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An integrated operational amplifier with novel HF behavior

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1 Author(s)

There is a growing demand for integrated operational amplifiers that combine high gain with a large unity-gain bandwidth and a simple frequency compensation. A frequency-compensation technique is described that enables construction of multi-stage amplifiers without introducing compensation problems. The suggested solution is based on the elimination of stages in the high-frequency region, such that in this region only one stage determines the roll-off. A circuit diagram of an integrated operational amplifier with a gain of 15/spl times/10/SUP 3/, a unity-gain bandwidth of 25 MHz, and frequency compensation in accordance with the above principle of elimination is presented.

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Solid-State Circuits, IEEE Journal of  (Volume:3 ,  Issue: 4 )