19-3265; Rev 0; 5/04
Dual-Output, Multimode
CD-RW/DVD Laser-Diode Drivers
General Description
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 preci-
sion 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 out-
put swing. The MAX9484 features an extra resistor
input allowing the oscillation frequencies of the two out-
puts to be set separately. Additionally, the MAX9484
allows the writing control signals to be received in low-
voltage 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 tem-
perature range.
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
MAX9483/MAX9484
Applications
Laser Diode Driver for CD-RW and DVD
Combos: CD-R/RW, DVD-R, DVD+R, DVD-RW,
DVD+RW, DVD-RAM
DVD Video Recorders
High-Power and High-Speed Laser-Writable
Device Drivers
Pin Configurations
TOP VIEW
IN1 1
IN2 2
IN3 3
R
F
4
NE2 5
NE3 6
ENABLE 7
ENOSC 8
16 V
CC
15 OUT1
14 GND
Ordering Information
PART
MAX9483CEE
MAX9483CTE*
MAX9484CTP
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
16 QSOP
16 Thin QFN
20 Thin QFN
MAX9483
13 R
S1
12 R
S2
11 OUT2
10 OUTSEL
9
V
CC
*Future
product—contact factory for availability.
QSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________
Maxim Integrated Products
1
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.
Dual-Output, Multimode
CD-RW/DVD Laser-Diode Drivers
MAX9483/MAX9484
ABSOLUTE MAXIMUM RATINGS
V
CC
, V
CCO_
to GND ..............................................-0.3V to +6.0V
IN_, R
F_
, R
S_
to GND..................................-0.3V to (V
CC
+ 0.3V)
ENABLE, ENOSC, NE2_, NE3_,
OUTSEL to GND.....................................-0.3V to (V
CC
+ 0.3V)
Output Voltage at OUT1, OUT2......................-0.3V to (V
CC
- 1V)
Continuous Power Dissipation (T
A
= +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
(V
CC
= V
CCO_
= +4.5V to +5.5V, R
L
= 6.8Ω, ENABLE = high, NE2 = NE3 = high (MAX9483), NE2_ = NE3_ = differential high
(MAX9484), ENOSC = low, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at V
CC
= V
CCO_
= +5V, T
A
= +25°C.)
(Notes 1, 2, 4)
PARAMETER
POWER SUPPLY
Write-Mode Supply Current
I
CC1
I
IN1
= I
IN2
= I
IN3
= 500µA,
NE2 = NE3 = low
Oscillator enabled,
I
IN1
= I
IN2
= I
IN3
= 500µA,
ENOSC = high, R
S
= 8.2kΩ,
R
F
= 6.8kΩ
Oscillator disabled,
I
IN1
= I
IN2
= I
IN3
= 500µA
Supply Current
Power-Down Supply Current
I
CC3
I
CC4
Input disabled,
I
IN1
= I
IN2
= I
IN3
= 0
ENABLE = NE2 = NE3 = low,
I
IN1
= I
IN2
= I
IN3
= 0
MAX9483
MAX9484
MAX9483
MAX9484
MAX9483
MAX9484
MAX9483
MAX9484
MAX9483
MAX9484
2.0
0.8
V
IN
= high or low
-20
+20
50
-50
1.10
V
REF
+
300
V
REF
-
300
V
IN
= high or low
-20
+20
1.25
1.40
181
182
91
92
82
83
14
14
0.96
1.2
200
210
100
105
95
95
20
20
2.0
2.0
mA
mA
mA
mA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Read-Mode Supply Current
I
CC2
DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2, NE3) (MAX9483)
High-Level Input Voltage
Low-Level Input Voltage
Input Current
Differential Input High Threshold
Differential Input Low Threshold
Reference Voltage
High-Level Input Voltage
Low-Level Input Voltage
Input Current
V
IH1
V
IL1
I
IN1
V
TH
V
TL
V
REF
V
IH2
V
IL2
I
IN2
V
V
µA
mV
mV
V
mV
mV
µA
LVDS DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2_, NE3_) (MAX9484)
SINGLE-ENDED DIGITAL INPUTS FOR WRITE CHANNEL CONTROL (NE2+, NE3+) (MAX9484)
2
_______________________________________________________________________________________
Dual-Output, Multimode
CD-RW/DVD Laser-Diode Drivers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
CCO_
= +4.5V to +5.5V, R
L
= 6.8Ω, ENABLE = high, NE2 = NE3 = high (MAX9483), NE2_ = NE3_ = differential high
(MAX9484), ENOSC = low, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at V
CC
= V
CCO_
= +5V, T
A
= +25°C.)
