O Amp-Op 741

The 741 Op-amp

The most common and most famous op-amp is the mA741C or just 741, which is packaged in an 8-pin mini-DIP. The integrated circuit contains 20 transistors and 11 resistors. Introduced by Fairchild in 1968, the 741 and subsequent IC op-amps including FET-input op-amps have become the standard tool for achievingamplification and a host of other tasks. Though it has some practical limitations, the 741 is an electronic bargain at less than a dollar.