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參數資料
| 型號： | L8567 |
| 英文描述： | SLIC for Peoples Republic of China Applications |
| 中文描述： | 為人民共和國的中國用戶接口的應用 |
| 文件頁數： | 2/42頁 |
| 文件大小： | 701K |
| 代理商： | L8567 |
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2
Lucent Technologies Inc.
Data Sheet
August 1999
People’s Republic of China Applications
L8567 SLIC for
Table of Contents
Contents
Page
Features ......................................................................1
Description...................................................................1
General...................................................................1
Application for People’s Republic of China ............4
Pin Information ............................................................6
Coding Information......................................................9
Absolute Maximum Ratings.......................................11
Recommended Operating Conditions .......................11
Electrical Characteristics...........................................12
Logic Interface .....................................................14
Ring Trip Requirements .......................................16
Test Configurations ...................................................17
RFI Rejection........................................................19
Functional Description...............................................21
General.................................................................21
Use with T7507 Codec for Use in People’s
Republic of China ..............................................21
Chip Set Performance Specifications........................22
Gain......................................................................22
Gain Flatness—In Band.......................................22
Gain Flatness—Out of Band—High
Frequencies.......................................................22
Gain Flatness—Out of Band—Low
Frequencies.......................................................22
Loss vs. Level Relative to Loss at –10 dBm
Input at 1020 Hz ................................................23
Return Loss..........................................................23
Hybrid Balance.....................................................23
Applications...............................................................24
Design Considerations.........................................26
Characteristic Curves...........................................27
Power Control.......................................................28
Power Control—Auxiliary Battery.........................29
Power Control—32-Pin PLCC with Power
Control Resistor.................................................29
Power Considerations..........................................30
Power Control—44-Pin PLCC Package...............32
dc Characteristics......................................................33
Loop Range..........................................................34
dc Applications ..........................................................34
On-Hook Transmission.........................................34
Supervision...........................................................35
Loop Closure........................................................35
Ring Trip Detection...............................................36
Other Supervision Functions................................36
Latched Parallel Data Interface............................37
ac Design .............................................................38
First-Generation Codecs ......................................38
Second-Generation Codecs.................................38
Third-Generation Codecs.....................................38
T7507 Codec........................................................38
Outline Diagrams.......................................................39
32-Pin PLCC ........................................................39
44-Pin PLCC ........................................................40
Ordering Information..................................................41
Figures
Page
Figure 1. Functional Diagram .....................................5
Figure 2. 32-Pin Diagram (PLCC Chip) ......................6
Figure 3. 44-Pin Diagram (PLCC Chip) ......................6
Figure 4. Ring Trip Circuits .......................................16
Figure 5. Timing Requirements ................................16
Figure 6. Basic Test Circuit ......................................17
Figure 7. Metallic PSRR ...........................................18
Figure 8. Longitudinal PSRR ....................................18
Figure 9. Longitudinal Balance .................................18
Figure 10. Longitudinal Impedance ..........................18
Figure 11. ac Gains ..................................................18
Figure 12. RFI Rejection Test Circuit .......................19
Figure 13. RFI Testing, Forward Battery,
600
Loop, No Capacitor, 1 Vrms .........20
Figure 14. RFI Testing, Forward Battery,
600
Loop, No Capacitor, 2 Vrms .........20
Figure 15. Termination Impedance ...........................22
Figure 16. Transmit and Receive Direction
Frequency-Dependent Loss Relative
to Gain at 3400 Hz ..................................22
Figure 17. Loss vs. Level ..........................................23
Figure 18. Return Loss .............................................23
Figure 19. Hybrid Balance ........................................23
Figure 20. Basic Loop Start Application Using
T7507 Codec and L7583 Switch for
200
+ (680
|| 100 nF) Complex
Termination and Hybrid Balance .............24
Figure 21. L8567 Typical V
CC
Power Supply
Rejection .................................................27
Figure 22. L8567 Typical V
BAT
Power Supply
Rejection .................................................27
Figure 23. L8567 Loop Current vs. Loop Voltage .....27
Figure 24. L8567 Loop/Battery Current (with Battery
Switch) vs. Loop Resistance ...................27
Figure 25. Power Derating ........................................28
Figure 26. Tip/Ring Voltage Decrease .....................33
Figure 27. SLIC 2-Wire Output Stage .......................34
Figure 28. Ring Trip Equivalent Circuit and
Equivalent Application .............................36
Figure 29. Simplified Control Scheme ......................37
Figure 30. Logic Output Latches .............................. 38
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