公开(公告)号：US20130234871A1

公开(公告)日：2013-09-12

申请号：US13787718

申请日：2013-03-06

申请人： XW, LLC D/B/A XTENWAVE

发明人： Oren E. Eliezer ,  Ryan Lobo ,  Mark Appel

IPC分类号： H03M1/10

CPC分类号： H03M1/1009 ,  H03M1/66

摘要： Cost-effective structures and methods that allow an integrated digital-to-analog converter (DAC) to simultaneously achieve wide dynamic ranges and bandwidths through the use of built-in measurement and compensation mechanisms that are primarily digital. The measurements of the DAC's distortions are made with a relatively simple analog-to-digital converter (ADC) that is not designed to accommodate the combination of the bandwidth and the resolution offered by the DAC, but is nonetheless sufficient in determining the characteristics of the DAC's impairments during a calibration procedure. This information is then used in a feed-forward compensation system during the DAC's normal operation to estimate and cancel the distortions in its output signal that could result from the various impairments.

摘要翻译： 经济高效的结构和方法，允许集成的数模转换器（DAC）通过使用主要是数字的内置测量和补偿机制来同时实现宽动态范围和带宽。 DAC的失真测量是通过一个相对简单的模数转换器（ADC）进行的，该转换器不是为了适应DAC提供的带宽和分辨率的组合而设计的，但是在确定 DAC在校准过程中的损伤。 然后，在DAC正常运行期间，该信息用于前馈补偿系统，以估计和消除可能由各种损伤引起的输出信号中的失真。