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Thread: Driving two channels with two op-amps

  1. #1
    Junior Member
    Join Date
    Jan 2019
    Posts
    3

    Driving two channels with two op-amps

    Hi,

    I need to use two channels of the ADC (either Audio Board or some other stereo ADC board) independently through two different op-amps. One op-amp is for the microphone, another one is for the guitar (so, I want to use one stereo input for both low and high impedance devices at the same time).

    Like this:

    Code:
                         _____            ________
                        /      Mic op-amp         \
        _____ Left ____/  ____            ______   \__  Left
    Mic                  /                      \
        \_____ GND _____/                        \_____ GND    Stereo ADC
           _/           \                        /
    Guitar               \____               ___/    __ Right             
           \_  Right ___       Guitar op-amp        /
                        \_____               ______/
    Do you think it's going to work?

  2. #2
    Senior Member+ Theremingenieur's Avatar
    Join Date
    Feb 2014
    Location
    Colmar, France
    Posts
    2,191
    There is no reason why this should not work if it is designed and realized according to all the rules of art.

  3. #3
    Junior Member
    Join Date
    Jan 2019
    Posts
    3
    Thanks! I suppose I'm only going to discover the rules of art and I suppose I'll be coming back once the eBay delivery has arrived. But generally, I try to use the pre-soldered solutions (not just the op-amps, but the boards with all the resistor and capacitors), hopefully it'll go relatively smoothly and my final goal is 4 channels with mic/guitar switch for each channel .

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