The LT1079CN#PBF is a quad micropower precision Operational Amplifier for use with micropower sample-and-hold and micropower filters. This device is optimized for single supply operation at 5V. Micropower performance of competing devices is achieved at the expense of seriously degrading precision, noise, speed and output drive specifications. The design effort of the LT1079 was concentrated on reducing supply current without sacrificing other parameters. The offset voltage achieved is the lowest on any quad nonchopper stabilized operational amplifier-micropower or otherwise. Offset current, voltage and current noise, slew rate and gain bandwidth product are all two to ten times better than on previous micropower operational amplifier. The 1/f corner of the voltage noise spectrum is at 0.7Hz, at least three times lower than on any monolithic op amp.