Need programmable cutoff LP filter

Hi all,

Does anyone have a recommendation for a digitally programmed low-pass filter like Maxim's 270/271 except with a lower range for the cutoff frequency?

I need an adjustable cutoff from about 200 - 2000 Hz (the 270's range is

1 - 25 kHz). I would prefer not to use a programmable filter that uses resistors or pots because I need high precision. I'll have at least 5 of these, and the cutoff frequencies have to match to +- 2 Hz or so (audio application).

My other option I guess is to get filters for which you adjust the cutoff with an external clock, have one clock serve all, and adjust the clock frequency.

But I'd sure like to know about any easily programmable low-pass filter chips.

Thanks in advance, Amanda