Signal amplification performs two important functions:
• Increases the resolution of the inputted signal
• Increases it's signal-to-noise ratio
Operational amplifiers over the years have proven to be the best choice
for signal amplifications because of the following characteristics offered
by Operational amplifiers over other kinds of amplifiers
• High open-loop gain
• High Bandwidth
• High input impedance
• Low/Non offset voltage
• Fast/High slew rate
• Low output impedance
• Low noise
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