(Notes 1, 2, 4)
PARAMETER
High-Level Input Voltage
Low-Level Input Voltage
Input Current
ANALOG INPUTS (IN1, IN2, IN3)
Current Channel Input Current
Range
Current Channel Input
Impedance
OUTPUTS (OUT1 and OUT2)
Maximum Total Output Current
Maximum Output Current per
Channel
Best-Fit Current Gain
Best-Fit Current Offset
Output Current Linearity
I
OFF1
Output Off Current
I
OFF2
I
OFF3
Read-Mode Output Supply
Sensitivity
Write-Mode Output Supply
Sensitivity
Read-Mode Output Temperature
Sensitivity
Write-Mode Output Temperature
Sensitivity
Output Noise
I
OUT
I
OUT
A
I
I
OFFSET
Read current IN1
Write current IN2, IN3
Any channel (Note 3)
Any channel (Note 3)
Any channel (Note 3)
ENABLE = low
NE2 = NE3 = high, I
IN1
= 0µA,
I
IN2
= I
IN3
= 500µA
NE2 = NE3 = low, I
IN1
= I
IN2
= I
IN3
= 0µA
I
OUT
= 40mA
I
OUT
= 80mA
I
OUT
= 40mA
I
OUT
= 80mA
I
OUT
= 40mA, ENOSC = low
-2
-2
15
16
3
-4
-3
0.2
0.22
0.14
320
210
250
400
273
347
100
+4
+3
1
1.5
5
+2
+2
%/V
%/V
ppm°C
ppm°C
nA/√Hz
mA
mA
mA
I/I
mA
%
I
CIN
R
IN
Current flowing into IN1, IN2, or IN3
IN_ to GND
0
165
200
4.0
235
mA
Ω
SYMBOL
V
IH3
V
IL3
I
IN3
V
IN
= high or low
-10
CONDITIONS
MIN
2.0
0.8
+10
TYP
MAX
UNITS
V
V
µA
MAX9483/MAX9484
DIGITAL INPUTS FOR CONTROL SIGNALS (ENABLE, OUTSEL, ENOSC)
_______________________________________________________________________________________
3
Dual-Output, Multimode
CD-RW/DVD Laser-Diode Drivers
MAX9483/MAX9484
AC ELECTRICAL CHARACTERISTICS
(V
CC
= V
CCO_
= +4.5V to +5.5V, I
OUT
= 40mA (read) + 40mA, R
L
= 6.8Ω, ENABLE = high, NE2 = NE3 = high (MAX9483), NE2_ =
NE3_ = differential high (MAX9484), ENOSC = low, T
A
= 0°C to +70°C, unless otherwise noted. Typical values are at V
CC
= V
CCO_
=
+5V, T
A
= +25°C.) (Notes 1, 4)
PARAMETER
OSCILLATOR
Oscillator Frequency
Oscillator Temperature
Coefficient
OUTPUT TIMING
Write Rise Time
Write Fall Time
Output-Current Overshoot
Output ON Propagation Delay
Output OFF Propagation Delay
Output Disable Time
Output Enable Time
Oscillator Disable Time
Oscillator Enable Time
t
r
t
f
OCO
t
ON
t
OFF
t
DIS
t
EN
t
DISO
t
EHO
t
ODH
Channel-Select Delay
t
ODL
OUTSEL 50% high-low to I
OUT
at 50% of final
value measured at OUT2
2.9
10
NE 50% high-low to IOUT at 50% of final value
NE 50% low-high to IOUT at 50% of final value
ENABLE 50% high-low to I
OUT
at 50% of final
value at I
OUT
= 40mA (read)
ENABLE 50% low-high to I
