical parameters at a stable high level. The main requirement for these products is non-distorting waveform conversion, which is achieved by linearity of the actual conversion characteristics. The quality of precision converters is characterized by many technical parameters that significantly affect characteristics of more complex equipment. In mass production, the reliability of the manufactured digital-to-analog converters can be influenced by many factors, therefore, reliability tests are necessary to guarantee their quality. In order to verify compliance of technical parameters with specified requirements in the production of digital-to-analog converter microcircuits, it is necessary to introduce a modern automated production control system for their technical parameters. The design and the operation principle of a monitoring system for testing digital-to-analog converters for reliability using a precision element base, and modern measuring instruments to obtain high metrological characteristics, are described. The test monitoring system allows one to create specified temperature test conditions and electrical load modes, to control their parameters, and to test up to 20 digital-to-analog converters of the same type simultaneously. The development of the test monitoring system will significantly increase the quality of testing digital-to-analog converters for reliability due to the rapid receipt of data, and the ability to monitor the progress of tests.