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參數資料
| 型號： | LUCL8560EP-D |
| 英文描述： | Low-Power SLIC with Ringing |
| 中文描述： | 低功耗振鈴用戶接口 |
| 文件頁數： | 2/46頁 |
| 文件大?。?/td> | 842K |
| 代理商： | LUCL8560EP-D |
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Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
2
Lucent Technologies Inc.
Table of Contents
Contents
Page
Features .................................................................... 1
Description ................................................................. 1
Pin Information ........................................................... 6
Functional Description................................................ 9
Absolute Maximum Ratings ..................................... 10
Recommended Operating Conditions ...................... 11
Electrical Characteristics.......................................... 11
Ring Trip Requirements......................................... 16
Test Configurations .................................................. 17
Applications ............................................................. 19
Characteristic Curves............................................. 19
dc Applications ...................................................... 21
Battery Feed...................................................... 21
Overhead Voltage ............................................ 22
Adjusting Overhead Voltage ............................. 23
Adjusting dc Feed Resistance........................... 23
Adjusting Overhead Voltage and dc Feed
Resistance Simultaneously.............................. 24
Loop Range....................................................... 24
Off-Hook Detection ........................................... 24
Ring Ground Detection...................................... 25
Longitudinal Balance.............................................. 25
Power Derating ..................................................... 25
Battery Switch ....................................................... 26
V
CC
/V
EE
Supplies ................................................... 27
Power Ringing ....................................................... 27
Ringing SLIC Balanced Ring Signal
Generation....................................................... 27
POTS for ISDN Terminal Adapters ................... 27
Contents
Page
Power Ringing Load.......................................... 28
Crest Factor....................................................... 28
Current-Limit Switch.......................................... 29
Ring Trip............................................................ 29
Reference Designs for ISDN TA Applications... 31
Design Considerations .......................................... 33
Unbalanced Bused Ring Signal Application...... 33
Ring Trip Detection............................................ 33
ac Design .............................................................. 37
First-Generation Codecs ................................... 37
Second-Generation Codecs.............................. 37
Third-Generation Codecs.................................. 37
Design Examples................................................... 39
Example 1, Real Termination............................ 39
Example 2, Complex Termination ..................... 39
Example 3, Complex Termination Without
Spare Op Amp ................................................. 39
Complex Termination Impedance Design
Example Using L8560 Without Spare
Op Amp............................................................ 40
ac Interface Using First-Generation Codec....... 40
Transmit Gain.................................................... 41
Receive Gain..................................................... 42
Hybrid Balance.................................................. 42
Blocking Capacitors........................................... 43
Outline Diagrams...................................................... 44
32-Pin PLCC......................................................... 44
44-Pin PLCC......................................................... 45
Ordering Information................................................. 46
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