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An analog-to-digital converter (abbreviated ADC, A/D or A to D) is an electronic integrated circuit that converts a continuous quantity to a discrete time digital number. An ADC may also provide an isolated measurement. The reverse operation is performed by a digital-to-analog converter (DAC).
Typically, an ADC is an electronic device that converts an input analog voltage or current to a digital number. The size of the number grows with an increase in the input voltage or current. However, some non-electronic or only partially electronic devices, such as rotary encoders, can also be considered ADCs.
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- Counting Type ADC A simple tutorial showing how to build your first ADC.
- An Introduction to Delta Sigma Converters A very nice overview of Delta-Sigma converter theory.
- Digital Dynamic Analysis of A/D Conversion Systems through Evaluation Software based on FFT/DFT Analysis RF Expo East, 1987
- Which ADC Architecture Is Right for Your Application? article by Walt Kester
- AN71 - The Care and Feeding of High Performance ADCs Real world circuit and layout advice
- ADC and DAC Glossary Defines commonly used technical terms.
- Signal processing and system aspects of time-interleaved ADCs.
- Introduction to ADC in AVR - Analog to digital conversion with Atmel microcontrollers