Subcircuit files of ICs by Nirmitha N

[NirmithaN24]

Task: Analog and Digital Circuit Design using eSim.
Designing ICs and building their subcircuits.
The below work contains the subcircuit files of ICs which were designed and simulated as the task assigned during the "eSim Semester Long Internship - 2025". Please verify the files of the ICs.

Purpose: To implement complex ICs using simple subcircuits in the eSim library.

Approach:

1. Initially, we design the basic internal circuit diagram of the IC. The ICs have certain ports through which the inputs are provided and outputs are obtained. These ports are assigned to the specified wires in the internal circuit diagram.
2. This circuit is now annotated, ERC checked and spice file is obtained.
3. Coming back to the main page of eSim software, we now convert it from KiCad to NGSpice which creates a netlist.
4. In the schematic sheet, choose the open library editor option. Then select the current library as subcircuitlibrary and press on add component. Now provide and name for the subcircuit.
5. Provide a shape and change the orientation of the field value and name as you desire. Then save the subcircuit and click ok to modify the subcircuit library.
6. The subcircuit is ready. Finally implement these subcircuits using a test circuit providing the necessary inputs and observe the obtained results.