1、电压增益AV≥40dB，输入电压有效值Vi≤20mV；AV可在0～40dB范围内步距为5dB 调节（也可以连续调节）。显示实验作者的学号；



2、最大输出电压正弦波有效值Vo≥2V，输出信号波形无明显失真；



3、3dB通频带0～5MHz；在0～4MHz通频带内增益起伏≤1dB；

4、放大器的输入电阻≥50，负载电阻（50±2）Ω；

-1, the voltage gain AV≥40dB, input voltage rms Vi≤20mV　AV can step in the range　0 ~ 40dB to 5dB adjustment (to be adjusted continuously). Experiments show the author' s student number　2, the maximum output voltage sine wave RMS Vo≥2V, the output signal waveform without significant distortion　3,3dB pass band of 0 ~ 5MHz　0 ~ 4MHz within the passband gain fluctuation ≤1dB　4, the amplifier input resistance ≥50, load resistor (502) Ω