10ndarvuga. Eelpool toodud seitsme 2ndjärgu abil õnnestub esitada arve kuni väärtuseni 127 : 64 + 32 + 16 + 8 + 4 + 2 + 1 = 12710 = 1 1 1 1 1 1 12 /¯¯ ülesanne: ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ /¯¯ ülesanne: ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ T T Ü
When the ADC starts the conversion, the input voltage is 2.3v. This should result in an output code of 117 (decimal) or 75 (hex). The SAR register sets the MSB, making the internal DAC voltage 2.5v. Since the signal is below 2.5v, the SAR resets bit 7 and sets bit 6 on the next clock. The ADC “chases” the input signal, Digital-to-Analog Converters 27 ending up with a final result of 12710 (7F16). The actual voltage at the end of the conversion is 2.8v, corresponding to a code of 14310 (8F16). The final code out of the ADC (127d) corresponds to a voltage of 2.48V. This is neither the starting voltage (2.3v) nor the ending voltage (2.8v). This example used a relatively fast input to show the effect; a slowly changing input has the same effect, but the error will be smaller. One way to reduce these errors is to place a low-pass filter ahead of the ADC
134282 23816-1 Kurtna vana 59.22989824.735696 134282 Saku vald 134283 23817-1 Kurtna vana 59.22993624.735546 134283 Saku vald 29348 4400335-1Kuru 58.99878727.281478 29348 Iisaku vald 29349 4400334-1Kuru 58.99862427.282160 29349 Iisaku vald 32965 4400336-1Kuru II 58.99868027.276829 32965 Iisaku vald 32966 4400337-1Kuru II 58.99860827.276727 32966 Iisaku vald 12709 23285-1 Kurvi 59.30253024.638556 12709 Saku vald 12710 23286-1 Kurvi 59.30218024.640358 12710 Saku vald 30019 7800344-1Kurvi 58.17961726.513715 30019 Nõo vald 21721 7800343-1Kurvi 58.17993726.513843 21721 Nõo vald 138130 47344-1 Kurvi tee 59.34204224.555001 138130 Saue vald 25496 6500238-1Kurvitsa 57.96462326.683444 25496 Kanepi vald 88444 6500237-1Kurvitsa 57.96455426.683514 88444 Kanepi vald 21207 8600235-1Kusma 57.78753626.950688 21207 Võru vald 21208 8600234-1Kusma 57
1765 12641 2/22/2011 Low 24 1766 12642 4/27/2009 Critical 10 1767 12642 4/27/2009 Critical 14 1768 12643 3/19/2010 Low 22 1769 12676 1/15/2009 High 25 1770 12704 2/9/2010 Low 44 1771 12704 2/9/2010 Low 28 1772 12706 11/20/2009 Critical 46 1773 12707 5/29/2010 High 20 1774 12708 1/7/2010 Low 44 1775 12710 8/17/2010 Critical 37 1776 12711 2/19/2012 Critical 32 1777 12711 2/19/2012 Critical 45 1778 12736 3/8/2010 Low 2 1779 12743 6/23/2010 High 39 1780 12768 4/8/2009 Critical 34 1781 12771 1/17/2009 Critical 40 1782 12771 1/17/2009 Critical 46 1783 12773 1/11/2011 Low 6 1784 12773 1/11/2011 Low 15 1785 12773 1/11/2011 Low 19
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