- on Audio/Video/Photography
- Published in issue 7/2010 on page 22
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.