This post explains for the dual op Amp.
The Part Number is JRC4560.
The function of this semiconductor is Dual Operational Amplifier.
The package is DIP8, DMP8, SIP8, SOP8 JEDEC 150mil 8 Pin Type
Manufacturer: New Japan Radio
Preview images :
The NJM4560 integrated circuit is a high-gain, wide bandwidth, dual operational amplifier capable of driving 20V peak-to-peak into 400Ω loads.
The NJM4560D combines many of the features of the NJM4558 as well as providing the capability of wider bandwidth, and higher slew rate make the NJM4560E ideal for active filters, data and telecommunications, and many instrumentation applications.
The availability of the NJM4560 in the surface mounted micro-package allows the NJM4560 to be used in critical applications requiring very high packing densities. […]
1. Operating Voltage ( ±4V~±18V )
2. Wide Gain Bandwidth Product ( 10MHz typ. )
3. Slew Rate ( 4V/μs typ. )
4. Package Outline
5. Bipolar Technology