In this brief, Nyquist-rate current-steering digital-to-analog converters (DACs) applying the random multiple data-weighted averaging (RMDWA) technique and the QNrotated walk switching scheme are proposed such that high spurious-free dynamic range (SFDR) and small maximum output error can be achieved without calibrations, which are area and power consuming. RMDWA suppresses the harmonics caused by element mismatches to gain high SFDR performance. Furthermore, QNrotated walk can lower the maximum output error when RMDWA and QNrotated walk are employed simultaneously. Because the benefits of both dynamic element matching technique and switching scheme are obtained by the proposed DAC structure, the proposed structure can deliver smaller maximum output errors than traditional randomization techniques even if a low-cost small-area DAC with poor matching property is adopted.
|頁（從 - 到）||1264-1268|
|期刊||IEEE Transactions on Circuits and Systems II: Express Briefs|
|出版狀態||Published - 2006 十一月|
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering