LUCL8576BP-D AGERE [Agere Systems], LUCL8576BP-D Datasheet - Page 2

• Manufacturer Part Number: LUCL8576BP-D
• Description: Dual Ringing SLIC
• Manufacturer: AGERE [Agere Systems]

Contents
L8576B Dual Ringing SLIC
Features ......................................................................1
Applications .................................................................1
Description...................................................................1
Pin Information ............................................................5
Functional Description .................................................7
Operating States..........................................................8
Absolute Maximum Ratings ........................................9
Electrical Characteristics ...........................................10
Test Configurations .................................................. 14
Applications ..............................................................15
Outline Diagram ........................................................25
Ordering Information .................................................26
Tables
Table 1. Pin Descriptions ............................................5
Table 2. Input State Coding ........................................9
Table 3. Operating Conditions and Powering ...........10
Table 4. Ring Trip Detector ......................................10
Table 5. Battery Feed ...............................................11
Table 6. Analog Signal Pins .....................................12
Table 7. ac Feed Characteristics ..............................12
Table 8. Isolation Between Channels .......................13
Table 9. Data Interface and Logic ............................13
2
General .....................................................................7
Protection..................................................................7
Tip/Ring Drivers ........................................................7
Battery Operation......................................................7
Transmit and Receive Interface ................................7
Data Interface ...........................................................8
Loop Current Detector ..............................................8
Characteristic Curves..............................................15
dc Design ................................................................17
Power Ringing.........................................................18
ac Design ................................................................19
Use of an Auxiliary Battery Supply..........................24
44-Pin PLCC ...........................................................25
Table of Contents
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Page
Figures
Figure 1. Architectural Diagram ................................. 3
Figure 2. Typical 600
Figure 3. 44-Pin PLCC Pin Diagram .......................... 5
Figure 4. Pretrip Circuit ............................................ 11
Figure 5. Basic Test Circuit ..................................... 14
Figure 6. Metallic PSRR .......................................... 14
Figure 7. Longitudinal PSRR ................................... 14
Figure 8. Longitudinal Balance ................................ 15
Figure 9. Longitudinal Impedance ........................... 15
Figure 10. ac Gains ................................................. 15
Figure 11. Receive Gain and Hybrid Balance vs.
Figure 12. Transmit Gain and Return Loss vs.
Figure 13. Loop Current vs. Loop Voltage ............... 16
Figure 14. Loop Current vs. Loop Resistance ......... 16
Figure 15. SLIC Power Dissipation vs. Loop
Figure 16. SLIC Power Dissipation vs. Loop
Figure 17. Loop Current vs. Loop Voltage ............... 17
Figure 18. Ringing Waveform Crest Factor = 1.6 .... 18
Figure 19. Ringing Waveform Crest Factor = 1.2 .... 18
Figure 20. ac Equivalent Circuit Using a T8503
Figure 21. ac Interface Circuit Using First-
Figure 22. ac Interface Circuit Using First-
One Channel Shown) ................................. 4
Frequency .............................................. 15
Frequency .............................................. 15
Resistance (V
Resistance (V
Codec ..................................................... 20
Generation Codec (Blocking Capacitors
Not Shown) ............................................. 22
Generation Codec (Including Blocking
Capacitors) ............................................. 23
Application Circuit (Only
BAT
BAT
= –48 V) ...................... 16
= –65 V) ...................... 16
Agere Systems Inc.
May 2001
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