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集成运算放大器的噪声参数选用En-In来规定较好,采用正弦波发生器法可以实现器件En、In、N_F的快速测定。DYF-1型运算放大器低频噪声分析仪采用了锁相一同步检波方案。在低频噪声测量时,必须注意仪器的准确定标。
The noise parameters of the integrated operational amplifier are better defined by En-In. The sine wave generator method can realize the rapid determination of the devices En, In and N_F. DYF-1 op amp low-frequency noise analyzer uses a phase-locked synchronous detection program. In the low-frequency noise measurement, must pay attention to the accurate calibration of the instrument.