CataM
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Hello everyone,
The VCO XR2206 shows at page 11 that the kVCO is negative. That introduces 180º phase in the transfer function of a PLL making it unstable. How can PLLs built around XR2206 work ?
What am I missing ? Obivously if kVCO was positive, we had no problem, but how is that justified ?
Any comment is appreciated.
The VCO XR2206 shows at page 11 that the kVCO is negative. That introduces 180º phase in the transfer function of a PLL making it unstable. How can PLLs built around XR2206 work ?
What am I missing ? Obivously if kVCO was positive, we had no problem, but how is that justified ?
Any comment is appreciated.