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LUCL9214AA-DT Datasheet(PDF) 2 Page - Agere Systems |
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LUCL9214AA-DT Datasheet(HTML) 2 Page - Agere Systems |
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2 / 46 page  Preliminary Data Sheet October 2001 Low-Cost Ringing SLIC L9214A/G 2 Agere Systems Inc. Table of Contents Contents Page Introduction..................................................................1 Features ....................................................................1 Applications...............................................................1 Description ................................................................1 Features ......................................................................4 Description...................................................................4 Architecture Diagram...................................................7 Pin Information ............................................................8 Operating States........................................................12 State Definitions ........................................................12 Forward Active (Fast Polarity Reversal) .................12 Off-hook................................................................12 On-hook................................................................12 Forward Active (Slow Polarity Reversal).................12 Off-hook................................................................12 On-hook................................................................12 Reverse Active (Fast Polarity Reversal) .................13 Off-hook................................................................13 On-hook................................................................13 Reverse Active (Slow Polarity Reversal) ................13 Off-hook................................................................13 On-hook................................................................13 Scan ........................................................................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..............................................25 Overhead Voltage ...................................................25 Active Mode .........................................................25 Scan Mode ...........................................................25 On-Hook Transmission Mode...............................25 Ring Mode ............................................................26 Contents Page Loop Range ........................................................... 26 Battery Reversal Rate ............................................ 26 Supervision............................................................... 27 Loop Closure.......................................................... 27 Ring Trip ................................................................ 27 Tip or Ring Ground Detector .................................. 27 Power Ring ............................................................ 27 Periodic Pulse Metering (PPM) ................................ 29 ac Applications ......................................................... 29 ac Parameters........................................................ 29 Codec Types .......................................................... 29 First-Generation Codecs ..................................... 29 Third-Generation Codecs .................................... 29 ac Interface Network .............................................. 29 Design Examples ................................................... 30 First-Generation Codec ac Interface Network—Resistive Termination ...................... 30 Example 1, Real Termination .............................. 31 First-Generation Codec ac Interface Network—Complex Termination ....................... 34 Complex Termination Impedance Design Example ............................................................ 34 ac Interface Using First-Generation Codec ......... 33 Transmit Gain...................................................... 35 Receive Gain....................................................... 36 Hybrid Balance .................................................... 36 Blocking Capacitors............................................. 37 Third-Generation Codec ac Interface Network—Complex Termination ....................... 40 Outline Diagram........................................................ 41 28-Pin SOG............................................................ 42 32-Pin PLCC .......................................................... 43 48-Pin MLCC.......................................................... 44 48-Pin MLCC, JEDEC MO-220 VKKD-2................ 45 Ordering Information................................................. 46 |
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