A Fully Differential RC Calibrator for Accurate Cut-off Frequency of a Programmable Channel Selection Filter

被引：1

作者：

Nam, Ilku ^{[1
,2
]}

Choi, Chihoon ^{[1
,2
]}

Lee, Ockgoo ^{[1
,2
]}

Moon, Hyunwon ^{[3
]}

机构：

[1] Pusan Natl Univ, Dept Elect Engn, Busan 609735, South Korea

[2] Pusan Natl Univ, PNU LG Smart Control Ctr, Busan 609735, South Korea

[3] Daegu Univ, Sch Elect & Elect Engn, Gyongsan 712714, South Korea

来源：

JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE | 2016年 / 16卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

Channel selection filter; CMOS; cut-off frequency; RC calibrator; ACTIVE-FILTERS;

D O I：

10.5573/JSTS.2016.16.5.682

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A fully differential RC calibrator for accurate cut-off frequency of a programmable channel selection filter is proposed. The proposed RC calibrator consists of an RC timer, clock generator, synchronous counter, digital comparator, and control block. To verify the proposed RC calibrator, a six-order Chebyshev programmable low-pass filter with adjustable 3 dB cut-off frequency, which is controlled by the proposed RC calibrator, was implemented in a 0.18-mu m CMOS technology. The channel selection filter with the proposed RC calibrator draws 1.8 mA from a 1.8 V supply voltage and the measured 3 dB cut-off frequencies of the channel selection LPF is controlled accurately by the RC calibrator.

引用

页码：682 / 686

页数：5

共 35 条

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