L9215A データシートの表示（PDF） - Agere -> LSI Corporation

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L9215A

Short-Loop Sine Wave Ringing SLIC

Agere -> LSI Corporation 

L9215A/G

Short-Loop Sine Wave Ringing SLIC

Data Sheet

September 2001

Table of Contents

Contents

Page Contents

Page

Introduction ..................................................................1

Features ....................................................................1

Applications...............................................................1

Description ................................................................1

Features ......................................................................4

Description...................................................................4

Architecture Diagram...................................................7

Pin Information ............................................................8

Operating States........................................................11

State Definitions ........................................................12

Forward Active ........................................................12

Reverse Active........................................................12

Forward Active with PPM ........................................12

Reverse Active with PPM........................................12

Scan ........................................................................12

On-Hook Transmission—Forward Battery ..............12

On-Hook Transmission with PPM—Forward

Battery ....................................................................13

On-Hook Transmission—Reverse Battery ..............13

On-Hook Transmission with PPM—Reverse

Battery ....................................................................13

Disconnect ..............................................................13

Ring.........................................................................13

Thermal Shutdown..................................................13

Absolute Maximum Ratings.......................................14

Electrical Characteristics ...........................................15

Test Configurations ...................................................22

Applications ...............................................................24

Power Control .........................................................24

dc Loop Current Limit..............................................24

Overhead Voltage ...................................................25

Active Mode .........................................................25

On-Hook Transmission Mode...............................26

Scan Mode ...........................................................26

Ring Mode............................................................26

Loop Range ........................................................... 26

Battery Reversal Rate ............................................ 26

Supervision............................................................... 27

Loop Closure.......................................................... 27

Ring Trip ................................................................ 27

Tip or Ring Ground Detector .................................. 27

Power Ring ............................................................ 27

Sine Wave Input Signal and Sine Wave Power

Ring Signal Output............................................ 28

PWM Input Signal and Sine Wave Power

Ring Signal Output............................................ 30

5 V VCC Operation ............................................... 31

3.3 V VCC Operation ............................................ 32

Square Wave Input Signal and Trapezoidal

Power Ring Signal Output ................................ 32

Periodic Pulse Metering (PPM) ................................ 34

ac Applications ......................................................... 34

ac Parameters........................................................ 34

Codec Types .......................................................... 34

First-Generation Codecs ..................................... 34

Third-Generation Codecs .................................... 34

ac Interface Network .............................................. 34

Design Examples ................................................... 35

First-Generation Codec ac Interface

Network—Resistive Termination ...................... 35

Example 1, Real Termination .............................. 36

First-Generation Codec ac Interface

Network—Complex Termination ....................... 39

Complex Termination Impedance Design

Example............................................................ 39

ac Interface Using First-Generation Codec ......... 39

Set ZTG—Gain Shaping....................................... 39

Transmit Gain...................................................... 40

Receive Gain....................................................... 41

Hybrid Balance .................................................... 41

Blocking Capacitors............................................. 42

Third-Generation Codec ac Interface

Network—Complex Termination ....................... 45

Outline Diagrams...................................................... 47

32-Pin PLCC .......................................................... 47

48-Pin MLCC.......................................................... 48

48-Pin MLCC, JEDEC MO-220 VKKD-2................ 49

Ordering Information................................................. 50

2

Agere Systems Inc.

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