Background Theory > Spice Simulation

Sub-circuits (also known as sub-circuits or sub-circuits) are a powerful feature that allows you to create custom circuit components with their own internal network of devices. Sub-circuits enable you to encapsulate complex circuits, reuse them in multiple designs, and organize your simulations more efficiently. They are particularly useful for modeling integrated circuits, complex devices, and custom components that are not available as built-in SPICE primitives.

Sub-circuits allow you to create reusable building blocks for your circuits, improving simulation efficiency and organization. They are especially useful for complex devices like operational amplifiers, analog components, custom transistors, and more. Make sure to understand the syntax and conventions of your specific SPICE simulator for defining and using sub-circuits effectively.