Hello,
I am currently designing a VCA based on the That 2180.
I am gonna drive the control ports directly with an opamp as specified in the datasheet. The question is what would be the "best" opamp for the job.
It needs to be quite, have a low output impedance and needs to be fast enough.
The datasheet mentions the ne5532 but in some design notes they even used the ad797.
I am using 2 VCA's and drive both of the control ports so I would need 4 opamps. Would be nice to use dual opamps (1 dual per that 2180)
so the opamp shouldn't cost to much also.
Ad797 and lt1028 are good but single packages and they are bloody hell expensive.
So next up in line would be the lm4562. (the same as lme49720?)
It's low noise/high bandwith/ low output impedance... looks good I think.
Ne5532 is also still possible but I think the lm4562 will be better and have lower offset voltages.
Any suggestions are welcome
I am currently designing a VCA based on the That 2180.
I am gonna drive the control ports directly with an opamp as specified in the datasheet. The question is what would be the "best" opamp for the job.
It needs to be quite, have a low output impedance and needs to be fast enough.
The datasheet mentions the ne5532 but in some design notes they even used the ad797.
I am using 2 VCA's and drive both of the control ports so I would need 4 opamps. Would be nice to use dual opamps (1 dual per that 2180)
so the opamp shouldn't cost to much also.
Ad797 and lt1028 are good but single packages and they are bloody hell expensive.
So next up in line would be the lm4562. (the same as lme49720?)
It's low noise/high bandwith/ low output impedance... looks good I think.
Ne5532 is also still possible but I think the lm4562 will be better and have lower offset voltages.
Any suggestions are welcome