PL560-08 Datasheet, PDF (4/15 Pages) PhaseLink Corporation – Analog Frequency Multiplier

Analog Frequency Multiplier
VCXO Family of Products
CRYSTAL SPECIFICATIONS AND BOARD LAYOUT CONSIDERATIONS
BOARD LAYOUT CONSIDERATIONS
XTA
AFM IC
XIN (Pin # 4)
XOUT (Pin # 5)
XTAL
Ceramic
SMD
AFM IC
XIN (Pin # 4)
XOUT (Pin # 5)
To minimize parasitic effects, and improve performance:
• Place the crystal as close as possible to the IC.
• Make the board traces that are connected to the crystal pins symmetrical.
• The board trace symmetry is important, as it reduces the negative parasitic effects, for a clean frequency multiplication with low
jitter. Parasitic have negative effect on frequency pulling of a VCXO and jitter.
CRYSTAL SPECIFICATIONS & TUNING PERFORMANCE
PART
NUMBER
PL560-08/09
PL560-68/69
CRYSTAL SPECIFICATIONS
CRYSTAL
RESONATOR
FREQUENCY
(FXIN)
75~200MHz
MOD
E
CL (xtal)
CONDI-
TIONS
TYP.
At
Funda- Vcon
mental =
5pF
1.65V
TUNING PERFORMANCE
ESR
(RE)
Max.
30 Ω
CRYSTAL
FREQ
(MHz)
155.52
155.52
CRYSTAL
C0
C1
3.0pF 12.2fF
1.8pF 5.7fF
C0/C1
245
316
TUNING (Typical)
VC:
1.65V 0V
-145 ppm
VC:
1.65V 3.4V
+108 ppm
-134 ppm
+87 ppm
30.72 2.8pF 12.4fF 228
-167ppm
+176ppm
PL560-
37/38/39
PL560-
47/48/49
30.72 4.5pF 19.1fF 236
At
30~80MHz
Funda- Vcon
mental =
5pF
30 Ω
38.88
5.1pF 20.9fF
242
1.65V
38.88 5.3pF 25.6fF 207
-163ppm
-131ppm
-157ppm
+167ppm
+98ppm
+141ppm
77.76 2.0pF 6.7fF 305
-92ppm
+110ppm
Note: Non specified parameters can be chosen as standard values from crystal suppliers.
CL ratings larger than 5pF require a crystal frequency adjustment. Request detailed crystal specifications from PhaseLink.
47745 Fremont Blvd., Fremont, CA 94538 TEL [phone], FAX [phone] www.phaselink.com Rev.:03-22-05 Page 4