Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers

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19-3265; Rev 0; 5/04Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversThe MAX9483/MAX9484 high-performance, multimode,laser-diode drivers (LDDs) are designed for CD andDVD combination pickup heads. The drivers consist ofthree input channels, an RF oscillator, and two precision current-amplifier outputs to drive the CD and DVDlaser diodes. The MAX9483/MAX9484 support multipleCD and DVD read/write standards, such as CD-R/RW,DVD-R, DVD R, DVD-RW, DVD RW, and DVD-RAM bychoosing the writing control signals and input currentson these input channels. The peak total output currentis 400mA with a current gain of 100 at each channel.External resistors set the oscillation frequency and output swing. The MAX9484 features an extra resistorinput allowing the oscillation frequencies of the two outputs to be set separately. Additionally, the MAX9484allows the writing control signals to be received in lowvoltage differential signal (LVDS) mode or single-endedmode to provide reliable high-speed writing.The MAX9483 is offered in 16-pin QSOP and 4mm x 4mm16-pin thin QFN packages. The MAX9484 is offered in a4mm x 4mm 20-pin thin QFN package. Both devices arespecified for 4.5V to 5.5V supply and 0 C to 70 C temperature range.ApplicationsLaser Diode Driver for CD-RW and DVDCombos: CD-R/RW, DVD-R, DVD R, DVD-RW,DVD RW, DVD-RAMFeatures Dual Output Ports with Three Controlled-CurrentChannels Support Various Laser-Diode Driver StandardsCD-R/RW, DVD-R, DVD R, DVD-RW, DVD RW,DVD-RAM, and DVD Video MAX9483 is Pin and Function Compatiblewith ATMEL T0806 Independent Frequency Setting for theTwo Output Ports (MAX9484) Accepts Differential (LVDS) or Single-EndedInputs for Writing Data (MAX9484) Enable Control High-Current Swing Up to 270mA for the ReadingCurrent High 400mA Total Peak Writing Current Adjustable Modulation Frequency from 100MHzto 600MHz Fast Output-Current Pulse Rise and Fall Time1.0ns (typ) 4.5V to 5.5V Single-Supply Voltage No External Reference Clock Required 0 C to 70 C Commercial Temperature RangeDVD Video RecordersHigh-Power and High-Speed Laser-WritableDevice DriversPin ConfigurationsOrdering InformationPARTTOP VIEWIN1 116 VCCIN2 215 OUT1IN3 3RF 414 GNDMAX948313 RS1NE2 512 RS2NE3 611 OUT2ENABLE 710 OUTSELENOSC 89TEMP RANGEPIN-PACKAGEMAX9483CEE0 C to 70 C16 QSOPMAX9483CTE*0 C to 70 C16 Thin QFNMAX9484CTP0 C to 70 C20 Thin QFN*Future product—contact factory for availability.VCCQSOPPin Configurations continued at end of data sheet.Maxim Integrated ProductsFor pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.1MAX9483/MAX9484General Description

