LUCL8575BP-TR AGERE [Agere Systems], LUCL8575BP-TR Datasheet
LUCL8575BP-TR
Related parts for LUCL8575BP-TR
LUCL8575BP-TR Summary of contents
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March 1997 Features Two channels in a single package Serial data interface Per-channel powerdown Low standby power ( 65 mW per channel) Integrated protection No external protection device required Battery noise cancellation Switchhook detector Ring-trip detector Switchhook and ring-trip detector ...
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L8575 Dual-Resistive, Low-Cost SLIC Contents Features .................................................................................................................................................................. 1 Description ...............................................................................................................................................................1 Preliminary Pin Information ..................................................................................................................................... 5 Absolute Maximum Ratings (@ T A Electrical Characteristics ......................................................................................................................................... 9 Relay Drivers ..................................................................................................................................................... 11 Transmission...................................................................................................................................................... 13 Serial Interface and Logic .................................................................................................................................. 14 Applications ........................................................................................................................................................... 16 ...
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Advance Data Sheet March 1997 Tables Table 1. Pin Descriptions .......................................................................................................................................... 5 Table 2. Operating Conditions and Powering ............................................................................................................9 Table 3. Battery Feed, Switchhook Detectors (LCA and LCB), and Fault Detectors (FLTA and FLTB)................... 10 Table 4. Ring-Trip Detectors (RTA, ...
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L8575 Dual-Resistive, Low-Cost SLIC Description (continued) RDDA RDRA RDRA RELAY RELAY RELAY DRIVER DRIVER DRIVER SWITCHHOOK V BAT AND FAULT DETECTORS A TSA RSA PTA RTPA RING-TRIP DETECTOR A RTNA PRA SWITCHHOOK V BAT AND FAULT DETECTORS B TSB RSB ...
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Advance Data Sheet March 1997 Preliminary Pin Information RDDB 7 RDRB 8 RDTB 9 RTPB 10 RTNB 11 XMTB 12 TSB 13 RSB 14 RGBNB 15 VRNB 16 IRPB 17 Table 1. Pin Descriptions Pin Symbol Type 1 NC — ...
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L8575 Dual-Resistive, Low-Cost SLIC Preliminary Pin Information Table 1. Pin Descriptions (continued) Pin Symbol Type 11 RTNB I Ring-Trip Negative (Channel B). Negative sense input for the ring-trip detector. 12 XMTB O Transmit Signal Output (Channel B). Channel B transmit ...
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Advance Data Sheet March 1997 Preliminary Pin Information Table 1. Pin Descriptions (continued) Pin Symbol Type 31 RGBNA I Battery Noise Gain Resistor (Channel A). The current flowing out of PRA is 50 times the current flowing into RGBNA. Connect ...
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L8575 Dual-Resistive, Low-Cost SLIC 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 ...
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Advance Data Sheet March 1997 Electrical Characteristics Generally, minimum and maximum values are testing requirements. However, some parameters may not be tested in production because they are guaranteed by design and device characterization. Typical values reflect the design center or ...
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L8575 Dual-Resistive, Low-Cost SLIC Electrical Characteristics Table 3. Battery Feed, Switchhook Detectors (LCA and LCB), and Fault Detectors (FLTA and FLTB) Parameter 1 Loop Resistance Range : (3.17 dBm overload into 600 ) ...
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Advance Data Sheet March 1997 Electrical Characteristics Relay Drivers The relay drivers operate using the V power up and remain in the off-state until the SLIC is configured via the serial data interface. The table below sum- marizes their parameter ...
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L8575 Dual-Resistive, Low-Cost SLIC Electrical Characteristics Relay Drivers (continued) Table 6. Analog Signal Pins (continued) Parameter XMTA and XMTB: Output Drive Current Output Voltage Swing (3 mA load): Maximum Minimum 2 Output Short-circuit Current Output Impedance (60 Hz—3.4 kHz) Output ...
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Advance Data Sheet March 1997 Electrical Characteristics Transmission Transmit direction is Tip/Ring to XMT. Receive direction is IRP/VRN to Tip/Ring. Table 7. Transmission Characteristics Parameter 1 Longitudinal Balance ( IEEE Std. 455—1976) 50 Hz—1 kHz 1 kHz—3 kHz 2 Metallic ...
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L8575 Dual-Resistive, Low-Cost SLIC Electrical Characteristics Serial Interface and Logic The tables below summarize the parameter and timing requirements for logic inputs CLK, EN, DI, and DO. Table 8. Logic Inputs (CLK, EN, and DI) and Outputs (DO) 1 Parameter ...
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Advance Data Sheet March 1997 Electrical Characteristics Serial Interface and Logic (continued) 0 –10 –20 –30 –40 –50 – Figure 3. Power Supply Rejection vs. Frequency Diagram Lucent Technologies Inc. (continued) V DDA (METALLIC) V BAT (METALLIC) 2 ...
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L8575 Dual-Resistive, Low-Cost SLIC Applications General The L8575 is a dual (channels A and B) subscriber line interface circuit (SLIC). Each channel operates inde- pendently such that no interaction occurs between the channels. The following description applies to both channels ...
