A 3 V linear input range tunable CMOS transconductor and its application to a 3.3 V 1.1 MHz Chebyshev low-pass Gm-C filter for ADSL

J. Lee, C. Tu, Wei-Hong Chen
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引用次数: 15

Abstract

A fully differential CMOS transconductor with 3 V linear input range is proposed. The Gm value of the transconductor is tunable through a current division scheme. A current mode arithmetic method is used to adaptively bias the transconductor tuning stage. A 3.3 V 1.1 MHz Chebyshev low-pass Gm-C filter using this highly linear transconductor achieves a IM3 distortion at 300 kHz of -62 dBc for a 2 Vppd input signal. The filter was fabricated with a double poly triple metal 0.35 /spl mu/m CMOS process and consumes 66 mW.
一种3v线性输入可调CMOS晶体管及其在3.3 V 1.1 MHz切比雪夫低通Gm-C ADSL滤波器上的应用
提出了一种线性输入范围为3v的全差分CMOS晶体管。该晶体管的Gm值可通过电流分割方案进行调节。采用电流模式算法自适应偏置晶体管调谐级。3.3 V 1.1 MHz切比舍夫低通Gm-C滤波器采用这种高线性变换器,对于2 Vppd的输入信号,可实现300 kHz -62 dBc的IM3失真。该滤波器采用双聚三金属0.35 /spl mu/m CMOS工艺制作,功耗为66 mW。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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