A quad low voltage rail-to-rail operational amplifier

A low-voltage rail-to-rail amplifier that has a NPN PNP switchable differential input stage allowing rail-to-rail input voltage swings is presented. The inputs can be overdriven without causing phase reversal in the output signal. The amplifier provides rail-to-rail output voltage swings which extend to within 50 mV of either rail. The output stage is current boosted to provide up to 50 mA of drive current.<
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