A phase lock loop includes precision charge pump current generation circuit which provides a dynamically variable charge pump current to a charge pump. The charge pump current is developed from the VCO control voltage and varies in inverse proportionality to changes in the control voltage. The proportionality...http://www.google.fr/patents/US5933037?utm_source=gb-gplus-shareBrevet US5933037 - High speed phase lock loop having constant bandwidth
High speed phase lock loop having constant bandwidth
