• on Audio/Video/Photography
  • Published in issue 7/2010 on page 22
About the article

Remote-controlled Preamp with Digital Pot

(Summer Circuits 2010 article)

This circuit is a simple but high-quality preamplifier using a DS1882 digital potentiometer, a device specially designed for audio applications. The potentiometer is controlled over an I2C interface by an R8C/13 microcontroller. The main features of the design are its remote control and lack of moving parts.
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