Abstract
A low-cost fully-differential operational amplifier (opamp) using a novel self-biased cascode output stage and cross-coupled input stage is proposed. Fabricated in only an 84/spl times/67 /spl mu/m/sup 2/ area with TSMC 0.35 /spl mu/m technology, and loaded with more than 100 pF capacitance, the opamp possesses 60 dB DC gain, 3 V//spl mu/s slew rate, 7.8 MHz unity-gain bandwidth, and -48 dB total harmonic distortion.
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