OUT
at 50% of final
value at I
OUT
= 40mA (read)
ENOSC 50% high-low to I
OUT
at 50% of final
value at I
OUT
= 40mA (read)
ENOSC 50% high-low to I
OUT
at 50% of final
value at I
OUT
= 40mA (read)
OUTSEL 50% low-high to I
OUT
at 50% of final
value measured at OUT1
I
OUT
= 40mA (read) + 40mA (10% to 90%)
I
OUT
= 40mA (read) + 40mA (90% to 10%)
0.9
1.0
5
1.0
1.0
60
60
4
25
2.9
2.0
2.0
100
100
10
50
10
ns
1.6
1.6
ns
ns
%
ns
ns
ns
ns
ns
ns
f
OSC
R
F_
= 7.5kΩ (Note 2), I
OUT
= 40mA (read)
R
F_
= 7.5kΩ
255
300
10
350
MHz
ppm/°C
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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 V
TH
.
Note 2:
Maximum and minimum limits over temperature are guaranteed by design and characterization. Devices are production
tested at T
A
= +25°C.
Note 3:
Linearity of the amplifier is calculated using a best-fit method at three operating points of I
OUT
at 20mA, 40mA, and 60mA.
I
OUT
= (I
IN
x GAIN) + I
OFFSET
.
Note 4:
Guaranteed by design and characterization. Limit set at ±6 sigma.
4
_______________________________________________________________________________________
Dual-Output, Multimode
CD-RW/DVD Laser-Diode Drivers
MAX9483/MAX9484
Typical Operating Characteristics
(V
CC
= V
CCO_
= +5V, T
A
= +25°C, unless otherwise noted.)
OSCILLATOR FREQUENCY
vs. RESISTOR R
F
MAX9483 toc01
OSCILLATOR PEAK-TO-PEAK SWING
vs. RESISTOR R
S
MAX9483 toc02
OSCILLATOR PEAK-TO-PEAK SWING
vs. FREQUENCY
90
80
70
SWING (mA
P-P
)
60
50
40
30
MAX9483 toc03
700
600
FREQUENCY (MHz)
500
400
300
200
100
3
4
5
6
7
8
9
10
11
80
70
60
SWING (mA
P-P
)
50
40
30
20
10
0
100
20
10
0
3
4
5
6
7
8
9
10
200 250 300 350 400 450 500 550 600
FREQUENCY (MHz)
R
S
(kΩ)
12
R
F
(kΩ)
OSCILLATOR FREQUENCY
vs. TEMPERATURE
MAX9483 toc04
OUTPUT CHANNEL CURRENT
vs. INPUT CURRENT (I
IN1
= I
IN2
= I
IN3
)
400
350
300
I
OUT
(mA)
250
200
150
100
50
0
V
CC
= 4.75V
V
CC
= 5.25V
V
CC
= 5.0V
MAX9483 toc05
320
315
310
FREQUENCY (MHz)
305
300
295
290
285
280
0
10
20
30
40
50
60
450
70
0
300
600
900
1200
1500
TEMPERATURE (°C)
I
IN_
(µA)
OUTPUT VOLTAGE COMPLIANCE
MAX9483 toc06
50mA +50mA PULSE (10ns)
MAX9483 toc07
350
300
250
I
OUT
(mA)
200
150
100
50
0
0
1
2
3
4
5
TIME (5ns/div)
V
CC
- V
OUT
(V)
_______________________________________________________________________________________
5
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