LUCL9218AAR-D AGERE [Agere Systems], LUCL9218AAR-D Datasheet
LUCL9218AAR-D
Related parts for LUCL9218AAR-D
LUCL9218AAR-D Summary of contents
Page 1
L9218A/G Low-Cost Line Interface Features Basic forward battery only SLIC functionality at a low cost Pin compatible with Agere Systems Inc. L9219 and L9217 SLIC Low active power (typical 138 mW during on-hook transmission) Low-power scan mode for low-power, on-hook ...
Page 2
L9218A/G Low-Cost Line Interface Contents Features ......................................................................1 Description...................................................................1 Pin Information ............................................................4 Functional Description .................................................6 Absolute Maximum Ratings ( Recommended Operating Conditions .........................7 Electrical Characteristics .............................................8 Ring Trip Requirements ..........................................12 Test Configurations ...................................................13 Applications ...............................................................15 dc Applications....................................................... 19 Battery ...
Page 3
Data Sheet November 2001 Description (continued LOOP CLOSURE DETECTOR LCTH RTSP RING TRIP DETECTOR RTSN Agere Systems Inc. L9218A/G Low-Cost Line Interface POWER CONDITIONING AND REFERENCE FORWARD AND REVERSE BATTERY RECTIFIER + AX – V/A AAC ...
Page 4
L9218A/G Low-Cost Line Interface Pin Information RCVP RCVN LCTH DCOUT V BAT PR CF2 Table 1. Pin Descriptions PLCC Symbol Type PROG 2 NC — — — RCVP I 6 RCVN ...
Page 5
Data Sheet November 2001 Pin Information (continued) Table 1. Pin Descriptions (continued) PLCC Symbol Type 7 LCTH I 8 DCOUT — BAT 10 PR I/O 11 CF2 — 12 CF1 — 13 B2/NC — ...
Page 6
L9218A/G Low-Cost Line Interface Functional Description Table 2. Input State Coding Powerup, Forward Battery. Normal talk and battery feed state. Pin PT is positive with respect to PR. On-hook transmission is enabled. Low current limit is ...
Page 7
Data Sheet November 2001 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso- lute stress ratings only. Functional operation of the device is not implied at these or ...
Page 8
L9218A/G Low-Cost Line Interface Electrical Characteristics Minimum and maximum values are testing requirements in the temperature range of 25 ° °C and battery range of – –70 V. These minimum and maximum values are guaranteed to ...
Page 9
Data Sheet November 2001 Electrical Characteristics Table 5. 2-Wire Port Parameter Tip or Ring Drive Current = dc + Longitudinal + Signal Currents Signal Current Longitudinal Current Capability per Wire 2 dc Loop Current Limit : Allowed Range Including Tolerance ...
Page 10
L9218A/G Low-Cost Line Interface Electrical Characteristics Table 6. Analog Pin Characteristics Parameter Differential PT/PR Current Sense (DCOUT): Gain (PT/PR to DCOUT) Offset Voltage LOOP Loop Closure Detector Threshold (R On- to Off-hook Threshold (scan mode) Off- ...
Page 11
Data Sheet November 2001 Electrical Characteristics Table 7. ac Feed Characteristics Parameter 1 ac Termination Impedance Longitudinal Impedance at PT/PR Total Harmonic Distortion—200 kHz Off-hook On-hook Transmit Gain kHz (PT/PR to VITR) (current limit) ...
Page 12
L9218A/G Low-Cost Line Interface Electrical Characteristics Table 8. Logic Inputs and Outputs All outputs are open collectors with internal way to power up in disconnect state. Parameter Input Voltages: Low Level (permissible range) High Level (permissible range) Input ...
Page 13
Data Sheet November 2001 Test Configurations TIP R LOOP 100 /600 RING 43.2 k 22.1 k 402 274 k V BAT BAT 100 4 BAT V CC TIP + BASIC TEST CIRCUIT ...
Page 14
L9218A/G Low-Cost Line Interface Test Configurations (continued) 100 F TIP 368 V M 368 – RING 100 F LONGITUDINAL BALANCE = 20 log Figure 7. Longitudinal Balance 0.01 F 82.5 600 L7591 V S ...
