| MOS器件失配对开关电流滤波器的影响 |
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| 引用本文： | 孟相如,邱关源.MOS器件失配对开关电流滤波器的影响[J].西安交通大学学报,1995,29(2):16-23. |
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| 作者姓名： | 孟相如 邱关源 |
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| 摘 要： | 提出了一种ＭＯＳ器件失配时开关电流镜的简单模型，对开关电流（ＳＩ）非理想通用积分器进行了时域分析，以及积分器转移函数误差、Ｑ值及灵敏度的计算，并与开关电容（ＳＣ）原型做比较，文中还以ＳＩ非理想通用积分器模型为基块，导出了器件失配时双二次滤波电路的直流失调电流和转移函数表达式，为研究器件失配对ＳＩ滤波器的影响提供了一条有效的途径。
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| 关 键 词： | 开关电流 有源滤波器 电路分析 MOS器件 |
EFFECTS OF MOS DEVICE MISMATCH ON THE PERFORMANCE OF SWITCHED-CURRENT FILTERS |
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| Meng xiangru, Qiu Guanyuan.EFFECTS OF MOS DEVICE MISMATCH ON THE PERFORMANCE OF SWITCHED-CURRENT FILTERS[J].Journal of Xi'an Jiaotong University,1995,29(2):16-23. |
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| Authors: | Meng xiangru Qiu Guanyuan |
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| Affiliation: | School of Electrlcal Englneering |
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| Abstract: | A generalised switched-current(Sl)nonideal integrator is analyzed in the time domainby using a simple model of switched current mirror with MOS device mismatch proposed inthis paper,The error in the transfer function,Q value and the sensitivities of the integratorsare calculated and compared with switched-capacitor(SC)counterparts,The dc offset cur-rent and the transfer function of a biquadratic filter with device mismatch are also derivedwith the proposed model of the SI nonideal integrator as the basic building block.Themethod presented in the paper is systematic,and so it provides an effective approach for thestudy of effects of device mismatch on the performance of SI filters. |
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| Keywords: | switched-current active filter circuit analysis and design |
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