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Discussion Groups
Discussion Groups | Freescale DSPs | migrating from 56F803 to 56F8346
Technical discussions about Freescale (Motorola) DSPs (including the DSP56000, DSP56300, DSP56600, 56800 DSPs).
migrating from 56F803 to 56F8346 - thomaskracke - Feb 6 23:19:00 2004
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Hallo DSP'lers, I did a project in the past with the 56F803. Now I'm looking for a better replacement: I need - a better ADC - more speed Does anybody know if the ADC in the 56F8346 is really better than the ADC in the 56F803? I read something about internal calibration? How good is the internal reference-voltage of the ADC? Is the ADC a complete re-design or is it the old one of the 56F803? Thank you very much! Thomas |
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Re: migrating from 56F803 to 56F8346 - Michael W. Mann - Feb 9 16:50:00 2004
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--- In , "thomaskracke" <thomaskracke@y...> wrote: > Hallo DSP'lers, > > I did a project in the past with the 56F803. > Now I'm looking for a better replacement: > > I need > - a better ADC > - more speed > > Does anybody know if the ADC in the 56F8346 is really better than the > ADC in the 56F803? It is better. > I read something about internal calibration? There is a built-in voltage divider network, providing two data points (Vref*0.25 and Vref*0.75), which can be used for calibration. The utility of this feature to you depends on your application. > How good is the internal reference-voltage of the ADC? It is improved over the 80x series. > Is the ADC a complete re-design or is it the old one of the 56F803? The ADC module in the 56F8300 series is a redesign of the 80x series incorporating lessons learned. It offers more consistent performance over temperature and ADC clock speed. The ADC module offers additional features, such as smart power-down/Power-up to/from low power modes. > Thank you very much! > > Thomas |
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