All orders made between June 8 and June 20 will be shipped after June 20. Sorry for the inconvenience.
All orders made between June 8 and June 20 will be shipped after June 20. Sorry for the inconvenience.
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PGA2310 Balanced Digital Volume Control Board with Ground Sensing
PGA2310 Balanced Digital Volume Control Board with Ground Sensing
PGA2310 Balanced Digital Volume Control Board with Ground Sensing
hifiocean

PGA2310 Balanced Digital Volume Control Board with Ground Sensing

Regular price $14.00 $0.00

High performance active volume control with balanced differential input and ground-sensing output (goodbye cross-channel ground loops!).

It can serve as:

  • Part of an integrated amplifier (great with LM3886 or similar chipamp based power stages);
  • With an input selector, a high performance balanced line stage or a minimalist analog preamp;
  • An output stage for a DAC to form a "digital preamp".

This board uses the PGA2310, a high quality digital volume control chip from TI, for adjusting volume. Also available digitally controlled variants based on WM8816/MAS6116 or MUSES72320, as well as analog variant with a dual linear potentiometer .

Features and benefits:

  • Balanced differential input with excellent common mode rejection - works very well with single ended sources, too!
  • Output stage that can be configured as balanced - best for downstream stages with differential input - or ground sensing (a.k.a. ground cancelling) - best if followed by a single-ended input referenced to its local ground, such as the vast majority of audio power amps;
  • Compact (2.9x2.6in or 74x66mm) two layer PCB, all easy to solder though hole parts.

The PGA2310 is controlled via its SPI interface and requires a microcontroller. You can use anything suitable, such as a 5-volt Arduino. To help you get started, we provide a simple Arduino sketch.

Documents:


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