Low Noise Broadband Operational Amplifier Circuit

Published:2011/7/15 6:48:00 Author:Sue | Keyword: Low Noise, Broadband, Operational Amplifier | From:SeekIC

The circuit can increase the operational amplifier 101's gain bandwidth product to 100MHz. The circuit's input noise will be reduced to 0.5 μV(frequency band is 10KHz, signal source internal resistance value is 600Ω). The circuit moves 101's input grade out of inner circuit and uses the capacitor C2 to compose positive feedback compensating circuit which will increase the slew rate by 30 times.



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