IADCs
IADCs, or integrated analog-to-digital converters, are ADCs on a single integrated circuit that include essential analog front-end functions such as amplifiers, references, and often a multiplexer or sample-and-hold. This integration reduces external components, minimizes parasitics, and improves sensor-interface reliability.
Common IADC architectures include SAR, delta-sigma, pipeline, and flash. SAR and pipeline devices balance speed and
Performance is described by resolution, sampling rate, SNR, ENOB, and INL/DNL. Other metrics include gain and
Integration often provides a programmable gain amplifier, input multiplexer, and on-chip anti-alias filtering. Digital outputs typically
Applications include data acquisition, instrumentation, medical devices, automotive sensors, industrial controls, and consumer electronics. On-chip integration
Design considerations include noise, linearity, distortion, thermal drift, input bandwidth, and the speed–resolution–power trade-off. Packaging and
See also: Analog-to-Digital Converter, Mixed-signal integrated circuit, Data acquisition system.