Hi folks, I have an A-196 PLL, and I have a simple question. The
internal VCO seems to behave much better given the LPF input than an
external VCO. The LPF signal is typically way too jittery for an
external VCO. The only way I've been able to get an external VCO to
work is to patch the COMP output to a slew then to the external VCO.
Is there something wihtin the circuit between in the LPF output and
the VCO input Or is the internal VCO special or slewy compared to
typical VCOs

Thanks,
Doug