Скачать или смотреть Op Amp Amplifier with -25 to 55 dB Attenuation-Gain range

How to design an electronic amplifier with wide range of attenuation and gain using one operational amplifier and one potentiometer? what range of attenuation and gain we can realize for the single op amp electronic amplifier? What Gain-Bandwidth product (GBW) should we consider for the needed OpAmp for analog audio signal processing vs for video/multimedia applications? What Op Amp choices are available from integrated circuit designers like Texas Instruments or Analog Devices? These questions are discussed in this variable attenuation-gain amplifier with wide gain dynamic range. The presented circuit analysis for the analog circuit example in this video shows as much as -25 dB (attenuation) and as high as 55dB gain can be realized by this design. A combination of op amp virtual short and gain of non-inverting amplifier are used to find the minimum and maximum gain of the presented analog amplifier.