Per spec, the max OSCin frequency of LMK04906 should below 500MHz. But is there a minimum input frequency? If the input frequency is 5KHz, will it work?
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Hi Yang,
In theory, 5 kHz on OSCin should be work since VCO (min) / (max VCO Divider * max N2 Prescalar * max N2 divider) is < 5 kHz. It is however important that the slew rate and amplitude requirement for OSCin on Page 11 of the datasheet are met.
Regads
Arvind Sridhar