➤ 01光耦输出噪声

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1.实验方案

^{▲ 测量电路}

^{▲ 测量噪声的屏蔽盒子}

^{▲ 测量噪声的屏蔽盒子}

2.测量数据

(1) 测量数据1

^{▲ 噪声与电流之间的关系}

NoiseCurrentRatio0.0257880.0512960.4898600.0376770.0935800.4166810.0562570.1919800.3174130.1072640.3028700.3415060.1295160.4356000.3069330.1738090.6105200.2854420.2041200.7367800.2730500.2421300.9572100.258621

(2) 测量数据2

^{▲ 驱动电流与输出噪声之间的关系}

Noise(mV)0.0082100.0082270.0094870.0299640.0612480.0903320.1192220.1458290.1755340.2056620.2266220.2564920.2644700.271812Current(mA)0.0057610.0291020.0581740.1423500.2535900.3604700.4694000.5791700.7120200.8580500.9877701.1305001.3009001.454000Ratio1.4251000.2831760.1637330.2152650.2407110.2507350.2497780.2559140.2496000.2373860.2290620.2239000.2048480.187243 Noise(mV)Current(mA)Ratio0.0082100.0057611.4251000.0082270.0291020.2831760.0094870.0581740.1637330.0299640.1423500.2152650.0612480.2535900.2407110.0903320.3604700.2507350.1192220.4694000.2497780.1458290.5791700.2559140.1755340.7120200.2496000.2056620.8580500.2373860.2266220.9877700.2290620.2564921.1305000.2239000.2644701.3009000.2048480.2718121.4540000.187243

 

➤ 02利用TLE2072放大

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1.测量数据

Noise(V)CurrentRatio0.0004890.0015850.3167190.0004940.0140330.0344900.0020350.0610760.0306850.0078450.1156800.0721040.0213360.2096800.1031760.0379060.3123800.1219920.0581420.4116800.1411780.0871120.5393600.1675840.1261800.6788700.1801700.1689720.8424900.2034430.2170581.0345000.2164260.2663281.2048000.2184610.2995971.3705000.2188270.3486951.6477000.207904

^{▲ 噪声、噪声、比值}

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■ 相关文献链接:

Moise Measurement SIMPLE, EFFECTIVE METHOD AND CIRCUIT TO MEASURE VERY-LOW 1/F VOLTAGE Reference Noise(<1MV-p-p 0.1Hzto10Hz) How to measure the OPAMP noise?