MAX9483/MAX9484Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversABSOLUTE MAXIMUM RATINGSVCC, VCCO to GND .-0.3V to 6.0VIN , RF , RS to GND.-0.3V to (VCC 0.3V)ENABLE, ENOSC, NE2 , NE3 ,OUTSEL to GND.-0.3V to (VCC 0.3V)Output Voltage at OUT1, OUT2.-0.3V to (VCC - 1V)Continuous Power Dissipation (TA 70 C)QSOP (derate 8.3mW/ C above 70 C) .667mWTQFN (derate 16.9mW/ C above 70 C).1349mWJunction Temperature . 150 CStorage Temperature Range .-65 C to 150 CESD Rating (Human Body Model) . 2.0kVLead Temperature (soldering, 10s) . 300 CStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.DC ELECTRICAL CHARACTERISTICS(VCC VCCO 4.5V to 5.5V, RL 6.8Ω, ENABLE high, NE2 NE3 high (MAX9483), NE2 NE3 differential high(MAX9484), ENOSC low, TA 0 C to 70 C, unless otherwise noted. Typical values are at VCC VCCO 5V, TA 25 C.)(Notes 1, 2, AX9484182210MAX948391100MAX948492105UNITSPOWER SUPPLYWrite-Mode Supply CurrentRead-Mode Supply CurrentICC1ICC2IIN1 IIN2 IIN3 500µA,NE2 NE3 lowOscillator enabled,IIN1 IIN2 IIN3 500µA,ENOSC high, RS 8.2kΩ,RF 6.8kΩOscillator disabled,IIN1 IIN2 IIN3 MAX94830.962.0MAX94841.22.0Supply CurrentICC3Input disabled,IIN1 IIN2 IIN3 0Power-Down Supply CurrentICC4ENABLE NE2 NE3 low,IIN1 IIN2 IIN3 0mAmAmAmADIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2, NE3) (MAX9483)High-Level Input VoltageVIH1Low-Level Input VoltageVIL1Input CurrentIIN12.0VIN high or lowV-200.8V 20µA50mVLVDS DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2 , NE3 ) (MAX9484)Differential Input High ThresholdVTHDifferential Input Low ThresholdVTL-50mVSINGLE-ENDED DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2 , NE3 ) (MAX9484)Reference VoltageVREF1.10High-Level Input VoltageVIH2VREF 300Low-Level Input VoltageVIL2Input CurrentIIN22VIN high or low1.25-201.40VmVVREF 300mV 20µA

Dual-Output, MultimodeCD-RW/DVD Laser-Diode Drivers(VCC VCCO 4.5V to 5.5V, RL 6.8Ω, ENABLE high, NE2 NE3 high (MAX9483), NE2 NE3 differential high(MAX9484), ENOSC low, TA 0 C to 70 C, unless otherwise noted. Typical values are at VCC VCCO 5V, TA 25 C.)(Notes 1, 2, 4)PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS0.8V-10 10µA04.0mA235ΩDIGITAL INPUTS FOR CONTROL SIGNALS (ENABLE, OUTSEL, ENOSC)High-Level Input VoltageVIH3Low-Level Input VoltageVIL32.0Input CurrentIIN3VIN high or lowCurrent Channel Input CurrentRangeICINCurrent flowing into IN1, IN2, or IN3Current Channel InputImpedanceRININ to GNDVANALOG INPUTS (IN1, IN2, IN3)165200OUTPUTS (OUT1 and OUT2)Maximum Total Output CurrentMaximum Output Current perChannelIOUTIOUT320400Read current IN1210273Write current IN2, IN3250347Best-Fit Current GainAIAny channel (Note 3)Best-Fit Current OffsetIOFFSETAny channel (Note 3)-4Any channel (Note 3)-3Output Current LinearityOutput Off CurrentmAmA100I/I 4mA 3%IOFF1ENABLE low0.21IOFF2NE2 NE3 high, IIN1 0µA,IIN2 IIN3 500µA0.221.5IOFF3NE2 NE3 low, IIN1 IIN2 IIN3 0µA0.145mARead-Mode Output SupplySensitivityIOUT 40mA-2 2%/VWrite-Mode Output SupplySensitivityIOUT 80mA-2 2%/VRead-Mode Output TemperatureSensitivityIOUT 40mA15ppm CWrite-Mode Output TemperatureSensitivityIOUT 80mA16ppm COutput NoiseIOUT 40mA, ENOSC low3nA/ Hz3MAX9483/MAX9484DC ELECTRICAL CHARACTERISTICS (continued)

