LUCL9218AAR-D AGERE [Agere Systems], LUCL9218AAR-D Datasheet - Page 2

• Manufacturer Part Number: LUCL9218AAR-D
• Description: Low-Cost Line Interface
• Manufacturer: AGERE [Agere Systems]

L9218A/G Low-Cost Line Interface
Contents
Features ......................................................................1
Description...................................................................1
Pin Information ............................................................4
Functional Description .................................................6
Absolute Maximum Ratings (at T
Recommended Operating Conditions .........................7
Electrical Characteristics .............................................8
Test Configurations ...................................................13
Applications ...............................................................15
PCB Layout Information ............................................27
Outline Diagram.........................................................28
Ordering Information..................................................29
Figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10. ac Gains..................................................14
Figure 11. Basic Loop Start Application
Figure 12. Basic Loop Start Application
Figure 13. Loop Current vs. Loop Voltage ...............19
Figure 14. Off-Hook Detection Circuit ......................20
2
Ring Trip Requirements ..........................................12
dc Applications....................................................... 19
Longitudinal Balance.............................................. 21
ac Design ............................................................... 22
Power Derating ...................................................... 27
Pin-for-Pin Compatibility with L9217/L9219 ........... 27
28-Pin PLCC .......................................................... 28
Battery Feed.........................................................19
Current Limit.........................................................19
Overhead Voltage ............................................... 19
Loop Range..........................................................20
Off-Hook Detection...............................................20
Ring Trip Detection...............................................21
Codec Types ........................................................22
ac Interface Network ............................................22
Receive Interface .................................................22
Example 1: Real Termination (First-
Generation Codec) .............................................. 23
Example 2: Complex Termination (First-
Generation Codec) ...............................................25
Functional Diagram...................................3
28-Pin PLCC.............................................4
Ring Trip Circuits ....................................12
L9218 Basic Test Circuit.........................13
Metallic PSRR.........................................13
Longitudinal PSRR .................................13
Longitudinal Balance ..............................14
RFI Rejection ..........................................14
Longitudinal Impedance..........................14
Circuit Using T7504-Type Codec............15
Circuit Using T8536-Type Codec............17
A
= 25 C) ................7
Table of Contents
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Figures
Figure 15. Ring Trip Equivalent Circuit and
Figure 16. ac Equivalent Circuit .............................. 23
Figure 17. Interface Circuit Using First-
Figure 18. Interface Circuit Using First-
Tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 9.
Table 10.
Table 11.
Equivalent Application ........................... 21
Generation Codec ( 5 V Battery) .......... 26
Generation Codec (5 V Only Codec) ..... 26
Pin Descriptions ...................................... 4
Input State Coding .................................. 6
Supervision Coding ................................. 6
Power Supply .......................................... 8
2-Wire Port .............................................. 9
Analog Pin Characteristics .................... 10
ac Feed Characteristics
Parts List for Loop Start Application
Circuit Using T7504-Type Codec .......... 16
200
Generation Codec Design Parameters . 17
Parts List for Loop Start Application
Circuit Using T8536-Type Codec .......... 18
680
0.1 F First-
November 2001
Agere Systems Inc.
...................... 11
Data Sheet
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