Order this document MC10LVSX1125/D 622Mb/s Fiber Optic Post Ampli

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622Mb/s Fiber Optic Post Amplifier
LVSX1125 integrated voltage limiting amplifier high frequency fiber optic applications. device interfaces directly trans-impedance amplifier typical optical electrical conversion portion fiber optic link. With data rate capabilities 622Mb/s range, high gain limiting amplification LVSX1125 ideal high speed fiber optic applications like SONET/SDM, ATM, FDDI, Fibre Channel Serial Hippi. device functionally compatible Philips SA5225 with significantly higher bandwidth lower voltage. CAZP CAZN inputs limiting amplifier provide auto-zero function effectively cancel input offset voltage present amplifier. LVSX1125 incorporates programmable level detect function identify when input signal been lost. This information back Disable input device maintain stability under loss signal conditions. Using Vset sensitivity level detect adjusted. input used filter level detect input that random noise spikes filtered out. MC10LVSX1125 compatible with MECL10H logic levels.
MC10LVSX1125
FIBER OPTIC POST AMPLIFIER
SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05
Wideband Operation: 20kHz 550MHz Programmable Input Signal Level Detection Operation with single +3.3V standard supply Standard 16-lead SOIC Package Fully Differential Design Minimize Noise Affects 10KH Compatible BLOCK DIAGRAM
CAZP CAZN
Limiting Amplifier Buffer
Dout Dout Vset Vref VCCE Dout Dout GNDE
Pinout: 16-Lead Plastic Package (Top View)
Disable Vref Reference Disable
Level Detect Buffer
CAZN CAZP GNDA
VCCA Disable
Vset
This document contains information product under development. Motorola reserves right change discontinue this product without notice. 08/1999
Motorola, Inc. 1999
MC10LVSX1125
FUNCTION TABLE
CAZN CAZP GNDA Din, VCCA Disable Function Auto-zero capacitor pin. capacitor between this CAZP cancels offset inherent limiting amplifier. Auto-zero capacitor pin. capacitor between this CAZN cancels offset inherent limiting amplifier. Analog ground pin. Ground PECL operation -3.3V standard operation. GNDA GNDE must same potential. Differential data input. Analog power supply pin. +3.3V PECL operation ground standard operation. VCCA VCCE must same potential. Filter capacitor level detect comparator. Capacitor should connected VCCA. When asserted LOW, left open pulled input pulldown resistor, output buffer will enabled will respond input stimulus input. Forcing Disable HIGH will force Dout output complimentary output HIGH. Loss signal. This output will HIGH when input signal falls below (Vset/100) mVP-P. Digital ground pin. Ground PECL operation -3.3V standard operation. GNDA GNDE must same potential. Differential data outputs. Digital power supply pin. +3.3V PECL operation ground standard operation. VCCA VCCE must same potential. Reference voltage threshold level voltage division network. Input threshold level detect setting input. Input generated from voltage divider between Vref GNDA.
GNDE Dout, Dout VCCE Vref Vset
DATA Cbypass
CAZN CAZP GNDA VCCA Disable
Vset Vref VCCE Dout Dout GNDE LEVEL DETECT DATA
Cbypass
Figure Typical Operating Circuit
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MC10LVSX1125
Coupling Capacitors LVSX1125 inputs must coupled allow proper operation offset correction function. coupling capacitors, Cin, must large enough pass lowest input frequency interest. where Input Signal Level Detector LVSX1125 allows user programmable input signal level-detection automatically disable switching data output input level below threshold. This prevents outputs from reacting noise absence valid input signal, ensures that data will only transmitted when signal-to-noise ratio sufficient bit-error-rate system operation. Complimentary flags (LOS LOSB) indicate whether input signal above below desired threshold level. level detect system, input signal amplified rectified before being compared programmable reference. filter included prevent noise spikes from triggering level-detector. filter nominal time constant, additional filtering achieved using external capacitor (CLD) from VCCA (the internal driving impedance nominally 28k). formula calculation capacitor where
(Rin1) (flow)
input resistance 5000 flow lowest frequency.
Auto-zero Capacitors feedback amplifier used cancel offset voltage forward signal path, input internal comparator toggle point absence input signal. time constant cancelling circuitry external capacitor (CAZ) connected between Pins formula calculation auto-zero capacitor where (RAZ) (flow) internal driving impedance 290k flow lowest frequency.
internal driving impedance filter time constant.
