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SGS-THOMSON SLIC MODELS
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INDEX INTRODUCTION. L3000N/L3010 SLIC BASIC STRUCTURE. L3000N/L3030 SLIC BASIC STRUCTURE. L3000N/L3092 SLIC BASIC STRUCTURE. L303X MONOCHIP SLIC BASIC STRUCTURE. EXAMPLE SPICE SIMULATION WITH L3000N/L3092 SLIC KIT. EXAMPLE SPICE SIMULATION WITH L303X SLIC KIT. INTRODUCTION this note find basic structure SGS-THOMSON Microelectronics SLICs concerning performances. these SLICs present capacitors AC/DC path splitting other loop stability. effect these capacitors neglectible speech band (300 3400Hz) therefore each evaluated typical performances considering their influence. performances wider band very high accuracy requested effect these capacitors must included. Another possibility study effect these caFigure L3000N/3010SLIC Basic Structure. pacitors enter SLIC structure circuit simulator like SPICE, shown this note with L3000N/L3092 SLIC L303X monochip SLIC. L3000N/L3010 SLIC BASIC STRUCTURE Here below basic structure L3000N/L3010 SLIC concerning performances. easier representation high voltage part drawn single ended amplifier with gain Close each node written corresponding number L3010. components names same used data sheet.
AN501/0994
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Figure L3000N/3010 Characteristic.
values depends working point characteristic, particular infinite region region region large capacitor (typ. 22µF) used split components line current. CCOMP small capacitor (typ. 8.2nF) used guarantee loop stability. CCOMP values chosen order have neglectible effect speech band signals, therefore supposing CCOMP equivalent open circuit short circuit following relationships easily obtained from circuit diagram fig. 2.1. Also filter influence speech band neglected. 2.1. SLIC IMPEDANCE LINE TERMINATIONS: (4/5)
therefore (5/2)
2.4. TRANS-HYBRID LOSS
therefore (5/2) ZA/ZB ZML/ZL need more careful evaluation performances include also effect CCOMP, filter above relations simulate system behavior with SPICE other circuit simulators (see example par.
(4/5)
2.2. RECEIVING GAIN 2.3. SENDING GAIN (5/2)
therefore
L3000N/L3030 SLIC BASIC STRUCTURE Here below basic structure L3000N/L3030 SLIC concerning performances. easier representation high voltage part drawn single ended amplifier with gain Close each node written corresponding number L3030 PLCC package. components names same used data sheet. L3000N/L3030 data sheet large AC/DC splitting capacitor (typ. 22µF) avoided using chip capacitor multiplier. following basic structure both cases.
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Figure L3000N/L3030SLIC Configured without Capacitor Multiplier Basic Structure.
Figure L3000N/L3030SLIC Configured with Capacitor Multiplier Basic Structure.
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Figure L3000N/3030 Characteristic.
values depends working point characteristic, particular infinite region region 5/12 region CAC1 sinthesized capacitor obtained with capacitor multiplier relatively large (typ. 22µF) used split components line current. CCOMP small capacitor (typ. 10nF) used guarantee loop stability. CAC1, CAC2 CCOMP values chosen order have neglectible effect speech band signals, therefore supposing CCOMP equivalent open circuit CAC1 sinthetized capacitor obtained with capacitor multiplier equivalent short circuit following relationships easily obtained from circuit diagram fig. Also filter influence speech band neglected. filter impedance supposed equal RGTTX/10 speech band zero frequency 3.1. SLIC IMPEDANCE LINE TERMINATIONS:
therefore 3.3. SENDING GAIN therefore
3.4. TRANS-HYBRID LOSS
(4/5)
therefore ZA/ZB ZML/ZL need more careful evaluation performances include also effect CCOMP, filter above relations simulate system behavior with SPICE other circuit simulators (see example par. L3000N/L3092 SLIC BASIC STRUCTURE Here below basic structure L3000N/L3092 SLIC concerning performances. easier representation high voltage part drawn single ended amplifier with gain Close each node written corresponding number L3092. components names same used data sheet.
3.2. RECEIVING GAIN
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Figure L3000N/3092SLIC Basic Structure.
Figure L3000N/3092DC Characteristic.
value depends working point characteristic, particular infinite region region large capacitor (typ. 47µF) used split components line current. CCOMP small capacitor (typ. 390pF) used guarantee loop stability. CCOMP values chosen order have neglectible effect speech band signals, therefore supposing CCOMP equivalent open circuit short circuit following relationships easily obtained from circuit diagram fig. 4.1. 4.1. SLIC IMPEDANCE LINE TERMINATION (ZAC/
4.3. SENDING GAIN therefore 4.4. TRANS-HYBRID LOSS (RPC/25) therefore ZA/ZB ZML/ZL need more careful evaluation performances include also effect CCOMP above relations simulate system behavior with SPICE other circuit simulators (see example par. L303X MONOCHIP SLIC BASIC STRUCTURE Here below basic structure L303X MONOCHIP SLIC family (L3035, L3036, L3037) concerning performances. Close each node written corresponding number. components names same used data sheet.
