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The paper presents a rail-to-rail class-AB operational amplifier in a standard v/sub th/=0.6 V CMOS technology operating at 1.5 V. A hybrid nested Miller compensation technique yields 6 MHz unity gain frequency at 300 /spl mu/A supply current, 120 dB gain and programmability. Operation down to 1.0 V at 15 /spl mu/A is possible with 300 kHz UGF. The die area of the chip is 0.05 mm/sup 2/ (70 mil/sup 2/).>
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Eschauzier et al. (1994) studied this question.
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