文件名称:
A 100-MHz, 16-b, Direct Digital
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文件大小: 564kb
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上传时间: 2011-07-26
详细说明: Abstract—This paper describes the architecture and the IC implementation of a direct digital frequency synthesizer (DDFS) that is based on an angle rotation algorithm (similar to CORDIC). It is shown that the architecture can be implemented as a multiplierless, feedforward, and easily pipelineable datapath. A prototype IC has been designed, fabricated in 1.0-m CMOS, and tested. The IC produces 16-b sine and cosine outputs with a spurious-free dynamic range of more than 100 dBc. A 36-b frequency control word gives a tuning resol ution of 0.0015 Hz at a 100-MHz sampling rate. ...展开收缩
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