Recreate the book's operational amplifier or bandgap circuits in a simulation tool (like LTspice or Cadence Virtuoso) using modern foundry process design kits (PDKs) to see how the theoretical equations map to real-world silicon behaviors.
Yes, a legal PDF/eBook version exists through: analog design essentials by willy sansen pdf 2021
The text covers CMOS ADC and DAC principles and low-power sigma-delta converters. analog design essentials by willy sansen pdf 2021
Week 1 — Fundamentals