I am searching for a simple low-frequency clock generator IC and I am overwhelmed by all of the choices. All I need to do is generate a programmable low-jitter clock in the range of 1-6MHz with 1Hz resolution. LVCMOS output and doesn't need to be low power. I can provide an external reference clock
I have looked at PLL IC's but they seem to be in the GHz range and have 40+ pins. DDS IC's seem to have a lot of features I don't need (like sine/triangle wave output and modulation) and I can't find specs for jitter.
One part that looks interesting is the AD9833; 10 lead MSOP, SPI controlled, external clock reference. But there are no specifications for jitter on the datasheet. I don't know the exact jitter requirement that I have for this project (yet) but I think it will be about 1ps rms.
Can anyone give me some advice? Should I use a PLL or DDS? Or something else?