SNOS674G November 1997 – April 2020 LMC6482
The LMC6482 incorporates specially designed wide-compliance range current mirrors and the body effect to extend input common-mode range to each supply rail. Complementary paralleled differential input stages, like the type used in other CMOS and bipolar rail-to-rail input amplifiers, were not used because of their inherent accuracy problems due to CMRR, crossover distortion, and open-loop gain variation.
The LMC6482s input stage design is complemented by an output stage capable of rail-to-rail output swing even when driving a large load. Rail-to-rail output swing is obtained by taking the output directly from the internal integrator instead of an output buffer stage.