Hi friends,
Long time reader yet first time poster here on the forums.
I'm quite a newbie with analog electronics and could use some help trying to understand a seemingly basic concept.
I'm working on a small project that allows me to test (hear and see via a level meter) the audio input from a variety of sources (line level audio, mic level and high impedance "instrument/guitar" level).
I believe I have a grasp on the proper circuits to handle the line level and instrument level inputs, yet I'm struggling with the low level 10mV microphone level input.
I'd hoped to use the same dual op-amp (MCP 6002) to handle this amplification, and using a switch to change R2 of the non-inverting feedback loop, thus changing the AV gain to the appropriate level.
Yet, I'm sure I'm looking at this all wrong.
My first question addresses IF this is the right path?
Additionally, is it better to design a separate op-amp circuit to hand each "type" of audio input, using a switch to engage the signal path to the appropriate amplifier circuit?
Thank you all fr any guidance and apologies for the newbie approach.
-Nicholas
Long time reader yet first time poster here on the forums.
I'm quite a newbie with analog electronics and could use some help trying to understand a seemingly basic concept.
I'm working on a small project that allows me to test (hear and see via a level meter) the audio input from a variety of sources (line level audio, mic level and high impedance "instrument/guitar" level).
I believe I have a grasp on the proper circuits to handle the line level and instrument level inputs, yet I'm struggling with the low level 10mV microphone level input.
I'd hoped to use the same dual op-amp (MCP 6002) to handle this amplification, and using a switch to change R2 of the non-inverting feedback loop, thus changing the AV gain to the appropriate level.
Yet, I'm sure I'm looking at this all wrong.
My first question addresses IF this is the right path?
Additionally, is it better to design a separate op-amp circuit to hand each "type" of audio input, using a switch to engage the signal path to the appropriate amplifier circuit?
Thank you all fr any guidance and apologies for the newbie approach.
-Nicholas