A CMOS continuous-time Gm-C filter and programmable gain amplifier for WPAN receivers

被引：0

作者：

Moon, YK ^{[1
]}

Seo, HM ^{[1
]}

Won, KH ^{[1
]}

Park, YK ^{[1
]}

Yoon, MH ^{[1
]}

Yoo, JJ ^{[1
]}

Kim, SD ^{[1
]}

机构：

[1] Korea Elect Technol Inst, Ubiquitous Comp Res Ctr, Sungnam, Kyunggi, South Korea

来源：

2005 6th International Conference on ASIC Proceedings, Books 1 and 2 | 2005年

关键词：

channel selection filters; DC offset; programmable gain amplifier; tuning circuit;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper describes a low-voltage and low-power channel selection analog front end with continuous-time low pass filters and highly linear programmable-gain amplifier(PGA). The filters were realized as balanced Gm-C biquadratic filters to achieve low current consumption. High linearity and constant wide bandwidth are achieved by using a new transconductance(Gm) cell The PGA has a voltage gain varying from 0 to 65dB, while maintaining a constant bandwidth. A filter tuning circuit that requires an accurate time base but no external components is presented. With a 1-Vrms differential input and output, the filter achieves -85dB THD and a 78dB signal-to-noise ratio. Both the filter and PGA were implemented in a 0.18um 1P6M n-wel/ CMOS process. They consume 3.2mW from a 1.8V power 2 supply and occupy an area of 0.19mm(2).

引用

页码：592 / 595

页数：4

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