LUCL9219AAR-D AGERE [Agere Systems], LUCL9219AAR-D Datasheet - Page 2

• Manufacturer Part Number: LUCL9219AAR-D
• Description: Low-Cost Line Interface with Reverse Battery and Dual Current Limit
• Manufacturer: AGERE [Agere Systems]

L9219A/G Low-Cost Line Interface
with Reverse Battery and Dual Current Limit
Contents
Features ......................................................................1
Description...................................................................1
Pin Information ............................................................4
Functional Description .................................................6
Absolute Maximum Ratings (at TA = 25 C) ................7
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
2
Ring Trip Requirements ..........................................12
dc Applications........................................................19
Longitudinal Balance...............................................21
ac Design ................................................................22
Power Derating .......................................................27
Pin-for-Pin Compatibility with L9217/L9218 ............27
28-Pin PLCC ...........................................................28
Battery Feed.........................................................19
Current Limit.........................................................19
Overhead Voltage ............................................... 19
Rate of Battery Reversal ......................................20
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
L9219 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
Table of Contents
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Page
Figures
Figure 13. Loop Current vs. Loop Voltage .............. 19
Figure 14. Off-Hook Detection Circuit ..................... 20
Figure 15. Ring Trip Equivalent Circuit
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 8.
Table 9.
Table 10.
Table 11.
Table 12.
and 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 ........................ 11
Logic Inputs and Outputs ...................... 12
Parts List for Loop Start Application
Circuit Using T7504-Type Codec ......... 16
200 W + 680 W || 0.1 mF First-
Generation Codec Design Parameters . 17
Parts List for Loop Start Application
Circuit Using T8536-Type Codec ......... 18
FB1/FB2 Values vs. Typical Ramp
Time ...................................................... 20
November 2001
Agere Systems Inc.
Data Sheet
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