CAJ | 학술논문

介绍了一种用于400 MSPS 16位高精度电流舵D/A转换器的数字静态校准技术.该校准技术利用地址产生器、钟控比较器、SAR寄存器和校准DAC,构成逐次逼近式校准环路.利用该校准环路,可以自动完成高7位电流源阵列单元的校准,从而极大地提高电流源的匹配性.采用该校准技术的16位电流舵D/A转换器的DNL大于±0.5 LSB,达到了真正的16位精度.
개소료일충용우400 MSPS 16위고정도전류타D/A전환기적수자정태교준기술.해교준기술이용지지산생기、종공비교기、SAR기존기화교준DAC,구성축차핍근식교준배로.이용해교준배로,가이자동완성고7위전류원진렬단원적교준,종이겁대지제고전류원적필배성.채용해교준기술적16위전류타D/A전환기적DNL대우±0.5 LSB,체도료진정적16위정도.
A digital static calibration technique for 400 MSPS 16-bit high-resolution current steering D/A converter was described. In this technique, address generator, clock controlled comparator, SAR register and calibration DAC was used to form a successive approximation calibration loop, with which calibration of current source array units could be automatically accomplished one by one, thus greatly improving matchability of current source. The 16-bit current steering D/A converter using this calibration technology had a DNL greater than ±0.5 LSB, achieving a true 16-bit relative static resolution.