Analog IC: what it means.
An analog IC works with quantities that vary continuously, such as a sensor voltage. Amplification, filtering and signal conversion are common analog functions. The circuit responds to the electrical signal itself rather than treating its information only as binary states. (Infineon: semiconductor glossary)
Analog and digital functions can coexist in one system. A sensor path may need analog processing before conversion to digital values; a processor does not remove that physical interface. A mixed-signal IC combines both types of circuitry. (Infineon: semiconductor glossary)
Put the definition to work.
Think of an amplifier that makes a small signal larger. “Analog” describes the signal-processing function, not the size or shape of the package.
Questions to ask next.
Use these questions as a reading checklist, not as a device-selection recommendation. Exact manufacturer documentation takes priority over a general definition.
- Signal range and bandwidth
- Supply and operating limits
- Required gain, filtering or conversion function
For the broader explanation, explore the complete integrated circuits guide. This page defines the term; the companion guide connects it to the rest of the system.
Common Analog IC questions.
Does analog mean the circuit cannot be inside an IC?
No. Analog is a description of the signal or circuit function. Analog functions can be integrated into semiconductor devices just as digital functions can. (Infineon: semiconductor glossary)