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A switching strategy that explores the use of redundant current sources is proposed to realize a signal\u2010independent element transition rate, ie, the number of switching activities during the transition of successive sampling clock cycles. With a certain number of redundant current sources, this strategy significantly reduces the intersymbol interference distortions without oversampling operation or causing signal attenuation, which makes it appealing for high\u2010speed applications. As analyzed in this paper, the number of required redundant current sources is scalable for different bandwidth requirement in specific applications, leading to 3 redundancy\u2010bandwidth scalable trade\u2010offs between the cost from redundant current sources and the high\u2010dynamic\u2010range bandwidth. In implementation, we propose a custom\u2010designed decoder, named as the overlap\u2010controlled data\u2010weighted averaging (OC\u2010DWA). Compared with the existing similar\u2010purpose designs, the proposed OC\u2010DWA decoder realizes the current sources selection with a simple barrel rotator, which is of much lower hardware complexity and energy consumption. Simulations of a digital\u2010to\u2010analog converter with this decoder exhibit an enhanced dynamic range over the entire Nyquist band, which verifies the redundancy\u2010bandwidth scalability of the proposed techniques.<\/jats:p>","DOI":"10.1002\/cta.2466","type":"journal-article","created":{"date-parts":[[2018,4,23]],"date-time":"2018-04-23T08:54:52Z","timestamp":1524473692000},"page":"1006-1027","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Redundancy\u2010bandwidth scalable techniques for signal\u2010independent element transition rates in high\u2010speed current\u2010steering DACs"],"prefix":"10.1002","volume":"46","author":[{"ORCID":"http:\/\/orcid.org\/0000-0001-8654-3695","authenticated-orcid":false,"given":"Longqiang","family":"Lai","sequence":"first","affiliation":[{"name":"Department of Electronic Engineering Tsinghua University Beijing China"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-8051-3345","authenticated-orcid":false,"given":"Xueqing","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering Tsinghua University Beijing China"}]},{"given":"Huazhong","family":"Yang","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering Tsinghua University Beijing China"}]}],"member":"311","published-online":{"date-parts":[[2018,4,23]]},"reference":[{"key":"e_1_2_8_2_1","unstructured":"LinW\u2010T KuoT\u2010H.A 12b 1.6 GS\/s 40 mW DAC in 40 nm CMOS with >70 dB SFDR over entire Nyquist bandwidth. 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