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A high-dynamic-range CMOS op amp with low-distortion output structure

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2 Author(s)

In order to reach a high dynamic range, a rail-to-rail input structure was designed. With the output stage, the op amp has a completely symmetrical configuration. As a result, total harmonic distortion, especially the second harmonic distortion, of the op amp is minimized. Further, the structure allows the compensation of the right half-plane zero that normally appears in the commonly used two-stage Miller amplifier.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:22 ,  Issue: 6 )