基于亚阈值MIFG MOS晶体管的低频、低于1.5 v的微功率G/sub m/ c滤波器

Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005. Pub Date : 2005-12-05 DOI:10.1109/ESSCIR.2005.1541627

A. E. Mourabit, G. Lu, P. Pittet

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引用次数: 12

摘要

我们提出了一种低于1.5 v的微功率滤波器，具有极低的可调截止频率。它由使用亚阈值MIFG(多输入浮栅)MOS晶体管的低g /sub /和宽线性范围OTA组成。实现了一种基于三次失真项消去的线性化技术。采用0.8-/spl mu/m CMOS工艺设计的滤波器可以在低至1.2V的电源电压V/sub / dd下工作。当V/sub dd/ = 1.5V时，滤波器线性范围为1.1 Vpp (THD < 1%)，调谐范围为0.5 ~ 200Hz，功耗低于2/spl mu/W。

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A low-frequency, sub 1.5-V micropower G/sub m/-C filter based on subthreshold MIFG MOS transistors

We present a sub-1.5V and micropower filter with very low and tunable cut off frequency. It consists of low-G/sub m/ and wide-linear-range OTA using subthreshold MIFG (multiple input floating gate) MOS transistors. A linearization technique based on cancellation of cubic distortion term is implemented. The filter designed in a 0.8-/spl mu/m CMOS process can operate under a supply voltage V/sub dd/ as low as 1.2V. For V/sub dd/ = 1.5V, the filter has a linear range of 1.1 Vpp (with THD < 1%) and a tuning range from 0.5 to 200Hz, with power dissipation below 2/spl mu/W.

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Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005.

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