Delta-sigma modulators with integral digital low-p

专利名称：Delta-sigma modulators with integral digital

low-pass filtering

发明人：John Laurence Melanson,Heling Yi申请号：US10914917申请日：20040810公开号：US07110460B1公开日：20060919

专利附图：

摘要：A delta-sigma modulator of an order of at least three having a signal transferfunction defining a signal low-pass response, the signal transfer function has a numeratorand a denominator, the denominator defined by a product of first and second functions

defining respective first and second pole sets such that a roll-off frequency of a low-passresponse defined by the first pole set is at least twice a roll-off frequency of a low-passresponse defined by the second pole set. The delta-sigma modulator also has a noisetransfer function defining a noise high-pass response, the noise transfer function having anumerator and a denominator, the denominator defined by the product of the first andsecond functions. The numerator of the noise transfer function differs from the

numerator of the signal transfer function and characterizes the noise high-pass response.

申请人：John Laurence Melanson,Heling Yi

地址：Austin TX US,Austin TX US

国籍：US,US

代理机构：Thompson & Knight LLP

代理人：James J. Murphy

更多信息请下载全文后查看