带通/spl Delta//spl Sigma/ rf dac，内置FIR重构滤波器

2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers Pub Date : 2006-09-18 DOI:10.1109/ISSCC.2006.1696300

Shahin Mehdizad Taleie, T. Copani, B. Bakkaloglu, S. Kiaei

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引用次数: 11

摘要

提出了一个1b带通DeltaSigma DAC，其后是一个电流转向FIR重构滤波器和一个嵌入式上转换混频器。RF DAC采用0.25 μ m数字CMOS实现，可用于低功率数字中频发射器，无需跨阻级和单独混频器。RF DAC从2.5V电源吸收49mA，在1.03GHz下实现-64.7dBc IM3，在15MHz带宽下实现72dB的SFDR

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A Bandpass /spl Delta//spl Sigma/ RF-DAC with Embedded FIR Reconstruction Filter

A 1b bandpass DeltaSigma DAC followed by a current steering FIR reconstruction filter and an embedded up-conversion mixer is presented. The RF DAC is implemented in 0.25mum digital CMOS, can be used in low-power digital-IF transmitters and eliminates the need for a transimpedance stage and a separate mixer. The RF DAC draws 49mA from a 2.5V supply, achieving -64.7dBc IM3 at 1.03GHz with an SFDR of 72dB in a 15MHz bandwidth

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2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers

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