Preliminary Data Sheet

September 2001

High-Voltage Ringing SLIC for VoIP Applications

L9500A

Agere Systems Inc.

3

Table of Contents

Figures

Page

Figure 1. Architecture Diagram ................................................................................................................................6

Figure 2. 28-pin PLCC Diagram ...............................................................................................................................7

Figure 3. 48-pin MLF Diagram .................................................................................................................................7

Figure 4. Basic Test Circuit .................................................................................................................................... 19

Figure 5. Metallic PSRR ......................................................................................................................................... 20

Figure 6. Longitudinal PSRR .................................................................................................................................. 20

Figure 7. Longitudinal Balance ............................................................................................................................... 20

Figure 8. ac Gains .................................................................................................................................................. 20

Figure 9. Ringing Waveform Crest Factor = 1.6 ..................................................................................................... 24

Figure 10. Ringing Waveform Crest Factor = 1.2 ................................................................................................... 24

Figure 11. RINGIN Operation .................................................................................................................................. 25

Figure 12. Reference Schematic with

L9500 SLIC ........................................................................................................................................... 26

Tables

Page

Table 1. Pin Descriptions ........................................................................................................................................8

Table 2. Control States .............................................................................................................................................9

Table 3. Supervision Coding .....................................................................................................................................9

Table 4. Recommended Operating Characteristics .............................................................................................. 11

Table 5. Thermal Characteristics ............................................................................................................................11

Table 6. Environmental ........................................................................................................................................... 12

Table 7. 5 V Supply Currents .................................................................................................................................. 12

Table 8. 5 V Powering .............................................................................................................................................12

Table 9. 3.3 V Supply Currents .............................................................................................................................. 13

Table 10. 3.3 V Powering ....................................................................................................................................... 13

Table 11. 2-Wire Port .............................................................................................................................................14

Table 12. Analog Pin Characteristics .................................................................................................................... 15

Table 13. ac Feed Characteristics ........................................................................................................................ 16

Table 16. Ground Start ........................................................................................................................................... 17

Table 17. Ringing Specifications ............................................................................................................................18

Table 18. Ring Trip ................................................................................................................................................. 18

Table 19. Typical Active Mode On- to Off-Hook Tip/Ring Current-Limit Transient Response ............................... 22

Table 20. FB1 and FB2 Values vs. Typical Ramp Time ........................................................................................ 23

Table 21. Parts List L9500; Agere L9500 and

Board—SLIC Daughter Boad Components); Fully Programmable ........................................................ 27