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yungman said:Gain bandwidth is just the gain times the -3db frequency if it is a DC circuit from 0Hz to -3dB frequency.
In your case, your circuit has a gain of 1. Your -3db from the top graph is about 370Khz, so the GBWP is about 370KHz.
uart said:You must be looking at a different attachment than me yungman. The -3dB point is shade over 2MHz and the gain of each op-amp is 2.
The numbers may have been changed slightly but this is basically the exact same question as the other poster gave. I'd say this is a class assignment and the instructor has changed the figures slightly for each group so as to minimize cheating.
The Gain Bandwidth Product (GBW) is a measure of the amplifier's frequency response, describing the relationship between the amplifier's gain and the frequency at which it is measured. It is the product of the amplifier's gain (measured in decibels) and the frequency at which it is measured (in hertz).
The Gain Bandwidth Product can be calculated by finding the frequency at which the gain of the amplifier is equal to 0 decibels (unity gain) on the Bode plot. This frequency is then multiplied by the gain at this frequency to obtain the GBW product value.
A high GBW product indicates that the amplifier has a wide frequency response range, meaning it can amplify signals at higher frequencies without significant loss of gain. This is important for applications that require amplification of high-frequency signals, such as in radio and telecommunications.
The Gain Bandwidth Product is directly related to the bandwidth of the amplifier, meaning that a higher GBW product will result in a wider bandwidth. This means that the amplifier can amplify a wider range of frequencies without significant distortion, resulting in better overall performance.
The Gain Bandwidth Product of an amplifier can be affected by various factors such as the type of amplifier (e.g. operational amplifiers have a higher GBW product than other types of amplifiers), the internal components and design of the amplifier, and external factors such as temperature and power supply variations.