| 可用于片上集成的绝对值电路 |
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| 引用本文： | 张齐, 王超,.可用于片上集成的绝对值电路[J].电子器件,2008,31(4). |
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| 作者姓名： | 张齐 王超 |
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| 作者单位： | 上海大学微电子研究与开发中心,上海,200072 |
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| 基金项目： | AC-AC升降压SPAWM电子功率变换器(A.10-0109-06-027) |
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| 摘 要： | 系统中绝对值电路含悬浮二极管,阻碍了片上集成.为此,另辟蹊径用运放构成无二极管绝对值电路.PSpice仿真表明,运放OPA365构成的无二极管绝对值电路与理想电路输出电压的幅值误差较小,最大仅为0.7%;在零电平附近的幅值误差<12 mV,相位误差可略.因此,内部结构合理的轨到轨运放构成无二极管绝对值电路,其幅值误差可望<0.7%.其片上集成后,可用于笔者"AC-AC变换" 项目及电气测量.
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| 关 键 词： | 微电子学 片上集成 无二极管绝对值电路 PSpice仿真 轨到轨运放 |
Absolute Value Circuit Integrated on Chips |
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| ZHANG Qi,WANG Chao.Absolute Value Circuit Integrated on Chips[J].Journal of Electron Devices,2008,31(4). |
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| Authors: | ZHANG Qi WANG Chao |
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| Affiliation: | ZHANG Qi,WANG Chao(Shanghai University Electronics R&D Center,Shanghai 200072,China) |
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| Abstract: | In our system,the absolute value circuit with diode whose pins are floated,it makes the circuit can't be integrated on chips.To solve this problem,an alternative way is to adopt operation amplifiers to form absolute value circuit which have no diodes.Pspice simulation shows,the amplitude error of the circuit containing the operation amplifiers,OPA365,is very small,only 0.7% compared with the ideal case;its amplitude error around the zero voltage level is less than 12 mV and the phase error can be ignored.Ac... |
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| Keywords: | micro-electronics be integrated on chips PSpice simulation rail-to-rail operation amplifier |
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