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Title: A Low-Power Direct Digital Frequency Synthesiser
Authors: Yi, S.-C.;Chen, J.-J.;Lin, C.-H.;Lee, K.-T.
Contributors: 積體電路設計研究所
Keywords: Direct Digital Frequency Synthesiser (DDFS)
Frequency Synthesiser
Lookup Table ROM
Digital Circuit Design
Date: 2008-01
Issue Date: 2010-11-12T07:20:28Z
Abstract: We present a low-power sine-output Direct Digital Frequency Synthesizer (DDFS) realized in 0.18 μm CMOS that achieves 60 dBc spectral purity from DC to the Nyquist frequency. No ROM or multipliers are used, but an external DAC is required if an analog output is desired. Power consumption is 10 mW for a 100 MHz clock, which is significantly less than figures reported previously. System complexity is greatly reduced by using an efficient linear interpolation scheme to approximate a sinusoid function. This has resulted in silicon area utilization of 0.011
mm2. The design would be suitable as an IP core in a low power digital RF transceiver ASIC.
Relation: International Journal of Electronics, 95(6), 2008:593-599(DOI: 10.1080/00207210802155776
Appears in Collections:[Graduate Institute of Integrated Circuit Design] Periodical Articles

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