Textbook in PDF format Current and future electronic designs rely on circuit design and modeling software. This book guides engineering students and industry practitioners through simulation‑based analog circuit design, from fundamental op‑amp and diode applications to multi‑transistor‑multi-stage amplifier circuits. A basic design that integrates simulations may start with manual calculations that utilize simplified formulas and assumed parameters. It is followed by a simulation that allows the designer to contrast the approximations with an exact solution. It then ends with circuit tweaking and precise parameter tuning. In more advanced designs, simulations play a more central role in the design process itself