MAX9483/MAX9484Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversAC ELECTRICAL CHARACTERISTICS(VCC VCCO 4.5V to 5.5V, IOUT 40mA (read) 40mA, RL 6.8Ω, ENABLE high, NE2 NE3 high (MAX9483), NE2 NE3 differential high (MAX9484), ENOSC low, TA 0 C to 70 C, unless otherwise noted. Typical values are at VCC VCCO 5V, TA 25 C.) (Notes 1, MHzOSCILLATOROscillator FrequencyfOSCOscillator TemperatureCoefficientRF 7.5kΩ (Note 2), IOUT 40mA (read)RF 7.5kΩ10ppm/ CtrIOUT 40mA (read) 40mA (10% to 90%)0.91.6nstfIOUT 40mA (read) 40mA (90% to 10%)1.01.6nsOUTPUT TIMINGWrite Rise TimeWrite Fall TimeOutput-Current OvershootOCO5%Output ON Propagation DelaytONNE 50% high-low to IOUT at 50% of final value1.02.0nsOutput OFF Propagation DelaytOFFNE 50% low-high to IOUT at 50% of final value1.02.0nsOutput Disable TimetDISENABLE 50% high-low to IOUT at 50% of finalvalue at IOUT 40mA (read)60100nsOutput Enable TimetENENABLE 50% low-high to IOUT at 50% of finalvalue at IOUT 40mA (read)60100nsOscillator Disable TimetDISOENOSC 50% high-low to IOUT at 50% of finalvalue at IOUT 40mA (read)410nsOscillator Enable TimetEHOENOSC 50% high-low to IOUT at 50% of finalvalue at IOUT 40mA (read)2550nstODHOUTSEL 50% low-high to IOUT at 50% of finalvalue measured at OUT12.910tODLOUTSEL 50% high-low to IOUT at 50% of finalvalue measured at OUT22.910nsChannel-Select DelayNote 1: Current into a pin is defined as positive. Current out of a pin is defined as negative. All voltages are referenced to groundexcept VTH.Note 2: Maximum and minimum limits over temperature are guaranteed by design and characterization. Devices are productiontested at TA 25 C.Note 3: Linearity of the amplifier is calculated using a best-fit method at three operating points of IOUT at 20mA, 40mA, and 60mA.IOUT (IIN x GAIN) IOFFSET.Note 4: Guaranteed by design and characterization. Limit set at 6 sigma.4

Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversOSCILLATOR PEAK-TO-PEAK SWINGvs. FREQUENCYOSCILLATOR PEAK-TO-PEAK SWINGvs. RESISTOR RS600100MAX9483 toc0280MAX9483 toc0170070908030070SWING (mAP-P)SWING RF (kΩ)56789200 250 300 350 400 450 500 550 60010FREQUENCY (MHz)RS (kΩ)OSCILLATOR FREQUENCYvs. TEMPERATUREOUTPUT CHANNEL CURRENTvs. INPUT CURRENT (IIN1 IIN2 IIN3)450MAX9483 toc04320315VCC 5.25VVCC 5.0V400350310300IOUT (mA)305300295VCC 09001200TEMPERATURE ( C)IIN (µA)OUTPUT VOLTAGE COMPLIANCE50mA 50mA PULSE (10ns)1500MAX9483 toc07350MAX9483 toc064FREQUENCY (MHz)3MAX9483 toc05200300250IOUT (mA)FREQUENCY (MHz)60500MAX9483 toc03OSCILLATOR FREQUENCYvs. RESISTOR RF200150100500012345TIME (5ns/div)VCC - VOUT (V)5MAX9483/MAX9484Typical Operating Characteristics(VCC VCCO 5V, TA 25 C, unless otherwise noted.)

