UC知道毕业翻译 各位英语达人帮个忙
来源：百度知道 编辑：UC知道 时间：2024/06/06 14:53:41
先谢谢啦
Sigma-delta
The sigma-delta ADC architecture is capable of much
higher resolution than the SAR. The typical range is 16 to
24 bits. The tradeoff comes in the form of slower sampling
speeds. The sigma delta architecture’s sampling
speed is limited to approximately 100 ksps. Sigma-delta
converters use a technique called oversampling that is
based on the theory that a very fast, low-resolution converter
can be used to take a large number of samples on
an analog signal. The outputs from this oversampling
process are then combined into groups, and the groups
are averaged using a digital filter like an accumulatoradder.
This averaging operation can increase the accuracy
of the conversion as long as the input signal does not vary
any faster than the sampling rate. This process also eliminates
any in-band noise present in the ADC by spreading
the noise across the entire sampling frequency band.
Sigma-delta
The sigma-delta ADC architecture is capable of much
higher resolution than the SAR. The typical range is 16 to
24 bits. The tradeoff comes in the form of slower sampling
speeds. The sigma delta architecture’s sampling
speed is limited to approximately 100 ksps. Sigma-delta
converters use a technique called oversampling that is
based on the theory that a very fast, low-resolution converter
can be used to take a large number of samples on
an analog signal. The outputs from this oversampling
process are then combined into groups, and the groups
are averaged using a digital filter like an accumulatoradder.
This averaging operation can increase the accuracy
of the conversion as long as the input signal does not vary
any faster than the sampling rate. This process also eliminates
any in-band noise present in the ADC by spreading
the noise across the entire sampling frequency band.
比总和三角形ADC建筑能很多高分辨率的总和三角形特别行政区。 典型的范围是16到24 位。 交换以更慢的取样的速度的形式来。 总和三角形建筑取样的速度局限于大约100 ksps。 总和三角形变换器基于这个理论那个的oversampling一迅速， 低分辨率变换器能用来在一个模拟信号上带一个大的样品号。来自这个oversampling 过程的生产然后合并成组，并且组被象accumulatoradder一样使用一台数字滤波器平均。 只要输入信号不变化得比取样率快一点，这次平均的操作能增加变换的准确。 这个过程也通过穿过整个抽样率频带传播噪音消除存在于ADC的任何带内噪音。