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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A Voltage Overscaled Low-Power Digital Filter IC
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A Voltage Overscaled Low-Power Digital Filter IC

机译:电压超标低功耗数字滤波器IC

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摘要

In this brief, we present an integrated circuit implementation of a low-power digital filter in 0.35-μm 3.3-V CMOS process. The low-power technique combines voltage overscaling (VOS) and algorithmic noise tolerance (ANT) to push the limits of energy efficiency beyond that achievable by voltage scaling alone. VOS refers to scaling the supply voltage beyond the limit imposed by the throughput constraints. ANT is an algorithmic level error-control technique that is employed to restore the algorithmic performance degradation in terms of output signal-to-noise ratio (SNR) caused by VOS. Measured results indicate 40%-67% reduction in energy dissipation over optimally voltage-scaled systems with less than 1-dB loss in SNR for a wide range of filter bandwidths (0.05f{sub}s-0.25f{sub}s, where f{sub}s is the sampling frequency).
机译:在本简介中,我们介绍了采用0.35μm3.3V CMOS工艺的低功耗数字滤波器的集成电路实现。低功耗技术结合了电压超标(VOS)和算法噪声容限(ANT),使能效的极限超出了仅靠电压定标即可达到的极限。 VOS是指将电源电压调整为超出吞吐量限制所施加的限制。 ANT是一种算法级错误控制技术,可用于恢复VOS引起的输出信噪比(SNR)方面的算法性能下降。测量结果表明,在宽范围的滤波器带宽(0.05f {sub} s-0.25f {sub} s)下,最佳电压缩放系统的能耗降低了40%-67%,SNR损失小于1dB。 f {sub} s是采样频率)。

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