信阳师范学院学报(自然科学版)
信暘師範學院學報(自然科學版)
신양사범학원학보(자연과학판)
JOURNAL OF XINYANG NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2013年
4期
592-595
,共4页
噪声系数%RFI整流%电容性负载%去耦电容
譟聲繫數%RFI整流%電容性負載%去耦電容
조성계수%RFI정류%전용성부재%거우전용
noise factor%RFI rectification%capacitive loads%decoupling capacitors
结合现代传感器前置放大器构成特点,探讨了现代传感器前置放大器设计过程中的几个误区与对策。结果表明:噪声系数最小有时并不能得到最佳噪声性能;RFI整流误差是一个重要而容易被忽视的误差源;驱动电容性负载的情形常见且易振荡;芯片电源噪声(纹波)频率较高时单电容去耦无效。给出了这些问题的实用解决方法。
結閤現代傳感器前置放大器構成特點,探討瞭現代傳感器前置放大器設計過程中的幾箇誤區與對策。結果錶明:譟聲繫數最小有時併不能得到最佳譟聲性能;RFI整流誤差是一箇重要而容易被忽視的誤差源;驅動電容性負載的情形常見且易振盪;芯片電源譟聲(紋波)頻率較高時單電容去耦無效。給齣瞭這些問題的實用解決方法。
결합현대전감기전치방대기구성특점,탐토료현대전감기전치방대기설계과정중적궤개오구여대책。결과표명:조성계수최소유시병불능득도최가조성성능;RFI정류오차시일개중요이용역피홀시적오차원;구동전용성부재적정형상견차역진탕;심편전원조성(문파)빈솔교고시단전용거우무효。급출료저사문제적실용해결방법。
Considering the features of modern pre-amplifier circuit configurations , several misunderstandings and countermeasures in pre-amplifier design for sensor signal conditioning are studied .The results indicated that sometimes minimizing noise factor can't optimize the noise performance sometimes .RFI rectification errors are important error sources and to be often ignored , driving capacitive loads is common and oscillation problem often occurs , and using a single decoupling capacitor isn't an effective way to decoupling ICs at high power noise ( ripple) frequencies .The solu-tions to these problems are proposed .