19-3265; Rev 0; 5/04 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers The MAX9483/MAX9484 high-performance, multimode, laser-diode drivers (LDDs) are designed for CD and DVD combination pickup heads. The drivers consist of three input channels, an RF oscillator, and two precision current-amplifier outputs to drive the CD and DVD laser diodes. The MAX9483/MAX9484 support multiple 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. External resistors set the oscillation frequency and output swing. The MAX9484 features an extra resistor input allowing the oscillation frequencies of the two outputs to be set separately. Additionally, the MAX9484 allows the writing control signals to be received in lowvoltage differential signal (LVDS) mode or single-ended mode to provide reliable high-speed writing. The MAX9483 is offered in 16-pin QSOP and 4mm x 4mm 16-pin thin QFN packages. The MAX9484 is offered in a 4mm x 4mm 20-pin thin QFN package. Both devices are specified for 4.5V to 5.5V supply and 0°C to +70°C temperature range. Applications Laser Diode Driver for CD-RW and DVD Combos: CD-R/RW, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-RAM Features ♦ Dual Output Ports with Three Controlled-Current Channels ♦ Support Various Laser-Diode Driver Standards CD-R/RW, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-RAM, and DVD Video ♦ MAX9483 is Pin and Function Compatible with ATMEL T0806 ♦ Independent Frequency Setting for the Two Output Ports (MAX9484) ♦ Accepts Differential (LVDS) or Single-Ended Inputs for Writing Data (MAX9484) ♦ Enable Control ♦ High-Current Swing Up to 270mA for the Reading Current ♦ High 400mA Total Peak Writing Current ♦ Adjustable Modulation Frequency from 100MHz to 600MHz ♦ Fast Output-Current Pulse Rise and Fall Time 1.0ns (typ) ♦ 4.5V to 5.5V Single-Supply Voltage ♦ No External Reference Clock Required ♦ 0°C to +70°C Commercial Temperature Range DVD Video Recorders High-Power and High-Speed Laser-Writable Device Drivers Pin Configurations Ordering Information PART TOP VIEW IN1 1 16 VCC IN2 2 15 OUT1 IN3 3 RF 4 14 GND MAX9483 13 RS1 NE2 5 12 RS2 NE3 6 11 OUT2 ENABLE 7 10 OUTSEL ENOSC 8 9 TEMP RANGE PIN-PACKAGE MAX9483CEE 0°C to +70°C 16 QSOP MAX9483CTE* 0°C to +70°C 16 Thin QFN MAX9484CTP 0°C to +70°C 20 Thin QFN *Future product—contact factory for availability. VCC QSOP Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX9483/MAX9484 General Description MAX9483/MAX9484 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers ABSOLUTE MAXIMUM RATINGS VCC, VCCO_ to GND ..............................................-0.3V to +6.0V IN_, 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) ........................667mW TQFN (derate 16.9mW/°C above +70°C).....................1349mW Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C ESD Rating (Human Body Model) .................................