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4.2. RECEIVING GAIN
therefore
Figure L303X Monochip SLIC Basic Structure.
Figure L303X Characteristic.
values depends working point characteristic, particular: infinite region region region large capacitor (typ. 4.7µF) used split components line current. CCOMP small capacitors (typ.220pF) used guarantee loop stability good performances. CAC, CCOMP values chosen order have neglectible effect speech band signals, therefore supposing CCOMP equivalent open circuit short circuit following relation ships easily obtained from circuit diagram fig. 5.1. 5.1. SLIC IMPEDANCE LINE TERMINATIONS: (ZAC/
5.2. RECEIVING GAIN
therefore 5.3. SENDING GAIN 2RP) therefore 5.4. TRANS-HYBRID LOSS
(RS/50)
therefore (ZA+RA)/ZB ZS/ZL
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5.5. GAIN Let`s define ZLTTX line impedance frequency ZTTX RTTX impedance CTTX filter (RTTX series with CTTX) frequency. 2.325 buffer gain. From block diagram fig. gain become: ZLTTX GTTX VTTX VTTX ZLTTX residual output VTXres VTTX
[(ZLTTX 2Rp) optimum filter obtained that means ZTTX 50(ZLTTX 2Rp) this case become: Where ZLTTX GTTX ZLTTX
VTXres need more careful evaluation performances include also effect CCOMP above relations simulate system behavior with SPICE other circuit simulators (see example par.
EXAMPLE SPICE SIMULATION WITH L3000N/L3092 SLIC Figure Circuit Diagram L3000N/L3092SLIC ASpice Simulation.
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Figure Network Evaluation; Return Loss Test Impedance.
V(12,16) 20log10 20log10 VIRL
Figure Network Gain Evaluation with Sending Generator Series Impedance Equal
VTX/VSO
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SPICE INPUT FILE L3000N/L3092 SLIC SIMULATION L3092 ANALYSIS **************** CIRCUIT CONFIGURATION USED ******************** PROT. RES. 2x50 OHM; RPC=2.5KOHM FEEDING RES. 2x200 LINE IMPEDANCE RZAC 12.5KOHM (SAME CONFIGURATION L3000N/L3092 TEST CIRCUIT) *********** EXTERNAL COMPONENTS 2.5K RSAC RPAC *CPAC *CAP *CBP CBCC 470P 1MEG CCOMP 390P ************* EXT. COMPONENTS ****************************** ************* MODEL COMPONENTS 10MEG +.05 -1.25 -1MEG
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*.AC .WIDTH IN=80 OUT=80 ****** INSERT ONLY FOLLOWING BLOCKS DEPENDING ******* ****** CHARACTERISTIC REGION ******* CURRENT REGION *********** 10MEG REGION *************** RES. FEED REGION ************* RES. REGION ************** ****** INSERT ONLY FOLLOWING BLOCKS DEPENDING ******* ****** WHICH ANALYSIS WANT ******* GAIN EVALUATION VTX/VL WITH *VRX *.PRINT VDB(20) VP(20) *.PLOT VDB(20) VP(20) .STORE VDB(20) VP(20) GAIN GAIN EVALUATION 2VTX/VSO WITH VRX=0 (SERIES IMP. SENDING GENERATOR ZS)*** .PRINT VDB(20) VP(20) .PLOT VDB(20) VP(20) .STORE VDB(20) VP(20) GAIN GAIN EVALUATION VL/VRX **************** .PRINT VDB(12) VP(12)
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.PLOT VDB(12) VP(12) .STORE VDB(12) VP(12) GAIN ****************************** EVALUATION VTX/VRX ******************* .PRINT VDB(20) VP(20) .PLOT VDB(20) VP(20) .STORE VDB(20) VP(20) EVALUATION *********************** RETURN LOSS EVALUATION ******************** VIRL .PRINT VDB(12,16) .PLOT VDB(12,16) .STORE VDB(12,16) RETURN LOSS EVALUATION *************** INPUT IMPEDANCE EVAL. LINE TERMINALS .PRINT VM(12) VP(12) .PLOT VM(12) VP(12) .STORE VM(12) VP(12) INPUT IMPED. EVALUATION ************** .END
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EXAMPLE SPICE SIMULATION WITH L303X MONOCHIP SLIC. Figure Circuit Diagram L303X Monochip SLIC SPICE Simulation.
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Figure Network Evaluation; Return Loss Test Impedance.
Figure Network Gain Evaluationwith Sending Generator Series Impedance Equal ZRL.
