Power Consumptions Model and Model-based Design Optimization for Sigma-Delta Modulators
| Autor: | Huang, Ray-Chie, 黃瑞祺 |
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| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 The conventional sigma-delta ADC system design is a time consuming process and needs much trials and errors with system parameters(GBW, OSR and Bit…etc ) to meet the specific specifications(signal bandwidth, SNDR). This paper analyze the mainly noise sources and nonlinear distortions. Utilizing the noise power models, nonlinear distortion power models and accurate power consumption models derived in this paper, and the assigned signal to noise and distortion ratio (SNDR) to be the design goal, we can forward to do design optimization under the specific specifications. Design optimization means that under the specific specifications, we find a set of optimal design parameters such that the power consumption of ADCs is minimum and SNDR is maximum, and reduce the huge time-cost to set up the circuit specifications. Finally, design optimization is tested against a published design result. Although design automation issues have been partially addressed by recent behavior- simulation–based methods, yet such methods can be slower than our analytical approach far. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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