Digital Volume Control


This digital volume control has no pot to wear out and introduces almost no noise in the circuit. Instead, the volume is controlled by pressing UP and DOWN buttons. This simple circuit would be a great touch to any home audio project.

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Parts

C3_________0.1uf Ceramic Disc Capacitor
U1_________DS1669 Digital Pot IC
S1,S2_______Momentary Push Button Switch
MISC_______Board, Wire, Socket For U1

Notes

1. S1 turns the volume up, S2 turns it down.

2. The input signal should not fall below -0.2 volts.


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