When it comes to the difference among PCB, IC, OP AMP and chip,

1. Operational amplifier (OP AMP ) is a circuit unit with a pretty high amplification factor, a building block for analog circuits like comparators, summing and difference amplifiers, filters, integrators, differentiators, and which has special operational amplifier chips;

2. Chip is an abbreviation of the integrated circuit. In fact, the true meaning of the chip refers to a small semiconductor chip inside the integrated circuit package, that is the die. Mostly chip is also called as IC.

3. Printed Circuit Board (PCB) is a glass-epoxy substrate with copper trace conductors and pads on the surface, and which is the carrier of the above electronic components, like IC, OP AMP, etc.