TIME-INTERLEAVED OVERSAMPLING A D CONVERTERS - THEORY AND PRACTICE/

In this paper, the design procedure and practical issues regarding the realization of time-interleaved oversampling converters are presented , Using the concept of block digital filtering, it is shown that arbit rary Delta Sigma topologies can be converted into corresponding time-i nterleaved structures, Practical issues such as finite opamp gain, mis matching, and de offsets are addressed, analyzed, and practical soluti ons to overcome some of these problems are discussed, To verify the th eoretical results, a discrete-component prototype of a second-order ti me-interleaved Delta Sigma analog/digital (A/D) converter has been imp lemented and the design details as well as experimental results are pr esented.