公开(公告)号：US20170170841A1

公开(公告)日：2017-06-15

申请号：US15359240

申请日：2016-11-22

Applicant: ANALOG DEVICES, INC.

Inventor： JOSE BARREIRO SILVA ,  Donald W. Paterson

IPC: H03M3/00 ,  H03H17/02

CPC classification number: H03M3/358 ,  H03H17/0248 ,  H03H17/0294 ,  H03M3/414 ,  H03M3/458

Abstract: Typically, complex systems require a separate and expensive equalizer at the output of an analog-to-digital converter (ADC). Rather than providing a separate equalizer, the effective Signal Transfer Function (STF) of a Multi-stAge noise SHaping (MASH) ADC can be modified by leveraging available digital filtering hardware necessary for quantization noise cancellation. The modification can involves adding calculations in the software previously provided for computing digital quantization noise cancellation filter coefficients, where the calculations are added to take into account equalization as well. As a result, the signal transfer function can be modified to meet ADC or system-level signal-chain specifications without additional equalization hardware. The method is especially attractive for high-speed applications where magnitude and phase responses are more challenging to meet.

公开(公告)号：US20150288379A1

公开(公告)日：2015-10-08

申请号：US14298459

申请日：2014-06-06

Applicant: ANALOG DEVICES, INC.

Inventor： JOSE BARREIRO SILVA ,  JIALIN ZHAO ,  WENHUA W. YANG

IPC: H03M3/00

CPC classification number: H03M3/352 ,  H03M3/388 ,  H03M3/416 ,  H03M3/464 ,  H03M3/466

Abstract: The present disclosure describes a mechanism to digitally correct for the static mismatch of the digital-to-analog converter (DAC) in at least the first-stage of a multi-stage noise shaping (MASH) analog-to-digital converter (ADC). The correction is applicable to continuous-time implementations, and is especially attractive for high-speed applications.

Abstract translation: 本公开描述了在多级噪声整形（MASH）模数转换器（ADC）的至少第一级数字校正数模转换器（DAC）的静态失配的机制， 。 该校正适用于连续时间实现，对于高速应用特别有吸引力。