Methods and apparatus for correction of higher order delta sigma convertors
Номер патента: EP1157471A1
Опубликовано: 28-11-2001
Автор(ы): John Laurence Melanson
Принадлежит: Audiologic Inc
Опубликовано: 28-11-2001
Автор(ы): John Laurence Melanson
Принадлежит: Audiologic Inc
Реферат: A technique for correcting higher order delta sigma modulators (204, 300) in audio components, which use mutually nonlinar feedback and feed forward functions (136, 138, 140, 142, 214, 216, 218, 200, 324, 326, 328, 330, 332, 1202, 1204). Methods and apparatus are provided to correct jitter and spread in the delta sigma converter due to quantization error, to permit the processing of data streams entering the converter at a different clock rate from that of the modulator, and to permit step up ratios to be changed on the fly in order to reduce radio frequency interference from the output signal.
Method and system of integrating a mismatch noise shaper into the main loop of a delta-sigma modulator
Номер патента: WO2004017522A1. Автор: John Laurence Melanson. Владелец: Cirrus Logic, Inc.. Дата публикации: 2004-02-26.