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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A digitally self-calibrating 14-bit 10-MHz CMOS pipelined A/Dconverter
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A digitally self-calibrating 14-bit 10-MHz CMOS pipelined A/Dconverter

机译:数字自校准14位10MHz CMOS流水线A / D转换器

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A digitally self-calibrating pipelined analog-to-digital convertern(ADC) featuring 1.5-bit/stage structure is presented. The integral (INL)nand differential nonlinearity (DNL) errors are removed using a novelndigital calibration algorithm, which also eliminates missing codes thatncan occur with other calibration algorithms near the extremes of theninput range. After calibration, the measured DNL is ±0.6 LSB andnthe INL is ±2.5 LSB at the 14-bit level. Sampling at a 10-MHznrate, the chip dissipates 220 mW and (post-calibration) yields ansignal-to-noise ratio of 77 dB and a spurious-free dynamic range of 95ndB with 4.8-MHz sine wave input signal. The chip is fabricated inn0.5-Μm CMOS double-poly double-metal process, measures 3.8 mm ×n3.3 mm (150 mil × 130 mil), and operates from a single 5-V supply
机译:提出了一种具有1.5位/级结构的数字自校准流水线模数转换器(ADC)。使用新颖的数字校正算法消除了积分(INL)和微分非线性(DNL)误差,这也消除了其他校正算法可能在输入范围的极限附近出现的丢失代码。校准后,在14位电平下,测得的DNL为±0.6 LSB,而INL为±2.5 LSB。该芯片以10 MHz的速率采样,耗散220 mW的功率,并且(后校准)产生的信噪比为77 dB,正弦波输入信号为4.8 MHz时无杂散动态范围为95ndB。该芯片采用0.5μmCMOS双多晶硅双金属工艺制造,尺寸为3.8 mm×n3.3 mm(1.5亿×1.3亿),采用5 V单电源供电

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