AK1547 Datasheet, PDF (3/37 Pages) Asahi Kasei Microsystems – 4GHz Low Noise Integer-N Frequency Synthesizer

3. Block Diagram
[AK1547]
REFIN
CLK
DATA
LE
RFINP
RFINN
VBG
R COUNTER
14 bit
REGISTER
24 bit
PHASE
FREQENCY
DETECTOR
LOCK DETECT
SWALLOW
COUNTER
6 bit
PROGRAMABLE
COUNTER
13 bit
N DIVIDER
+
PRESCALER
-
8/9,16/17,32/33,64/65
CHARGE
PUMP
FAST
COUNTER
BIAS
CP
LD
Fig. 1 Block Diagram
MS1464-E-00
3
2012/9