Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

  • State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 30 subscribers
  • Views 532 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Active Volume Control for Professional Audio

Wim Nolles
Prodigy 30 points
Other Parts Discussed in Thread: OPA1602, OPA1604

LS,

With great interest I read the article about Active Volume Control for Professional Audio.

I like to build this audio control, but would like to make a prototype first using through hole components. What components would be recommended?

Particularly I would like to know what capacitors to use, and what the DIP version of the opamp is I should use.

Thanks in advance.

Groet,

Wim

Active Volume Control for Professional Audio

  • 0
    TI__Mastermind 27715 points

    Hello Wim,

    Thank you for your interest in my TI Precision Design for active volume control.

    Unfortunately the OPA1604 is not offerred in a DIP package, but you could use two OPA1602 devices (same op amp in a dual package) in the 8-pin SOIC package and install them on the DIP-ADAPTER-EVM.

    The most critical capacitor in the signal path is C5 in the input filter. This cap must be of dielectric type C0G/NP0. Here's a suitable through-hole replacement: 

    The other capacitors should be of dielectric type X7R. You can select through-hole replacements using this query: Capacitors, Ceramic, Through-hole, X7R

    Best regards,

    Ian Williams
    Linear Applications Engineer
    Precision Analog - Op Amps