That's impossible at the longest quoted delay. That implies at a minimum a 20KHz clock rate, and 30KHz is more like it.
It might be analogue, but it's still a sampling system and you can't escape the Nyquist limit.
Yes, for the anti-aliasing filters, but the BBD input bandwidth itself should ideally be much higher than the nyquist frequency of the lowest sample rate. The MN3005 datasheet states 10 kHz when clocked at 40 kHz, the MN3007 states 12 with the same rate. I'd still have a 3 kHz cutoff but I'd like to improve on the 1 kHz bandwidth I'm getting from the V3205s, which should be 6 kHz. That 1 kHz is measured at the BBD output, not the filter output.
That's friggin awesome! Can you tell me about the illuminated switches you used?
You could modify the BBD PCB with just a few tweaks to accept v3205 or MN3005. You only need to use jumpers to change two or three different voltages and a small modification in values on the compander and it should work perfectly. It might save some hassle in having two different PCBs FWIW.
They're E-Switch LP4EE1PXC (X is the colour, R, B, G etc) and they cost more than I'd usually like to spend, but they do look nice. Mouser only had red and blue in stock, but I'm happy I went with those now!
I thought about doing a board that could use both, but I wanted to run the MN3005s at 15 V, and fitting the SMPS would have been a bit more work, so I left it as is for the 3205s. I think I'll have to change a few things anyway so I might do that for the next board.