MAX9483/MAX9484Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversPin FN11518IN1Channel 1 Input Current (Read Channel)21619IN2Channel 2 Input Current (Write Channel)3120IN3Channel 3 Input Current (Write Channel)42—RFOscillator Frequency-Setting Resistor. Connect an external resistor to GND to set thefrequency of the oscillator for both outputs OUT1 and OUT2.53—NE2Channel 2 Active-Low Digital Control Input64—NE3Channel 3 Active-Low Digital Control Input758ENABLELVTTL Output-Current Enable869ENOSCLVTTL Oscillator Enable9, 161417VCC10811OUTSEL11912OUT2121013RS2Output 2 Oscillator Current Swing-Setting Resistor. Connect an external resistor to GNDto set the swing current of output port 2.131114RS1Output 1 Oscillator Current Swing-Setting Resistor. Connect an external resistor to GNDto set the swing current of output port 1.6 5V Power Supply. Bypass to GND with 0.1µF and 0.01µF capacitors with the 0.01µFcapacitor as close to the pin as possible.LVTTL Output Select. Drive high to select output 1; pull low to select output 2.Output Current 214——GNDGround151215OUT1Output Current 1——1RF1Output 1 Oscillator Frequency-Setting Resistor. Connect an external resistor to GND toset the frequency of the oscillator for OUT1.——2RF2Output 2 Oscillator Frequency-Setting Resistor. Connect an external resistor to GND toset the frequency of the oscillator for OUT2.——3NE2 Noninverting Channel 2 LVDS or Single-Ended Digital Control Input——4NE2-Inverting Channel 2 LVDS or Reference for Single-Ended Digital Control Input——6NE3 Noninverting Channel 3 LVDS or Single-Ended Control Digital Input——7NE3-Inverting Channel 3 LVDS or Reference for Single-Ended Control Digital Input—710VCCO2 5V Power Supply for Output 2. Bypass to GND with 0.1µF and 0.01µF capacitors withthe 0.01µF capacitor as close to pin as possible.—1316VCCO1 5V Power Supply for Output 2. Bypass to GND with 0.1µF and 0.01µF capacitors withthe 0.01µF capacitor as close to the pin as possible.——5REF—EPEPEPReference Voltage for Single-Ended Input. Connect a 0.1µF decoupling capacitor toground.Exposed Pad. Connect to ground.

Dual-Output, MultimodeCD-RW/DVD Laser-Diode FtONIOUTtDIStENtrtrtftfTIMEFigure 1. Timing Diagram of Output vs. Control SignalsDetailed DescriptionRead Channel and Write ChannelsThe MAX9483/MAX9484 high-performance multimodeLDDs are designed for CD and DVD combination pickup heads. The drivers have three current channels.Each channel has a current input IN ( 1, 2, or 3)and a channel control signal (ENABLE, NE2, or NE3).IN1 supplies the reference for the read channel, whichprovides the read current or the offset current to thelasers. The other two channels are the write channels.The currents of these two channels are superimposedon the read current that serves as the offset current forthe laser in write mode. The offset current significantlyreduces the laser output ramp-up time. When ENABLEis low, all three channels are disabled. Driving ENABLEhigh enables the read channel and leaves the other twowrite channels to be controlled by NE2 and NE3 (seeFigure 1). By selecting the input currents at IN2 andIN3, as well as the signal timing of NE2 and NE3, thedrivers can generate various current waveforms for different CD/DVD writing standards. All three channelshave a current gain of 100. The maximum total currenteach output can provide is 400mA.RF OscillatorTo reduce the laser-mode hopping noise in read mode,modulate the read current with an oscillator with a100MHz to 600MHz frequency. An external resistor, RF,determines the oscillator frequency selection. For theMAX9484, two external resistors, R F1 and R F2 , areused to select the oscillator frequency for CD and DVDlasers separately. The swing amplitude of the oscillatorcurrent is set by two external resistors, RS1 and RS2,one for CD and one for DVD. The oscillator is enabledwhen both ENABLE and ENOSC are driven high.7

