Date(s) - 30 Aug 2017
1:10 PM - 2:10 PM
3043 ECpE Building Addition
Speaker: Yuming Zhuang, ECpE Graduate Student
Adviser: Degang Chen
Title: Accurate Spectral Testing with Arbitrary Non-coherency in Sampling and Simultaneous Drifts in Amplitude and Frequency
Abstract: Accurate spectral testing plays a crucial role in modern high precision ADCs’ evaluation process. One of the challenges is to be able to cost-effectively test the continually higher resolution ADCs accurately. Due to its stringent test requirement, the standard test method for ADCs can be difficult to implement with low cost. In the seminar, an algorithm that relaxes the requirements of precise control over source amplitude & frequency, and of the need to achieve coherent sampling is proposed. Various simulation results have validated the accuracy of proposed algorithm. The proposed algorithm is capable of tolerating various test condition variations such as any-level of non-coherency, various input frequency range and different numbers of segmentation. In addition, several measurement results from different ADCs have verified the accuracy of the proposed algorithm. Such algorithm relaxes the standard test requirement such as precise control over source frequency and amplitude, which dramatically reduces the test setup complexity and cost.