The NJM4580D is a dual opamp popularly used in many distortion pedals.

This chip is a dual operational amplifier, specially designed for improving the tone control, which is most suitable for the audio application. Featuring noiseless, higher gain bandwidth, high output current and low distortion ratio, it is most suitable not only for acoustic electronic parts of audio pre-amp and active filter, but also for the industrial measurement tools. It is also suitable for the headphone amp at higher output current, and furthermore, it can be applied for the handy type set operational amplifier of general purpose in application of low voltage single supply type which is properly biased of the low voltage source.

Features:

• Operating Voltage ±2V~±18V
• Low Input Noise Voltage 0.8µVrms typ. (RIAA)
• Wide GBW 15MHz typ.
• Low Distortion 0.0005% typ.
• Slew Rate 5V/µs typ.
• Bipolar Technology
• DIP 8 Package