Abstract:A novel gain-tunable output bu®er for audio-DAC is proposed in this paper. With this proposed architecture, the common-mode output voltage can be independent of gain variation. In practical applications, supply voltage might change. With this proposed architecture, the common-mode output voltage could be set separately, to guarantee that it stays in the mid-scale position of the supply. Therefore, the ability of reaching the maximum output swing for the bu®er features the proposed architecture. In addition, th… Show more
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