Generating multiple clocks for Bucket Brigade Devices

[ErnstHot]

I am planning on making a stereo bank of individually tuned comb filters for an audio effect, using a bunch of bucket brigade devices (MN3207). This means I will need to generate somewhere from 6 to 16 individual clock signals (and their inverse signals), running a couple of kHz to a couple of MHz for the BBDs, depending on how large I want the bank to be.

>=12 bit counters on a >=48 MHz clock would offer a reasonable resolution (+/- ~4 cents) for the frequency range I need, if my calculations are correct. (I plan on driving the BBDs beyond their specs using a 4049D hex inverter)

So how do you generate those clocks as cheap and simple as possible? It doesn’t need to be absolutely jitter free, or I would just do the whole thing in software. I want all the clocks to be digitally controlled from an MCU.

Any help would be much appreciated!

[NiHaoMike]

Maybe dedicate a small 8 bit microcontroller to the task of generating clock signals?

[trophosphere]

Might want to take a look at the Si5351B or Si5351C to see if it fits your specification.

[ErnstHot]

Thank you, both of you.

The Si5351 looks good, but I think I'll go with an MCU because I'll also need a DAC for controlling the feedback of the comb filters, so I might be able to kill two birds with one stone if I can find an MCU with a suitable timer and DAC.