| 基于多输出端电流模式全差分积分器的梯形滤波器实现 |
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| 引用本文： | 江金光,何怡刚,吴杰.基于多输出端电流模式全差分积分器的梯形滤波器实现[J].电路与系统学报,2002,7(1):5-8. |
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| 作者姓名： | 江金光 何怡刚 吴杰 |
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| 作者单位： | 湖南大学,电气与信息工程学院,湖南,长沙,410082 |
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| 基金项目： | 教育部科学技术研究重点项目(No. 99090)，教育部高等学校骨干教师资助计划项目(教文技司[2000]65号文) |
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| 摘 要： | 本文提出了利用低电压多输出端电流模式全差分积分器（MCDI）综合连续时间电流模式滤波器的方法。首先对所设计的无源梯形滤波器用信号流图形（SFG）进行综合，然后用MCDI实现该SFG，分析并模拟了MCDI及所提出的滤波器的特性，应用3.3V、0.5μm、CMOS工艺参数仿真得到的1dB波纹四阶Chebyshev低通滤波器功耗仅为1mW左右，且其截止频率可在很宽的范围内调控，此外，这种滤波器还具有结构简单，对称性好，失真小等优点，适于全集成。
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| 关 键 词： | 多输出端 电流模式 全差分积分器 梯形滤波器 |
| 文章编号： | 1007-0249(2002)01-0005-04 |
| 修稿时间： | 2001年6月12日 |
Realization of ladder Filter Based on MCDI |
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| JIANG Jin-guang,HE Yi-gang,Wu Jie.Realization of ladder Filter Based on MCDI[J].Journal of Circuits and Systems,2002,7(1):5-8. |
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| Authors: | JIANG Jin-guang HE Yi-gang Wu Jie |
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| Abstract: | A methodology to synthesize continuous-time current-mode filters using low voltage MCDI is presented. At first, the designed passive ladder filters are synthesized according to signal flow chart (SFG), secondly, the signal flow chart is realized by employing MCDI. the characteristics of MCDI and proposed filters are analyzed and simulated. Simulation results not only predict 1dB pass-band ripple 4th-order Chebyshev low-pass filter dissipating as little as 1mW power or so with 3.3V power supply using 0.5mm CMOS technology, While the cut-off frequency of which can be tuning in a wide range, but also with the advantages such as simple sturcture, good symmetry, low harmonic distortion, It is suitable for integration. |
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| Keywords: | Fully differential Low-voltage low-power Current-mode integrator Continuous-time filter |
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