9FG430 Datasheet, PDF (9/18 Pages) Integrated Device Technology – Four Output Differential Frequency Generator for PCIe Gen3 and QPI

9FG430
Four Output Differential Frequency Generator for PCIe Gen3 and QPI
Differential Clock Tolerances x1 = 25MHz
Clock Periods - Differential Outputs with Spread Spectrum Disabled
SSC OFF
or SSC +/- Synthesis
0.25%
Error
Center (ppm)
Spread
Center
Freq.
MHz
Measurement Window
1 Clock
1us
0.1s
0.1s
0.1s
1us
-SSC
- ppm
+ ppm
+SSC
-c2c jitter
AbsPer
Min
Short-Term
Average
Min
Long-Term
Average
Min
0 ppm
Period
Nominal
Long-Term
Average
Max
Short-
Term
Average
Max
1 Clock
+c2c
jitter
AbsPer
Max
Units
0
100.00 9.95000
10.00000 10.00000 10.00000
10.05000 ns
0
125.00 7.95000
8.00000 8.00000 8.00000
8.05000 ns
0
133.33 7.45000
7.50000 7.50000 7.50000
7.55000 ns
DIF
10
166.67 5.94994
0
200.00 4.95000
5.99994 6.00000 6.00006
5.00000 5.00000 5.00000
6.05006 ns
5.05000 ns
6
266.67 3.69998
3.74998 3.75000 3.75002
3.80002 ns
10
333.33 2.94997
2.99997 3.00000 3.00003
3.05003 ns
0
400.00 2.45000
2.50000 2.50000 2.50000
2.55000 ns
Notes
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
Clock Periods - Differential Outputs with Spread Spectrum Enabled
Measurement Window
SSC ON
-0.5%
Down
Spread
Synthesis
Error
(ppm)
Center
Freq.
MHz
1 Clock
1us
0.1s
0.1s
0.1s
1us
-SSC
- ppm
+ ppm
+SSC
-c2c jitter
AbsPer
Min
Short-Term
Average
Min
Long-Term
Average
Min
0 ppm
Period
Nominal
Long-Term
Average
Max
Short-
Term
Average
Max
1 Clock
+c2c
jitter
AbsPer
Max
Units
96
99.75 9.94906 9.99906 10.02406 10.02506 10.02603 10.05103 10.10103 ns
19
124.69 7.94925 7.99925 8.01925 8.02005 8.02020 8.04020 8.09020 ns
96
133.00 7.44930 7.49930 7.51805 7.51880 7.51952 7.53827 7.58827 ns
DIF
10
166.25 5.94943 5.99943 6.01443 6.01504 6.01510 6.03010 6.08010 ns
96
199.50 4.94953 4.99953 5.01203 5.01253 5.01301 5.02551 5.07551 ns
-98
266.00 3.69965 3.74965 3.75902 3.75940 3.75903 3.76841 3.81841 ns
10
332.50 2.94972 2.99972 3.00722 3.00752 3.00755 3.01505 3.06505 ns
96
399.00 2.44977 2.49977 2.50602 2.50627 2.50651 2.51276 2.56276 ns
Notes
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1,2
1_{Guaranteed by design and characterization, not 100% tested in production.}
2 _{All ppm specifications are guaranteed with the assumption that the REF output is tuned to the exact target XTAL frequency.}
IDT^® Four Output Differential Frequency Generator for PCIe Gen3 and QPI
9
1681C—08/26/10