Fast and accurate DAC modeling techniques based on wavelet theory |
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| Authors: | James T Doyle |
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| Affiliation: | a National Semiconductor Inc. 1351 South Sunset Street, Longmont, CO 80501, USA
b Department of Electrical and Computer Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA |
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| Abstract: | Two new modeling techniques based on principles of wavelet theory are described in this article. Macro-model and mathematical model are developed for analog and digital circuit simulation, respectively, for fast and accurate results using exponential function, damped sine wave, and linear waveform. An 8 bit DAC has been implemented to simulate and evaluate the models. The INLs of the macro and mathematical model based simulations are ±0.2LSB, which are the same as HSPICE simulation. The DNLs of HSPICE simulation, macro model, and mathematical model based simulations are ±0.22LSB, ±0.28LSB, and ±0.25LSB, respectively. The simulation times are 2.9 s for macro model, 0.15 s for mathematical model, and 68.09 s for HSPICE simulation. |
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| Keywords: | CMOS Digital-to-analog converters Dynamic and static errors Wavelet theory DAC modeling Mixed mode simulation |
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