Dithering Loopback-Based Prediction Technique for Mixed-Signal Embedded System Specifications
2015; Institute of Electrical and Electronics Engineers; Volume: 63; Issue: 2 Linguagem: Inglês
10.1109/tcsii.2015.2482419
ISSN1558-3791
Autores Tópico(s)Electromagnetic Compatibility and Noise Suppression
ResumoLower cost test solutions are required to overcome high test cost issue of conventional characterization for the mixed-signal circuits, which is primarily caused by test equipment cost. This brief proposes a cost-effective self-characterization technique that accurately predicts the harmonics of individual mixed-signal circuits by dithering a loopback path with Gaussian-distributed noise. A set of scale factors is applied to the dithered root-mean-square noise. The different scale factors yield a corresponding change in the harmonic magnitudes of the loopback responses. Based on this, we derive a precise nonlinear loopback behavior model to quantitatively identify the harmonics of a device under test. The results show that the proposed method can be used for practical characterization.
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