MAX9483/MAX9484Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversApplications InformationLVDS Inputs for MAX9484The MAX9484 input control signals, NE2 and NE3 , arecompatible with LVDS or single-ended inputs. The LVDSinputs allow the driver to handle higher data writingrates. When using single-ended input signals, such asLVTTL or SSTL 2, connect NE2- and NE3- to REF.CONTROLCHANNEL 3IN3Laser Safety and IEC 825Using the MAX9483/MAX9484 laser drivers alone doesnot ensure that a transmitter design is compliant with IEC825. The entire transmitter circuit and component selections must be considered. Customers must determinethe level of fault tolerance required by their application.Note that Maxim products are not designed or authorized for use as components in systems intended for surgical implantation into the body, for applicationsintended to support or sustain life, or for any other application where the failure of a Maxim product could createa situation where personal injury or death may occur.CONTROLCHANNEL 3IN3MAX9483OUT1ENABLEMAX9484OUT1ENABLENE3 NE3-NE3CONTROLCHANNEL 2OUT2CONTROLCHANNEL 2OUT2IN2IN2ENABLENE2 BLEENABLEENABLEREFRFRS1RS2Figure 2. MAX9483 Functional Diagram8RF OSCILLATORENOSCRF OSCILLATORENOSCOUTSELVOLTAGEREFERENCERF1RF2RS1 RS2Figure 3. MAX9484 Functional DiagramOUTSEL

Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversMAX9483/MAX9484 5V CORE LOGICSUPPLYVCCVCCIN1RS1IN2RS1IN3 5V PUTSOUTSELLD2Figure 4. MAX9483 Typical Operating Circuit9

MAX9483/MAX9484Dual-Output, MultimodeCD-RW/DVD Laser-Diode Drivers 5V CORE LOGICSUPPLYRF2VCCO1VCCIN1RF1IN2RF1IN3 5V OUTPUT1SUPPLYOUT1RS1RF1RS1NE2 SINPUTSNE3-NE2-ENABLEOUT2NE3 CONTROLSIGNALSANDCURRENTINPUTSLD1 5VOUTPUT2SUPPLYFigure 5. MAX9484 Typical Operating Circuit with LVDS Inputs10

Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversMAX9483/MAX9484 5V CORE LOGICSUPPLYRF2VCCO1VCCIN1RF1IN2RF1IN3 5V OUTPUT1SUPPLYOUT1RS1RF2RS1NE2 DEDINPUTSENABLEOUT2NE3 CONTROLSIGNALSANDCURRENTINPUTSLD1 5VOUTPUT2SUPPLYFigure 6. MAX9484 Typical Operation Circuit with Single-Ended Inputs11

Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversIN1VCCVCCO1181716MAX94843107NE3-VCCO26NE3 TQFN9584REFOUT2ENOSCNE2-EXPOSED PAD(GROUND)ENABLEVCCO113IN2VCC149NE2 19IN1RS2IN3IN21510284EXPOSED 2OUT1ENOSCRF1251ENABLEIN316TOP VIEW20MAX9483/MAX9484Pin Configurations (continued)15OUT114RS113RS212OUT211OUTSELTQFNChip InformationTRANSISTOR COUNT: 139912

Dual-Output, MultimodeCD-RW/DVD Laser-Diode Drivers24L QFN THIN.EPSPACKAGE OUTLINE12, 16, 20, 24L THIN QFN, 4x4x0.8mm21-0139C1213MAX9483/MAX9484Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

MAX9483/MAX9484Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversPackage Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)PACKAGE OUTLINE12, 16, 20, 24L THIN QFN, 4x4x0.8mm21-013914C22

Dual-Output, MultimodeCD-RW/DVD Laser-Diode DriversQSOP.EPSPACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH21-0055E11Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 15 2004 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.MAX9483/MAX9484Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to www.maxim-ic.com/packages.)

CD and DVD read/write standards, such as CD-R/RW, DVD-R, DVD R, DVD-RW, DVD RW, and DVD-RAM by choosing the writing control signals and input currents on these input channels. The peak total output current is 400mA with a current gain of 100 at each channel.

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