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Low Voltage, Low Power Gm-C Filter for Low Frequency Applications

机译:低电压,低功率 G m -c滤波器用于低频应用

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摘要

This paper describes a low voltage, low power Transconductance-C (G_(m) -C) filter for low frequency applications. A tunable bulk-driven transconductor is proposed to realize the filter. The transconductance (G _(m)) is tunable from 8 nS to 90 nS, which issuitable for low frequency G_(m) -C filters. The transconductor consumes a power of 86 nW. To evaluate the performance of the proposed transconductor, a 2nd order Butterworth low pass filter (LPF) is designed. The cutoff frequency of the filter is tunable from 74 Hz to 820 Hz.The filter offers a dynamic range of 52 dB while consuming a power of 248 nW for a nominal cutoff frequency of 456 Hz. The circuit has been designed and simulated in UMC 180 nm technology with a supply voltage of 0.5 V.
机译:本文介绍了低频应用的低电压,低功率跨导-C( G_(m)-c)滤波器。 提出可调谐散装的跨导体以实现过滤器。 跨导( g _(m))可从8 ns到90ns调音,该90ns,其可用于低频 g_(m)-c滤波器。 跨导体消耗86 NW的功率。 为了评估所提出的跨导体的性能,设计了第二阶Butterworth低通滤波器(LPF)。 滤波器的截止频率可从74 Hz到820 Hz调音。过滤器提供52 dB的动态范围,同时消耗248 NW的功率,用于456 Hz的标称截止频率。 该电路已经在UMC 180nm技术中设计和模拟,电源电压为0.5V。

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