Data Sheet

VFCG100
Quad Output
Clock Generator
Features





RoHS Status
300MHz to 1.5GHz frequency range
4 selectable output frequencies
Stability: < 1 ppm
Low power: <220mW typical
Low profile SMD package
Applications



Optical Networking, SONET / SDH / ATM
10 Gigabit Ethernet
Forward Error Correction (FEC)
Description
The VFCG100 is a Clock Generator which provides an output frequency up to 1.5GHz. Up to four preset output
frequencies can be selected by asserting the frequency select inputs [S1:S0]. The VFCG100 is offered in a
19.5mm x17mm surface mount package. Consult factory for frequency selections.
Filter
Ref Clock
VCO
PFD
FOUT (12)
/FOUT (11)
/EN (10)
N- Divider
(13)
P1
P2 (14)
0.1uF
S1 S0
(3) (5)
Block Diagram
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0912
Specifications are subject to change without notice
1
VFCG100
Quad Output
Clock Generator
Electrical Specifications
Parameter
Output
Frequencies
Output
Frequency
Range
Symbol
Condition
Min
FOUT
(F0) – F0(3)
300
Typ
F
Frequency
Stability
∆F/F
Operating
Temperature
T
Max
Unit
Note
1500
MHz
See table 2
100
MHz
FOUT min to
FOUT max
ppm
@ 25ºC
1
Vs. Operating temperature
-40
+85
C
Differential LVPECL
Output
Supply Voltage
VCC
3.135
Unterminated
3.3
Supply Current
RMS Jitter
50kHz to 80MHz
Accuracy
V
80
mA
0.2
ps
±5
ppm
300
Start Up Time
I/O Select
Inputs
Tristate
Enable/Disable
Input
3.465
S1: S0
@ 25ºC
ms
LVMOS
Logic “0” or Floating: Output Enabled
Logic “1”: Output Disabled
Absolute Maximum Ratings
Parameter
Min
Max
Units
Power Supply Voltage
-0.5
+4.0
Volts
Storage Temperature
-45
+90
ºC
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0912
Specifications are subject to change without notice
2
VFCG100
Quad Output
Clock Generator
Pin Assignments
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
DNC
GND
S1
DNC
S0
DNC
DNC
VCC
GND
/OE
/FOUT
FOUT
P1
P2
Description
Do not connect to this pad
Ground
Output select (msb)
Do not connect to this pad
Output select (lsb)
Do not connect to this pad
Do not connect to this pad
3.3 volt power supply
Ground
Output disable
Complimentary output
Output
Connect to P2 externally
Connect to P1 externally
Notes
Add 0.1 uF capacitor
Ordering Information:
Once input and output frequencies have been submitted and approved, the Factory will assign a part number.
VFCG100 -
SUFFIX
Sample Frequencies
P/N
suffix
-001
-003
-005
S1:S0
00
01
10
11
Output
Frequency
(MHz)
622.080
644.5314
669.32658
693.48315
00
01
10
11
666.5192
669.32658
693.48315
704.38
00
01
10
11
622.080
625.000
666.5192
690.5692
Table 2
P/N
suffix
-002
-004
-006
S1:S0
Mechanical Outline
Output
Frequency (MHz)
00
01
10
11
1065.00
1066.00
1067.00
1068.00
00
01
10
11
900.00
910.00
920.00
930.00
00
01
10
11
800.00
820.00
840.00
860.00
75 South Street, Hopkinton, MA 01748 • 800-982-5737 • 508-435-6831 • FAX 508-497-6377 • www.ctsvalpey.com • RevB0912
Specifications are subject to change without notice
3
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