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# Analog-to-digital converter

4-channel stereo multiplexed analog-to-digital converter WM8775SEDS made by Wolfson Microelectronics placed on a X-Fi Fatal1ty Pro sound card.

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.

## References

• Allen, Phillip E.; Holberg, Douglas R., CMOS Analog Circuit Design,


      , http://www.analog.com/library/analogDialogue/archives/39-06/data_conversion_handbook.html



• Knoll, Glenn F. (1989), Radiation Detection and Measurement (2nd ed.), New York: John Wiley & Sons, pp. 665–666
• Liu, Mingliang, Demystifying Switched-Capacitor Circuits,


• Nicholson, P. W. (1974), Nuclear Electronics, New York: John Wiley & Sons, pp. 315–316
• Norsworthy, Steven R.; Schreier, Richard; Temes, Gabor C. (1997), Delta-Sigma Data Converters, IEEE Press,


• Razavi, Behzad (1995), Principles of Data Conversion System Design, New York, NY: IEEE Press,


     , ISSN 0733-8716
, http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=761034