The ISL28286 and ISL28486 are Dual and Quad channel micropower precision operational amplifiers optimized for single supply operation at 5V down to 2.4V. For equivalent performance in a single channel op-amp reference EL8186. The ISL28286 and ISL28486 feature an Input Range Enhancement Circuit (IREC) which enables both parts to maintain CMRR performance for input voltages equal to the positive and negative supply rails. The input signal is capable of swinging 10% above the positive supply rail and to ground with only a slight degradation of the CMRR performance. The output operation is rail to rail. Both parts draw minimal supply current while meeting excellent DC-accuracy, AC-performance, noise and output drive specifications.