D**2.118 A designer, wanting to achieve a stable gain of 100 V/V with a 3-dB frequency above 5 MHz, considers her choice of amplifier topologies. What unity-gain frequency would a single operational amplifier require to satisfy her need? Unfortunately, the best available amplifier has an ft of 50 MHz. How many such amplifiers connected in a cascade of identical noninverting stages would she need to achieve her goal? What is the 3-dB frequency of each stage? What is the overall 3-dB frequency?
D**2.118 A designer, wanting to achieve a stable gain of 100 V/V with a 3-dB frequency above 5 MHz, considers her choice of amplifier topologies. What unity-gain frequency would a single operational amplifier require to satisfy her need? Unfortunately, the best available amplifier has an ft of 50 MHz. How many such amplifiers connected in a cascade of identical noninverting stages would she need to achieve her goal? What is the 3-dB frequency of each stage? What is the overall 3-dB frequency?
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