Dual-mode delta-sigma analog to digital converter system and method

申请公布号：US7164376(B2)

申请号：US20050271440

申请日期：2005.11.10

申请公布日期：2007.01.16

申请人：

ANALOG DEVICES, INC.

发明人：GEALOW JEFFREY;FERGUSON, JR. PAUL

分类号：H03M3/00

主分类号：H03M3/00

摘要：A dual-mode delta-sigma analog to digital converter system is disclosed that uses a feed forward modulator and includes a low frequency resonator circuit and a high frequency resonator circuit and includes a feed-forward path from the final integrator in the high-frequency resonator circuit to a summer. The digital converter system includes a selection unit for permitting the high frequency resonator circuit and the low frequency resonator circuit to be employed in a first mode of operation. The system also permits the high frequency resonator circuit and the feed-forward path from the final integrator in the high-frequency resonator circuit to the summer to be disabled in a second mode of operation.

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