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A 200MHz low-power direct digital frequency synthesizer based on mixed structure of angle rotation

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4 Author(s)
Wan Shuqin ; Sch. of Inf. Eng., Jiangnan Univ., Wuxi, China ; Huang Yiding ; Zang Kaihong ; Yu Zongguang

Direct digital frequency synthesizer(DDS) is a new technology for frequency synthesis. This paper describers the implementation of a direct digital frequency employs a new architecture in 0.35 ¿m CMOS technology. The first rotation implementer by using a CORDIC realized in pipeline and carry-save arithmetic. The directions of the CORDIC rotations are computed in parallel by using a little lookup table, for the first rotation. In order to reduce the circuit latency and increase the speed, the final rotation is multiplier-based, employing CMOS-DPL logic. The final circuit experiment results show the power dissipation as low as 1.44mW/MHz and the maximum clock frequency 200 MHZ.

Published in:

ASIC, 2009. ASICON '09. IEEE 8th International Conference on

Date of Conference:

20-23 Oct. 2009

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