≥ ±2.0kV Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute 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, 4) PARAMETER SYMBOL CONDITIONS MIN TYP MAX MAX9483 181 200 MAX9484 182 210 MAX9483 91 100 MAX9484 92 105 UNITS POWER SUPPLY Write-Mode Supply Current Read-Mode Supply Current ICC1 ICC2 IIN1 = IIN2 = IIN3 = 500µA, NE2 = NE3 = low Oscillator enabled, IIN1 = IIN2 = IIN3 = 500µA, ENOSC = high, RS = 8.2kΩ, RF = 6.8kΩ Oscillator disabled, IIN1 = IIN2 = IIN3 = 500µA MAX9483 82 95 MAX9484 83 95 MAX9483 14 20 MAX9484 14 20 MAX9483 0.96 2.0 MAX9484 1.2 2.0 Supply Current ICC3 Input disabled, IIN1 = IIN2 = IIN3 = 0 Power-Down Supply Current ICC4 ENABLE = NE2 = NE3 = low, IIN1 = IIN2 = IIN3 = 0 mA mA mA mA DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2, NE3) (MAX9483) High-Level Input Voltage VIH1 Low-Level Input Voltage VIL1 Input Current IIN1 2.0 VIN = high or low V -20 0.8 V +20 µA 50 mV LVDS DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2_, NE3_) (MAX9484) Differential Input High Threshold VTH Differential Input Low Threshold VTL -50 mV SINGLE-ENDED DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2+, NE3+) (MAX9484) Reference Voltage VREF 1.10 High-Level Input Voltage VIH2 VREF + 300 Low-Level Input Voltage VIL2 Input Current IIN2 2 VIN = high or low 1.25 -20 _______________________________________________________________________________________ 1.40 V mV VREF 300 mV +20 µA Dual-Output, Multimode CD-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) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.8 V -10 +10 µA 0 4.0 mA 235 Ω DIGITAL INPUTS FOR CONTROL SIGNALS (ENABLE, OUTSEL, ENOSC) High-Level Input Voltage VIH3 Low-Level Input Voltage VIL3 2.0 Input Current IIN3 VIN = high or low Current Channel Input Current Range ICIN Current flowing into IN1, IN2, or IN3 Current Channel Input Impedance RIN IN_ to GND V ANALOG INPUTS (IN1, IN2, IN3) 165 200 OUTPUTS (OUT1 and OUT2) Maximum Total Output Current Maximum Output Current per Channel IOUT IOUT 320 400 Read current IN1 210 273 Write current IN2, IN3 250 347 Best-Fit Current Gain AI Any channel (Note 3) Best-Fit Current Offset IOFFSET Any channel (Note 3) -4 Any channel (Note 3) -3 Output Current Linearity Output Off Current mA mA 100 I/I +4 mA +3 % IOFF1 ENABLE = low 0.2 1 IOFF2 NE2 = NE3 = high, IIN1 = 0µA, IIN2 = IIN3 = 500µA 0.22 1.5 IOFF3 NE2 = NE3 = low, IIN1 = IIN2 = IIN3 = 0µA 0.14 5 mA Read-Mode Output Supply Sensitivity IOUT = 40mA -2 +2 %/V Write-Mode Output Supply Sensitivity IOUT = 80mA -2 +2 %/V Read-Mode Output Temperature Sensitivity IOUT = 40mA 15 ppm°C Write-Mode Output Temperature Sensitivity IOUT = 80mA 16 ppm°C Output Noise IOUT = 40mA, ENOSC = low 3 nA/√Hz _______________________________________________________________________________________ 3 MAX9483/MAX9484 DC ELECTRICAL CHARACTERISTICS (continued) MAX9483/MAX9484 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers AC 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, 4) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 255 300 350 MHz OSCILLATOR Oscillator Frequency fOSC Oscillator Temperature Coefficient RF_ = 7.5kΩ (Note 2), IOUT = 40mA (read) RF_ = 7.5kΩ 10 ppm/°C tr IOUT = 40mA (read) + 40mA (10% to 90%) 0.9 1.6 ns tf IOUT = 40mA (read) + 40mA (90% to 10%) 1.0 1.6 ns OUTPUT TIMING Write Rise Time Write Fall Time Output-Current Overshoot OCO 5 % Output ON Propagation Delay tON NE 50% high-low to IOUT at 50% of final value 1.0 2.0 ns Output OFF Propagation Delay tOFF NE 50% low-high to IOUT at 50% of final value 1.0 2.0 ns Output Disable Time tDIS ENABLE 50% high-low to IOUT at 50% of final value at IOUT = 40mA (read) 60 100 ns Output Enable Time tEN ENABLE 50% low-high to IOUT at 50% of final value at IOUT = 40mA (read) 60 100 ns Oscillator Disable Time tDISO ENOSC 50% high-low to IOUT at 50% of final value at IOUT = 40mA (read) 4 10 ns Oscillator Enable