SY89423V Datasheet, PDF (2/8 Pages) Micrel Semiconductor – 5V/3.3V DUAL HIGH-PERFORMANCE PHASE LOCKED LOOP

Micrel
BLOCK DIAGRAM
RINA
RINA
FINA
FINA
÷2
S3A
F1A F2A
LOOP
1
D
FILTER
M
U
X
PHASE-FREQUENCY
DETECTOR
0
VCO
D
S1A
S2A
÷ NA
(2, 4, 8, 16)
RINB
RINB
FINB
FINB
S1B
S2B
÷ NB
(1, 2, 4, 8, 10, 12, 16, 20)
S3B
D
S4B
PHASE-FREQUENCY
DETECTOR
VCO
0
M
U
X
÷P
(1, 2)
LOOP
1
FILTER
S5B
F1B F2B
÷2
ClockWorks™
SY89423V
HFINA
HFINA
HFOUTA
HFOUTA
FOUTA
FOUTA
FOUTB
FOUTB
HFOUTB
HFOUTB
HFINB
HFINB
LOOP FILTER COMPONENT SELECTION
R
C
C
= 1.0µF ±10% (X7R dielectric)
R
= 560Ω ±10%
F1X
F2X
2