L9500A Datasheet, PDF (2/32 Pages) Agere Systems – High-Voltage Ringing SLIC for VolP Applications

L9500A
High-Voltage Ringing SLIC for VoIP Applications
Table of Contents
Preliminary Data Sheet
September 2001
Contents
Page
L9500A Introduction ..................................................................................................................................................1
Features ..................................................................................................................................................................1
Applications............................................................................................................................................................. 1
Description ..............................................................................................................................................................1
Features ....................................................................................................................................................................4
Description................................................................................................................................................................. 4
Architecture Diagram.................................................................................................................................................6
Pin Information ..........................................................................................................................................................7
Operating States........................................................................................................................................................9
State Definitions ......................................................................................................................................................10
Forward Active ......................................................................................................................................................10
Reverse Active ......................................................................................................................................................10
Scan ......................................................................................................................................................................10
On-Hook Transmission—Forward Battery ............................................................................................................10
On-Hook Transmission—Reverse Battery ............................................................................................................10
Disconnect ............................................................................................................................................................10
Ring ....................................................................................................................................................................... 10
Ground Start .........................................................................................................................................................10
Thermal Shutdown ................................................................................................................................................10
Absolute Maximum Ratings (@ TA = 25 °C) ............................................................................................................11
Electrical Characteristics .........................................................................................................................................12
Test Configurations .................................................................................................................................................19
Applications .............................................................................................................................................................21
Power Control .......................................................................................................................................................21
dc Loop Current Limit............................................................................................................................................22
Overhead Voltage .................................................................................................................................................22
Active Mode .......................................................................................................................................................22
Scan Mode .........................................................................................................................................................22
On-Hook Transmission Mode.............................................................................................................................22
Ring Mode ..........................................................................................................................................................22
Loop Range ..........................................................................................................................................................22
Battery Reversal Rate ...........................................................................................................................................23
Supervision ...........................................................................................................................................................23
Loop Closure.........................................................................................................................................................23
Ring Trip ...............................................................................................................................................................23
Ground Start .........................................................................................................................................................23
Power Ring ...........................................................................................................................................................24
Sine Wave Input Signal and Sine Wave Power Ring Signal Output ..................................................................24
ac Applications ........................................................................................................................................................25
ac Parameters.......................................................................................................................................................25
Design Examples ..................................................................................................................................................26
First-Generation Codec ac Interface Network—Resistive Termination..............................................................26
Broadcom 3352 Interface Network........................................................................................................ .............26
Outline Diagrams.....................................................................................................................................................28
28-Pin PLCC .........................................................................................................................................................28
48-Pin MLCC ........................................................................................................................................................29
48-Pin MLCC, JEDEC MO-220 VKKD-2...............................................................................................................30
Ordering Information ...............................................................................................................................................31
2
Agere Systems Inc.