Time tEHO ENOSC 50% high-low to IOUT at 50% of final value at IOUT = 40mA (read) 25 50 ns tODH OUTSEL 50% low-high to IOUT at 50% of final value measured at OUT1 2.9 10 tODL OUTSEL 50% high-low to IOUT at 50% of final value measured at OUT2 2.9 10 ns Channel-Select Delay Note 1: Current into a pin is defined as positive. Current out of a pin is defined as negative. All voltages are referenced to ground except VTH. Note 2: Maximum and minimum limits over temperature are guaranteed by design and characterization. Devices are production tested 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, Multimode CD-RW/DVD Laser-Diode Drivers OSCILLATOR PEAK-TO-PEAK SWING vs. FREQUENCY OSCILLATOR PEAK-TO-PEAK SWING vs. RESISTOR RS 600 100 MAX9483 toc02 80 MAX9483 toc01 700 70 90 80 300 70 SWING (mAP-P) SWING (mAP-P) 400 50 40 30 60 50 40 30 20 20 10 100 10 0 0 5 6 7 8 9 10 11 12 3 4 RF (kΩ) 5 6 7 8 9 200 250 300 350 400 450 500 550 600 10 FREQUENCY (MHz) RS (kΩ) OSCILLATOR FREQUENCY vs. TEMPERATURE OUTPUT CHANNEL CURRENT vs. INPUT CURRENT (IIN1 = IIN2 = IIN3) 450 MAX9483 toc04 320 315 VCC = 5.25V VCC = 5.0V 400 350 310 300 IOUT (mA) 305 300 295 VCC = 4.75V 250 200 150 290 100 285 50 280 0 0 10 20 30 40 50 60 0 70 300 600 900 1200 TEMPERATURE (°C) IIN_ (µA) OUTPUT VOLTAGE COMPLIANCE 50mA +50mA PULSE (10ns) 1500 MAX9483 toc07 350 MAX9483 toc06 4 FREQUENCY (MHz) 3 MAX9483 toc05 200 300 250 IOUT (mA) FREQUENCY (MHz) 60 500 MAX9483 toc03 OSCILLATOR FREQUENCY vs. RESISTOR RF 200 150 100 50 0 0 1 2 3 4 5 TIME (5ns/div) VCC - VOUT (V) _______________________________________________________________________________________ 5 MAX9483/MAX9484 Typical Operating Characteristics (VCC = VCCO_ = +5V, TA = +25°C, unless otherwise noted.) MAX9483/MAX9484 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers Pin Description PIN MAX9483 MAX9484 NAME FUNCTION QSOP TQFN TQFN 1 15 18 IN1 Channel 1 Input Current (Read Channel) 2 16 19 IN2 Channel 2 Input Current (Write Channel) 3 1 20 IN3 Channel 3 Input Current (Write Channel) 4 2 — RF Oscillator Frequency-Setting Resistor. Connect an external resistor to GND to set the frequency of the oscillator for both outputs OUT1 and OUT2. 5 3 — NE2 Channel 2 Active-Low Digital Control Input 6 4 — NE3 Channel 3 Active-Low Digital Control Input 7 5 8 ENABLE LVTTL Output-Current Enable 8 6 9 ENOSC LVTTL Oscillator Enable 9, 16 14 17 VCC 10 8 11 OUTSEL 11 9 12 OUT2 12 10 13 RS2 Output 2 Oscillator Current Swing-Setting Resistor. Connect an external resistor to GND to set the swing current of output port 2. 13 11 14 RS1 Output 1 Oscillator Current Swing-Setting Resistor. Connect an external resistor to GND to set the swing current of output port 1. 6 +5V Power Supply. Bypass to GND with 0.1µF and 0.01µF capacitors with the 0.01µF capacitor as close to the pin as possible. LVTTL Output Select. Drive high to select output 1; pull low to select output 2. Output Current 2 14 — — GND Ground 15 12 15 OUT1 Output Current 1 — — 1 RF1 Output 1 Oscillator Frequency-Setting Resistor. Connect an external resistor to GND to set the frequency of the oscillator for OUT1. — — 2 RF2 Output 2 Oscillator Frequency-Setting Resistor. Connect an external resistor to GND to set the frequency of the oscillator for OUT2. — — 3 NE2+ Noninverting Channel 2 LVDS or Single-Ended Digital Control Input — — 4 NE2- Inverting Channel 2 LVDS or Reference