J. Burnett
Newbie level 6
FvM and bcarso,
Just to prove to myself that I'm not a complete idiot I submit the following (it's hard to believe I used to do this for a living).
https://obrazki.elektroda.pl/95_1305658172.jpg
The first figure is for my interpretation of the spec (i.e., +20 db at 20 Hz and -20db at 20 kHz. I no longer have access to SPICE or any other analysis software but I'm pretty sure this is right (maybe one of you guys could run it for me?).
The second circuit is for the flat passband with corners at 20 Hz and 20 kHz. My only concern here is along the lines bcarso noted about the 324 itself. The open loop gain is only (barely) 20 db at 20 kHz which makes this a questionable design. There's not much stuff around 20 kHz so it probably wouldn't matter for a low budget audio application? Maybe you could cut it back to 5 kHz for AM broadcast quality?
Best of luck to you guys
J. Burnett
Just to prove to myself that I'm not a complete idiot I submit the following (it's hard to believe I used to do this for a living).
https://obrazki.elektroda.pl/95_1305658172.jpg
The first figure is for my interpretation of the spec (i.e., +20 db at 20 Hz and -20db at 20 kHz. I no longer have access to SPICE or any other analysis software but I'm pretty sure this is right (maybe one of you guys could run it for me?).
The second circuit is for the flat passband with corners at 20 Hz and 20 kHz. My only concern here is along the lines bcarso noted about the 324 itself. The open loop gain is only (barely) 20 db at 20 kHz which makes this a questionable design. There's not much stuff around 20 kHz so it probably wouldn't matter for a low budget audio application? Maybe you could cut it back to 5 kHz for AM broadcast quality?
Best of luck to you guys
J. Burnett