The method of utilizing with multiple noise attenuation band and the data converter which use the delta sigma modulation circuit, and the delta sigma modulation circuit

摘要

The pole of the 1st set which features the attenuation of noise with signal baseband of noise transfer function at least at least one pole of one which features zero points, and that it is attenuated at least the noise inside one additional zone outside zone of baseband of noise transfer function additional set the filter system which at least forms one zero points (501a and 50b) the noise shaper which it has. Attenuation band can include attenuation band in signal baseband of the aforementioned noise transfer function.