for Single-Ended Digital Control Input — — 6 NE3+ Noninverting Channel 3 LVDS or Single-Ended Control Digital Input — — 7 NE3- Inverting Channel 3 LVDS or Reference for Single-Ended Control Digital Input — 7 10 VCCO2 +5V Power Supply for Output 2. Bypass to GND with 0.1µF and 0.01µF capacitors with the 0.01µF capacitor as close to pin as possible. — 13 16 VCCO1 +5V Power Supply for Output 2. Bypass to GND with 0.1µF and 0.01µF capacitors with the 0.01µF capacitor as close to the pin as possible. — — 5 REF — EP EP EP Reference Voltage for Single-Ended Input. Connect a 0.1µF decoupling capacitor to ground. Exposed Pad. Connect to ground. _______________________________________________________________________________________ Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers MAX9483/MAX9484 H ENABLE L H NE2 L H NE3 L tON tOFF tOFF tON IOUT tDIS tEN tr tr tf tf TIME Figure 1. Timing Diagram of Output vs. Control Signals Detailed Description Read Channel and Write Channels The MAX9483/MAX9484 high-performance multimode LDDs 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, which provides the read current or the offset current to the lasers. The other two channels are the write channels. The currents of these two channels are superimposed on the read current that serves as the offset current for the laser in write mode. The offset current significantly reduces the laser output ramp-up time. When ENABLE is low, all three channels are disabled. Driving ENABLE high enables the read channel and leaves the other two write channels to be controlled by NE2 and NE3 (see Figure 1). By selecting the input currents at IN2 and IN3, as well as the signal timing of NE2 and NE3, the drivers can generate various current waveforms for different CD/DVD writing standards. All three channels have a current gain of 100. The maximum total current each output can provide is 400mA. RF Oscillator To reduce the laser-mode hopping noise in read mode, modulate the read current with an oscillator with a 100MHz to 600MHz frequency. An external resistor, RF, determines the oscillator frequency selection. For the MAX9484, two external resistors, R F1 and R F2 , are used to select the oscillator frequency for CD and DVD lasers separately. The swing amplitude of the oscillator current is set by two external resistors, RS1 and RS2, one for CD and one for DVD. The oscillator is enabled when both ENABLE and ENOSC are driven high. _______________________________________________________________________________________ 7 MAX9483/MAX9484 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers Applications Information LVDS Inputs for MAX9484 The MAX9484 input control signals, NE2_ and NE3_, are compatible with LVDS or single-ended inputs. The LVDS inputs allow the driver to handle higher data writing rates. When using single-ended input signals, such as LVTTL or SSTL_2, connect NE2- and NE3- to REF. CONTROL CHANNEL 3 IN3 Laser Safety and IEC 825 Using the MAX9483/MAX9484 laser drivers alone does not ensure that a transmitter design is compliant with IEC 825. The entire transmitter circuit and component selections must be considered. Customers must determine the 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 applications intended to support or sustain life, or for any other application where the failure of a Maxim product could create a situation where personal