ML12009, ML12011
LANSDALE Semiconductor, Inc.
Figure 2b Generic block diagram showing prescaler connection to
PLL Device
Prescaler
PLL
Fout Fin
ML12009/11
MC in
MC
ML145146
ML145158
ML145159
VCO
Loop Filter
Figure 2b shows a generic block diagram of connecting a prescaler to a PLL device that supports
dual modulus controls. Applicataion not AN535 describes using a two–modulus prescaler
technique. By using prescaler higher frequencies can be achieved than by a single CMOS PLL
device.
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