CHARACTERISTICS (GNDA GNDE Ground; VCCA VCCE 4.5V 5.5V)
Symbol VHYS Characteristic Input Signal Voltage (Din) Input Offset Voltage Input Noise Input Level Detect Programmability Level Detect Hysteresis Input HIGH Current Disable Power Supply Current Single-Ended 0.008 Unit VP-P mVP-P Note Condition Note
This device functions with Vinmin 6mVP-P, with increased (See data). This device anomoly VHYS when 0.65 VSET 0.75V. Operation this region recommended. (See Figure
(mVpp) Input detect level (LOS (dB)
Vset
Vset
Figure versus Vset 25°C)
Figure Hysteresis 25°C)
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MC10LVSX1125
CHARACTERISTICS1
-40°C Symbol Characteristic Output HIGH Voltage -4.5 -5.5V 5.0V2 Output Voltage -4.5 -5.5V 5.0V2 Input HIGH Voltage3 -4.5 -5.5V 5.0V2 Input Voltage3 -4.5 -5.5V 5.0V2 Input Current3 1080 3920 -1950 3050 -1230 3770 -1950 3050 -890 4110 -1650 3350 -890 4110 -1500 3500 1020 3980 -1950 3050 -1170 3830 -1950 3050 -840 4160 -1630 3370 -840 4160 -1480 3520 -980 4020 -1950 3050 -1130 3870 -1950 3050 25°C -810 4190 -1630 3370 -810 4190 -1480 3520 -910 4090 -1950 3050 -1060 3940 -1950 3050 85°C -720 4280 -1595 3405 -720 4280 -1445 3555 Unit
10SX circuits designed meet specifications shown table after thermal equilibrium been established. circuit test socket mounted printed circuit board transverse airflow greater than 500lfpm maintained. Outputs terminated through resistor -2.0 volts except where otherwise specified individual data sheets. Limits hold 5.0V only. Parametric values will vary with variation VCC. Parametric values Disable input only.
CHARACTERISTICS (VCCA VCCE 4.5V 5.5V)
Symbol BWmin BWmax tPWD tjitter Characteristic Lower -3dB Bandwidth Upper -3dB Bandwidth Pulse Width Distortion Rise/Fall Times Auto-Zero Output Resistance Level Detect Filter Resistance Level Detect Time Constant Total Jitter Unit Condition
(Bit-Error-Rate) Using 622Mb/s SONET STS-12 pattern, LVSX1125 shows following typical BERs 25°C:
Input 4E-13 <1E-14 <5E-15
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MC10LVSX1125
OUTLINE DIMENSIONS
SUFFIX PLASTIC SOIC PACKAGE CASE 751B-05 -ANOTES: DIMENSIONING TOLERANCING ANSI Y14.5M, 1982. CONTROLLING DIMENSION: MILLIMETER. DIMENSION INCLUDE MOLD PROTRUSION. MAXIMUM MOLD PROTRUSION 0.15 (0.006) SIDE. DIMENSION DOES INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL 0.127 (0.005) TOTAL EXCESS DIMENSION MAXIMUM MATERIAL CONDITION.
0.25 (0.010)
MILLIMETERS 9.80 10.00 4.00 3.80 1.75 1.35 0.49 0.35 1.25 0.40 1.27 0.25 0.19 0.25 0.10 6.20 5.80 0.50 0.25 INCHES 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 0.008 0.009 0.004 0.009 0.229 0.244 0.010 0.019
-TSEATING PLANE
0.25 (0.010)
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MC10LVSX1125
NOTES
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MC10LVSX1125
NOTES
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MC10LVSX1125
Motorola reserves right make changes without further notice products herein. Motorola makes warranty, representation guarantee regarding suitability products particular purpose, does Motorola assume liability arising application product circuit, specifically disclaims liability, including without limitation consequential incidental damages. "Typical" parameters which provided Motorola data sheets and/or specifications vary different applications actual performance vary over time. operating parameters, including "Typicals" must validated each customer application customer's technical experts. Motorola does convey license under patent rights rights others. Motorola products designed, intended, authorized components systems intended surgical implant into body, other applications intended support sustain life, other application which failure Motorola product could create situation where personal injury death occur. Should Buyer purchase Motorola products such unintended unauthorized application, Buyer shall indemnify hold Motorola officers, employees, subsidiaries, affiliates, distributors harmless against claims, costs, damages, expenses, reasonable attorney fees arising directly indirectly, claim personal injury death associated with such unintended unauthorized use, even such claim alleges that Motorola negligent regarding design manufacture part. Motorola registered trademarks Motorola, Inc. Motorola, Inc. Equal Opportunity/Affirmative Action Employer. Mfax trademark Motorola, Inc. reach EUROPE Locations Listed: Motorola Literature Distribution; P.O. 5405, Denver, Colorado 80217. 1-303-675-2140 1-800-441-2447 Customer Focus Center: 1-800-521-6274 MfaxTM: RMFAX0@email.sps.mot.com TOUCHTONE 1-602-244-6609 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, Motorola Back System Canada ONLY 1-800-774-1848 King Street, Industrial Estate, N.T., Hong Kong. http://sps.motorola.com/mfax/ 852-26668334 HOME PAGE: http://motorola.com/sps/ JAPAN: Motorola Japan Ltd.; SPD, Strategic Planning Office, 141, 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan. 81-3-5487-8488
MOTOROLA
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