A complementary metal-oxide semiconductor digitally programmable current conveyor

被引：20
作者：
Alzaher, Hussain [1 ]
Tasadduq, Noman [1 ]
Al-Ees, Osama [1 ]
Al-Ammari, Fares [1 ]
机构：
[1] King Fahd Univ Petr & Minerals, Dept Elect Engn, Dhahran 31261, Saudi Arabia
来源：
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS | 2013年 / 41卷 / 01期
关键词：
current-mode circuits; current conveyor; CMOS analog filter design; digitally programmable devices; mixed signals processing; CURRENT-MODE FILTERS; UNIVERSAL FILTER; DESIGN;
D O I：
10.1002/cta.786
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 second-generation current conveyor with digitally programmable current gains is presented. A current division network with zero standby power consumption is utilized in two different ways to provide both gain and attenuation of the second-generation current conveyor's current transfer characteristics. The proposed topology overcomes several drawbacks of the previous solutions through affording a more power and area efficient solution while exhibiting relatively wider tuning range and bandwidth. A variable-gain amplifier and a two-integrator-loop filter biquad providing low-pass and band-pass responses are given as application examples. A modified two-integrator-loop topology is developed to offer independent control of the pole frequency and quality factor without disturbing the passband gain. Simulation results obtained from a standard 0.18 mu m complementary metaloxide semiconductor process are given. Copyright (C) 2011 John Wiley & Sons, Ltd.
引用
收藏
页码：69 / 81
页数：13
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