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AK1572 Datasheet, PDF (12/35 Pages) Asahi Kasei Microsystems – Down Converter Mixer with Fractional-N Frequency Synthesizer and VCO
10. Loop filter /Charge Pump
[AK1572]
Phase Detector
up
down
Timer
VCO
Loop Filter
CP
R3
C1
R2
C3
C2
Fig.4 Loop Filter Schematic
MS1551-E-00
12
2013//8