12b105msample /s, 850mw模数转换器

C. Michalski
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引用次数: 5

摘要

该模数转换器的最小采样率为105 Msample/S,总功耗为850 mW,有效位数为11.0(信噪比=68 dB), SFDR >80 dB,采样模拟输入频率高达70 MHz。该转换器采用每级多比特的开关电容架构,并集成了片上差分输入缓冲器、专用磁道/保持放大器和内部补偿的宽带差分参考放大器。该转换器采用0.6 /spl μ m的BiCMOS工艺制作。
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A 12 b 105 Msample/s, 850 mW analog to digital converter
This analog-to-digital converter achieves a minimum sampling rate of 105 Msample/S at a total power dissipation of 850 mW while achieving 11.0 effective number of bits (SNR=68 dB) and an SFDR of >80 dB for sampling analog input frequencies up to 70 MHz. The converter uses a switched capacitor multi-bit per stage architecture and incorporates an on-chip differential input buffer, a dedicated track/hold amplifier and an internally compensated wideband differential reference amplifier. The converter is fabricated on a 0.6 /spl mu/m BiCMOS process.
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