With the emergence of high quality ADC, the traditional technology of testing isn’t fit for the new ADC. In order to evaluate high quality ADC, the paper focuses on a new technology for new ADC’s test. In the paper the new technology is described and proved clearly. The conception and technology of ADC testing and the source of ultralfex system are described. Now the technology has been used in actual high quality ADC’s test.%随着高性能ADC器件的不断出现，传统的ADC器件测试评价方法已经越来越不适用于高性能ADC器件。为从工程上实现高性能ADC器件的测试评价，提供了一种高性能ADC器件关键参数评价的新算法，同时详细地分析新算法的原理并且论证了新算法的正确性。目前该算法已经大量地应用到高性能ADC器件的实际测试评价中去，解决了高性能ADC器件难以评价的问题。
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