injury or death may occur. CONTROL CHANNEL 3 IN3 MAX9483 OUT1 ENABLE MAX9484 OUT1 ENABLE NE3+ NE3- NE3 CONTROL CHANNEL 2 OUT2 CONTROL CHANNEL 2 OUT2 IN2 IN2 ENABLE NE2+ ENABLE NE2- NE2 READ CHANNEL READ CHANNEL IN1 IN1 ENABLE ENABLE ENABLE ENABLE REF RF RS1 RS2 Figure 2. MAX9483 Functional Diagram 8 RF OSCILLATOR ENOSC RF OSCILLATOR ENOSC OUTSEL VOLTAGE REFERENCE RF1 RF2 RS1 RS2 Figure 3. MAX9484 Functional Diagram _______________________________________________________________________________________ OUTSEL Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers MAX9483/MAX9484 +5V CORE LOGIC SUPPLY VCC VCC IN1 RS1 IN2 RS1 IN3 +5V OUTPUT SUPPLY OUT1 RF RS2 RF RS2 LD1 NE2 MAX9483 NE3 OUT2 ENOSC SINGLEENDED INPUTS ENABLE CONTROL SIGNALS AND CURRENT INPUTS OUTSEL LD2 Figure 4. MAX9483 Typical Operating Circuit _______________________________________________________________________________________ 9 MAX9483/MAX9484 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers +5V CORE LOGIC SUPPLY RF2 VCCO1 VCC IN1 RF1 IN2 RF1 IN3 +5V OUTPUT1 SUPPLY OUT1 RS1 RF1 RS1 NE2+ RS2 RS2 MAX9484 100Ω 100Ω OUTSEL LD2 VCCO2 ENOSC REF LVDS INPUTS NE3- NE2- ENABLE OUT2 NE3+ CONTROL SIGNALS AND CURRENT INPUTS LD1 +5V OUTPUT2 SUPPLY Figure 5. MAX9484 Typical Operating Circuit with LVDS Inputs 10 ______________________________________________________________________________________ Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers MAX9483/MAX9484 +5V CORE LOGIC SUPPLY RF2 VCCO1 VCC IN1 RF1 IN2 RF1 IN3 +5V OUTPUT1 SUPPLY OUT1 RS1 RF2 RS1 NE2+ RS2 RS2 MAX9484 OUTSEL LD2 VCCO2 REF ENOSC NE2NE3- SINGLEENDED INPUTS ENABLE OUT2 NE3+ CONTROL SIGNALS AND CURRENT INPUTS LD1 +5V OUTPUT2 SUPPLY Figure 6. MAX9484 Typical Operation Circuit with Single-Ended Inputs ______________________________________________________________________________________ 11 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers IN1 VCC VCCO1 18 17 16 MAX9484 3 10 7 NE3- VCCO2 6 NE3+ TQFN 9 5 8 4 REF OUT2 ENOSC NE2- EXPOSED PAD (GROUND) ENABLE VCCO1 13 IN2 VCC 14 9 NE2+ 19 IN1 RS2 IN3 IN2 15 10 2 8 4 EXPOSED PAD (GROUND) RF2 OUTSEL NE3 RS1 7 3 11 1 VCCO2 NE2 MAX9483 RF1 6 2 OUT1 ENOSC RF 12 5 1 ENABLE IN3 16 TOP VIEW 20 MAX9483/MAX9484 Pin Configurations (continued) 15 OUT1 14 RS1 13 RS2 12 OUT2 11 OUTSEL TQFN Chip Information TRANSISTOR COUNT: 1399 12 ______________________________________________________________________________________ Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers 24L QFN THIN.EPS PACKAGE OUTLINE 12, 16, 20, 24L THIN QFN, 4x4x0.8mm 21-0139 C 1 ______________________________________________________________________________________ 2 13 MAX9483/MAX9484 Package 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/MAX9484 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers Package 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 OUTLINE 12, 16, 20, 24L THIN QFN, 4x4x0.8mm 21-0139 14 ______________________________________________________________________________________ C 2 2 Dual-Output, Multimode CD-RW/DVD Laser-Diode Drivers QSOP.EPS PACKAGE OUTLINE, QSOP .150", .025" LEAD PITCH 21-0055 E 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. 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 Products Printed USA is a registered trademark of Maxim Integrated Products. MAX9483/MAX9484 Package 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.)