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1 Analog Applications JournalNovember 1999 Analog and Mixed-Signal ProductsPrecision voltage referencesIntroductionOne reason why designing a data conversion system issuch a challenge is the fact that the system accuracy verymuch depends on the accuracy of the voltage establishedby the internal or external DC voltage reference . Thevoltage reference is used to produce a precise value ofoutput voltage for setting the full-scale input of the dataconversion system. In an analog-to-digital converter(ADC), the DC voltage reference together with the analoginput signal is used to generate the digitized output in a digital-to-analog converter (DAC), the DACselects and produces an analog output from the DC refer-ence voltage according to the digital input signal presentedat the input of the D
1 Analog Applications Journal November 1999 Analog and Mixed-Signal Products Precision voltage references Introduction One reason why designing a data conversion system is such a challenge is the fact that the system accuracy very
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