Page 15
Data Sheet November 2001 Applications A basic loop start reference circuit, using bused ringing with the L9218 SLIC and the T7504 first-generation codec, is shown in Figure 11. This circuit is designed for a 200 transhybrid. Transmit gain is set ...
Page 16
L9218A/G Low-Cost Line Interface Applications (continued) Table 10. Parts List for Loop Start Application Circuit Using T7504-Type Codec Name Integrated Circuits SLIC L9218 Protector Agere L7591 Ringing Relay Agere L7581/2/3 or EMR Codec T7504 Overvoltage Protection Fusible ...
Page 17
Data Sheet November 2001 Applications (continued) A basic loop start reference circuit, using bused ringing with the L9218 SLIC and the T8536 third-generation codec, is shown in Figure 12. R PROG 1 35 PROG R 7 LCTH LCTH ...
Page 18
L9218A/G Low-Cost Line Interface Applications (continued) Table 11. Parts List for Loop Start Application Circuit Using T8536-Type Codec Name Integrated Circuits SLIC L9218 Protector Agere L7591 Ringing Relay Agere L7581/2/3 or EMR Codec T8536 Overvoltage Protection Fusible ...
Page 19
Data Sheet November 2001 Applications (continued) dc Applications Battery Feed The dc feed characteristic can be described by: V – -------------------------------------------- - – ...
Page 20
L9218A/G Low-Cost Line Interface Applications (continued) dc Applications (continued) Loop Range The equation below can be rearranged to provide the loop range for a required loop current: Off-Hook Detection The loop closure comparator has built-in longitudinal rejection, eliminating the need ...
Page 21
Data Sheet November 2001 Applications (continued) dc Applications (continued) Ring Trip Detection The ring trip circuit is a comparator that has a special input section optimized for this application. The equivalent circuit is shown in Figure 15, along with its ...
Page 22
L9218A/G Low-Cost Line Interface Applications (continued) ac Design Codec Types At this point in the design, the codec needs to be selected. The interface network between the SLIC and codec can then be designed. There are four key ac design ...
Page 23
Data Sheet November 2001 Applications (continued) ac Design (continued) Receive Interface (continued) With a third-generation codec, the line card designer has different concerns. To design the ac interface, the designer must first decide upon all termination imped- ance, hybrid balances, ...
Page 24
L9218A/G Low-Cost Line Interface Applications (continued) ac Design (continued) Example 1: Real Termination (First-Generation Codec) (continued) The following design equations refer to the circuit in Figure 16. Use these to synthesize real termination imped- ance. Termination Impedance ...
Page 25
Data Sheet November 2001 Applications (continued) ac Design (continued) Example 2: Complex Termination (First-Generation Codec) Below are design equations for complex termination (see Figure 17 and Figure 18 7.86 ...
Page 26
L9218A/G Low-Cost Line Interface Applications (continued) ac Design (continued) Example 2: Complex Termination (First-Generation Codec) (continued TGS TGS R = 8.06 k TGP –I –I T/R T/R 201.2 AX RCVN R CVN RCVP R CVP Figure 17. Interface ...
Page 27
Data Sheet November 2001 Applications (continued) Power Derating Operating temperature range, maximum current limit, maximum battery voltage, minimum dc loop, and pro- tection resistor values will influence the overall thermal performance. This section shows the relevant design equations and considerations ...
Page 28
L9218A/G Low-Cost Line Interface Outline Diagram 28-Pin PLCC Dimensions are in millimeters. PIN #1 IDENTIFIER ZONE 12.446 0.127 11.506 0.076 0.51 MIN 1.27 TYP 0.330/0.533 Data Sheet November 2001 25 11.506 ...
Page 29
... Data Sheet November 2001 Ordering Information Device LUCL9218AAR-D LUCL9218AAR-DT LUCL9218GAR-D LUCL9218GAR-DT Agere Systems Inc. L9218A/G Low-Cost Line Interface Package 28-Pin PLCC (Dry Bag) Gain of 12 28-Pin PLCC (Tape and Reel, Dry Bag) Gain of 12 28-Pin PLCC (Dry Bag) Gain of 2 28-Pin PLCC ...
Page 30
IEEE is a registered trademark of The Institute of Electrical and Electronics Engineers, Inc registered trademark of Hewlett-Packard Company. For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http://www.agere.com E-MAIL: docmaster@agere.com N. AMERICA: ...