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题名: A direct digital frequency synthesizer with fourth-order phase domain Delta Sigma noise shaper and 12-bit current-steering DAC
作者: Dai FF;  Ni WN;  Yin S;  Jaeger RC
发表日期: 2006
摘要: This paper presents a direct digital frequency synthesizer (DDFS) with a 16-bit accumulator, a fourth-order phase domain single-stage Delta Sigma interpolator, and a 300-MS/s 12-bit current-steering DAC based on the Q(2) Random Walk switching scheme. The Delta Sigma interpolator is used to reduce the phase truncation error and the ROM size. The implemented fourth-order single-stage Delta Sigma noise shaper reduces the effective phase bits by four and reduces the ROM size by 16 times. The DDFS prototype is fabricated in a 0.35-mu m CMOS technology with active area of 1.11 mm(2) including a 12-bit DAC. The measured DDFS spurious-free dynamic range (SFDR) is greater than 78 dB using a reduced ROM with 8-bit phase, 12-bit amplitude resolution and a size of 0.09 mm(2). The total power consumption of the DDFS is 200)mW with a 3.3-V power supply.
KOS主题词: Analog multipliers;  data conversion;  Delta modulation;  Frequency synthesizers;  integrated circuit design;  Delta modulation;  D/A converter
刊名: IEEE JOURNAL OF SOLID-STATE CIRCUITS
专题: 中国科学院半导体研究所(2009年前)_期刊论文

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推荐引用方式:
Dai FF; Ni WN; Yin S; Jaeger RC .A direct digital frequency synthesizer with fourth-order phase domain Delta Sigma noise shaper and 12-bit current-steering DAC ,IEEE JOURNAL OF SOLID-STATE CIRCUITS,2006,41(4):839-850
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