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Advance Data Sheet March 1997 Applications (continued) Resistor Module (continued) FUSE R 7 RING RING Note: Pin numbers are MMC A31A8575AA pin numbers. Resistors are labeled per MMC A31A8575AA description. Nodes are L8575 ...
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L8575 Dual-Resistive, Low-Cost SLIC Applications (continued) Resistor Module (continued) Resistors R through R set the gain of the SLIC in the 3 6 transmit (2-wire to 4-wire) direction. This is shown in Figure 100 ...
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Advance Data Sheet March 1997 Applications (continued) Protection (continued) The Tip/Ring drive amplifiers, which feed the ac signal to nodes PR and PT, are high-impedance current driv- ers. Since these nodes are current sources, the value of protection current-limiting series ...
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L8575 Dual-Resistive, Low-Cost SLIC Applications (continued) Protection (continued) Similar consideration to the individual resistor and total module power capability should be given to full voltage power faults, but taking into account the fault detector will isolate the SLIC and resistor ...
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Advance Data Sheet March 1997 Applications (continued) On-Hook Transmission In powerup mode, the L8575 SLIC provides a dc bias of 5.6 mA. The 5.6 mA bias is also present under on- hook conditions. The L8575 SLIC is able to support ...
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L8575 Dual-Resistive, Low-Cost SLIC Applications (continued) Serial Data Interface (continued) Figure 7 shows the timing characteristics and requirement definitions SDE EN t HDC CLK DO Figure 7. Timing Requirements for CLK, EN, DI, and DO Table 12. Truth ...
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Advance Data Sheet March 1997 Electrical Characteristics Serial Data Interface (continued) Table 14. Input DATA Bit Definition Input DATA Bit RZA D0A Channel A ringing voltage zero crossing detector output (positive = 1). FLTA D1A Channel A fault detector output ...
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L8575 Dual-Resistive, Low-Cost SLIC Operating States Each channel of the L8575 has four operating states: active, test, powerdown with relay driver RDD ON, and powerdown with relay driver RDD OFF. These states are selected using 2 bits, D0 and D1, ...
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Advance Data Sheet March 1997 Supervision Off-Hook Detection The off-hook detection threshold is a function of the dc feed resistors R and R , and of a ratio of resistors that 1 2 are fixed on the L8575 silicon die. ...
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L8575 Dual-Resistive, Low-Cost SLIC Supervision (continued) Fault Detection The dc feed resistors R and R need to be designed survive lightning surges and to dissipate power associ- ated with a Ring ground dc fault and specified ac ...
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Advance Data Sheet March 1997 dc Characteristics I/V Characteristics Resistors R and R are the dc feed resistors connected from battery to Ring, and R2 is connected from Tip to ground. The dc loop current is ...
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L8575 Dual-Resistive, Low-Cost SLIC ac Design Codec Features and Selection Summary There are four key ac design parameters: Termination impedance is the impedance looking into the 2-wire port of the line card set to match the impedance of ...
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Advance Data Sheet March 1997 ac Design (continued) Design Equations The following section gives the relevant design equa- tions to choose component values for any desired gain, termination and balance network, assuming a complex termination is desired. Complex termination will ...
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L8575 Dual-Resistive, Low-Cost SLIC ac Design (continued) Design Equations (continued) RESISTOR MODULE 100 k 100 k 200 k 200 T/R T/R T/R 1 – 300 V BAT Figure 13. Initial ...
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Advance Data Sheet March 1997 ac Design (continued) Design Equations (continued) The Tip/Ring differential current is given by 200 I – ---------- - = T The voltage at pin XMT is given by: V – T/R ...
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L8575 Dual-Resistive, Low-Cost SLIC ac Design (continued) Design Equations (continued) To scale C (higher), increase C (and decrease increasing the GX1 GX1 T1 ing the circuit in Figure 13 and by ...
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Advance Data Sheet March 1997 Application Diagram The following diagram and table show the basic components required with the L8575 SLIC. Specific component values are given in cases where the value is fixed. In cases where the value may change ...
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L8575 Dual-Resistive, Low-Cost SLIC Application Diagram (continued) 300 1 200 TIP 33 KTA2 100 XMTA TEST OUT (CHANNEL A) BUS 100 200 k KTA1 ...
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Advance Data Sheet March 1997 Outline Diagram 44-Pin PLCC Dimensions are in millimeters. PIN #1 IDENTIFIER Lucent Technologies Inc. 17.65 MAX 16.66 MAX ZONE 0.51 MIN 1.27 TYP 0.53 MAX Dual-Resistive, Low-Cost SLIC ...
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L8575 Dual-Resistive, Low-Cost SLIC Ordering Information Device Part No. LUCL8575 BP Dual-Resistive SLIC LUCL8575 BP-TR Dual-Resistive SLIC For additional information, contact your Microelectronics Group Account Manager or the following: INTERNET: http://www.lucent.com/micro U.S.A.: Microelectronics Group, Lucent Technologies Inc., 555 Union Boulevard, ...