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SPICE INPUT FILE L303X SLIC SIMULATION L303X MONOCHIP SLIC ANALYSIS CIRCUIT CONFIGURATION PROT RESISTOR 2x40ohm RP1=RP2=40ohm RS=4Kohm FEEDING RESISTANCE 400ohm RDC=3.2Kohm RETURN LOSS IMPEDANCE 600ohm ZAC=26Kohm TRANS HYBRID LOSS IMPEDANCE 600ohm RA=4Kohm, ZA=26Kohm, ZB=30Kohm (SAME CONFIGURATION L3036 TEST CIRCUIT) ************ SLIC EXTERNAL COMPONENTS (SHOULD MATCH WITH APPLICATION )*********** 3.2K RTTX 6.34K 1MEG RITTX 10MEG RIRX 10MEG RIZB 10MEG 4.7U CCOMP 220P 220P CTTX 5.6N 100N ******** ******** RSAC RPAC *CPAC 4.4N *********************** ********* ********* *CAP 4.4N *********************** ********* *********
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*CBP 4.4N **** RETURN LOSS IMPEDANCE ****** .SUBCKT RSRL RPRL *CPRL 220N .ENDS ********** IMPEDANCE ************** .SUBCKT ZTHL RSTHL RPTHL *CPTHL 220N .ENDS ********** LINE IMPEDANCE ******* .SUBCKT ZTTX RSTTX *RPTTX CPTTX 120N .ENDS
SLIC EXTERNAL COMPONENTS
*************************** MODEL COMPONENTS (SHOULD MODIFIED) ************************* 2.325 -10MEG -14.13
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.005 .005 *.AC .WIDTH IN=80 OUT=80 MODEL COMPONENTS
******* INSERT ONLY FOLLOWING BLOCKS DEPENDING *********** ******* CHARACTERISTIC REGION *********** ******** LIMITING CURRENT REGION ******************* 1MEG ******** LIMITING REGION ******** *************** ************* CONST VOLTAGE REGION ***************** ************* CONST VOLTAGE REGION ************* **** RESISTIVE FEED REGION (NOT ALWAYS PRESENT) **** *E10 *********** RESISTIVE FEED REGION ************** ******* INSERT ONLY FOLLOWING BLOCKS DEPENDING *************** ******* WHICH ANALYSIS WANT *************** ******* GAIN EVALUATION VTX/VL WITH VRX=0 ******************** VTTX .PRINT VDB(220) VP(220) .PLOT VDB(220) VP(220) .PROBE V(220) ******* GAIN ******* GAIN EVALUATION 2VTX/VSOL WITH VRX=0 ***************** *VRX
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*VTTX *VSO *XZRL *.AC *.PRINT VDB(220) VP(220) *.PLOT VDB(220) VP(220) *.PROBE V(220) ******** GAIN ******** GAIN EVALUATION VL/VRX ******************************* *VTTX *XZRL *VRX *.AC *.PRINT VDB(230,240) VP(230,240) *.PLOT VDB(230,240) VP(230,240) *.PROBE V(230,240) ******** GAIN ******** EVALUATION VTX/VRX *VTTX *XZTHL ZTHL *VRX *.AC *.PRINT VDB(220) VP(220) *.PLOT VDB(220) VP(220) *.PROBE V(220) ******** EVALUATION ******** RETURN LOSS EVALUATION *VTTX *VRX *XZRL *RR1 *RR2 *VIRL *.AC *.PRINT VDB(230,233) *.PLOT VDB(230,233) *.PROBE V(230,233) ******** RETURN LOSS EVALUATION ******** INPUT IMPEDANCE EVALUATION LINE TERMINALS *********** *VTTX *VRX
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*.AC *.PRINT VM(230,240) VP(230,240) *.PLOT VM(230,240) VP(230,240) *.PROBE V(230,240) ******** INPUT IMPEDANCE EVALUATION ************************** ******** GAIN EVALUATION VL/VTTXIN ******************************* *VRX *XZTTX ZTTX *VTTXIN *.AC *.PRINT VM(230,240) VP(230,240) *.PLOT VM(230,240) VP(230,240) *.PROBE V(230,240) ******** GAIN ******** CANCELLATION VTX/VTTXIN ***************************** *VRX *XZTTX ZTTX *VTTXIN *.AC *.PRINT VM(220) VP(220) *.PLOT VM(220) VP(220) *.PROBE V(220) ******** CANCELLATION .END
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Information furnished believed accurate reliable. However, SGS-THOMSON Microelectronics assumes responsibility consequences such information infringement patents other rights third parties which result from use. license granted implication otherwise under patent patent rights SGS-THOMSON Microelectronics. Specifications mentioned this publication subject change without notice. This publication supersedes replaces information previously supplied. SGS-THOMSON Microelectronics products authorized critical components life support devices systems without express written approval SGS-THOMSON Microelectronics. 1995 SGS-THOMSON Microelectronics Rights Reserved SGS-THOMSON Microelectronics GROUP COMPANIES Australia Brazil France Germany Hong Kong Italy Japan Korea Malaysia Malta Morocco Netherlands Singapore Spain Sweden Switzerland Taiwan Thaliand United Kingdom U.S.A.
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