首页> 外文会议>Eighth European Solid-State Circuits Conference (ESSCIRC '82) >Is There Life Beyond 14-Bits in A/D and D/A Conversion ?
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Is There Life Beyond 14-Bits in A/D and D/A Conversion ?

机译:A / D和D / A转换中是否还有14位以外的内容?

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摘要

Several high-resolution A/D and D/A converters such as "dual" slope conversion, delta modulation, R/2R ladder networks with trimming or adaptive adjustment procedures and "dynamic element matching" are discussed. Special attention is paid to dynamic characteristics like signal-to-noise ratio, linearity, distortion and "glitch"-free operation. In complete A/D and D/A conversion systems the anti-aliasing filters must not be forgotten and form part of the total system. Partitioning of the conversion problem into a digital signal processing part, including oversampling and digital filtering, and a converter part improves the system performance. In D/A converters an increase in resolution of 18 to 20 bits can be realized with a linear phase characteristic, while in A/D converters this maximum is at the 16 to l8 bits level. Noise in the sample-and-hold function is the limiting factor in A/D converter systems.
机译:讨论了几种高分辨率A / D和D / A转换器,例如“双”斜率转换,增量调制,具有微调或自适应调整程序的R / 2R梯形网络以及“动态元素匹配”。要特别注意动态特性,例如信噪比,线性,失真和“无毛刺”操作。在完整的A / D和D / A转换系统中,一定不能忘记抗混叠滤波器,它是整个系统的一部分。将转换问题分成包括过采样和数字滤波的数字信号处理部分,以及转换器部分可以提高系统性能。在D / A转换器中,具有线性相位特性可以实现18至20位分辨率的提高,而在A / D转换器中,最大值在16至18位的水平。采样保持功能中的噪声是A / D转换器系统中的限制因素。

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