Analog Electronics#
Human-engineered behavior built on continuous signals.
Analog electronics is about shaping voltages and currents in a continuous domain β working with the grain of physics rather than forcing it into discrete states. This is where amplifiers, filters, regulators, and signal conditioning circuits come together to produce useful behavior.
Every analog design is a balance of competing tradeoffs: gain versus bandwidth, noise versus impedance, stability versus responsiveness, simplicity versus performance. There are no perfect solutions β only acceptable compromises.
This section focuses on circuit techniques: how to use semiconductor devices to build amplifiers, set bias points, shape frequency response, and regulate power. The devices themselves β diodes, BJTs, MOSFETs, thyristors β live in Semiconductors under Fundamentals. The Fundamentals section defines the underlying requirements; Analog Electronics explores how real circuits are built on top of them.
Sections#
Integrated Analog Devices β Op-amps, comparators, regulators, and references: what happens when analog circuits move into silicon.
Amplifiers & Gain Stages β Single-transistor stages, op-amps, and multistage designs: turning small signals into usable ones.
Biasing & Operating Points β DC biasing, operating regions, and temperature drift: making circuits behave predictably.
Filters & Frequency Behavior β RC/RL filters, active filters, and frequency response: shaping signals in time and frequency.
Power & Regulation β Linear regulators, switching regulators, references, and decoupling: supplying clean, stable energy.
Noise, Stability & Reality β Noise sources, oscillation, and layout parasitics: where designs succeed or fail.