公开(公告)号：US20040233081A1

公开(公告)日：2004-11-25

申请号：US10781570

申请日：2004-02-18

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Giovanni Cesura ,  Andrea Panigada ,  Nadia Serina

IPC: H03M001/06 ,  H03M003/00 ,  H03M001/36

CPC classification number: H03M3/356 ,  H03M3/424 ,  H03M3/438

Abstract: An analog-to-digital converter (200) includes at least one stage (105) for converting an analog input signal into a digital output signal using a parallel quantizer (115) comparing the analog input signal with a plurality of threshold values in parallel. The analog-to-digital converter includes, for at least one selected stage (105), an estimating circuit (210,220) for estimating an analog correction signal indicative of the mean value of a quantization error of the selected stage, and a compensating circuit (440i) for at least partially compensating an offset error of the parallel quantizer (105) in the selected stage according to the analog correction signal. A method and computing system are also provided.

Abstract translation: 模拟数字转换器（200）包括至少一个级（105），用于使用并行量化器（115）将模拟输入信号转换成数字输出信号，并行量化器（115）将模拟输入信号与多个阈值进行并行比较。 对于至少一个所选择的级（105），模数转换器包括用于估计指示所选级的量化误差的平均值的模拟校正信号的估计电路（210,220），以及补偿电路 440i），用于根据模拟校正信号至少部分地补偿所选择的级中的并行量化器（105）的偏移误差。 还提供了一种方法和计算系统。