參數(shù)資料
型號： MT9043AN48PINSSOP
廠商： Zarlink Semiconductor Inc.
英文描述： T1/E1 System Synchronizer
中文描述： T1/E1的系統(tǒng)同步
文件頁數(shù)： 27/29頁
文件大小： 453K
代理商： MT9043AN48PINSSOP
MT9043
Data Sheet
27
Zarlink Semiconductor Inc.
See “Notes” following AC Electrical Characteristics tables.
Notes:
Voltages are with respect to ground (V
) unless otherwise stated.
Supply voltage and operating temperature are as per Recommended Operating Conditions.
Timing parameters are as per AC Electrical Characteristics - Timing Parameter Measurement Voltage Levels
1. PRI reference input selected.
2. SEC reference input selected.
3. Normal Mode selected.
4. Freerun Mode selected.
5. 8kHz Frequency Mode selected.
6. 1.544MHz Frequency Mode selected.
7. 2.048MHz Frequency Mode selected.
8. 19.44MHz Frequency Mode selected.
9. Master clock input OSCi at 20MHz
0ppm.
10. Master clock input OSCi at 20MHz
±
32ppm.
11. Master clock input OSCi at 20MHz
±
100ppm.
12. Selected reference input at
0ppm.
13. Selected reference input at
±
32ppm.
14. Selected reference input at
±
100ppm.
15. For Freerun Mode of
0ppm.
16. For Freerun Mode of
±
32ppm.
17. For Freerun Mode of
±
100ppm.
18. For capture range of
±
230ppm.
19. For capture range of
±
198ppm.
20. For capture range of
±
130ppm.
21. 25pF capacitive load.
22. OSCi Master Clock jitter is less than 2nspp, or 0.04UIpp where1UIpp=1/20MHz.
23. Jitter on reference input is less than 7nspp.
24. Applied jitter is sinusoidal.
25. Minimum applied input jitter magnitude to regain synchronization.
26. Loss of synchronization is obtained at slightly higher input jitter amplitudes.
27. Within 10ms of the state, reference or input change.
28. 1UIpp = 125us for 8kHz signals.
29. 1UIpp = 648ns for 1.544MHz signals.
30. 1UIpp = 488ns for 2.048MHz signals.
31. 1UIpp = 323ns for 3.088MHz signals.
32. 1UIpp = 244ns for 4.096MHz signals.
33. 1UIpp = 122ns for 8.192MHz signals.
34. 1UIpp = 61ns for 16.384MHz signals.
35. 1UIpp = 51.44ns for 19.44MHz signals.
36. No filter.
37. 40Hz to 100kHz bandpass filter.
38. With respect to reference input signal frequency.
39. After a RST or TCLR.
40. Master clock duty cycle 40% to 60%.
AC Electrical Characteristics - OSCi 20MHz Master Clock Input
Characteristics
Sym
Min
Max
Units
Conditions/Notes
1
Tolerance
-0
+0
ppm
15,18
2
-32
+32
ppm
16,19
3
-100
+100
ppm
17,20
4
Duty cycle
40
60
%
5
Rise time
10
ns
6
Fall time
10
ns
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