EL6290C - Product Brief
EL6290C - Product Brief
Laser Diode Driver with Waveform Generator
Features
• Complete programmable laser
diode driver
• 250mA maximum output
• 8bit x 8bit multiplying DAC output
provides 8bit full scale adjustment
and 8bit resolution at any full scale
output
• 0.5ns timer resolution
• Two laser outputs allows
read/write DVD and CD
combinations
• Programmable waveform values
support 2.6GB DVD-RAM, 4.7GB
DVD-RAM, DVD-R, DVD+RW,
DVD-RW, CD-RW, and CD-R
• Analog input supports APC
• HFM oscillator programmable to
100mAp-p from 200 to 500MHz
• PLL allows reduced-frequency
clock on flex cable
• Separate serial input works up to
25Mb/sec
General Description
The EL6290C is a highly integrated laser diode driver designed to sup-
port multi-standard writable optical drives. It accomplishes this by
incorporating a waveform generator wherein the diode currents and
timing details can be programmed before operation. The data input cir-
cuitry inspects the NRZ serial data waveform and generates
programmed waveforms in recognition of 3, 4, 5, or 6 or more clock
periods of space changing to 3, 4, 5, or 6 or more clock periods of
mark, and vice versa.
This programmable architecture allows reprogramming of the timers
to support different media, DVD or CD standards, and different
speeds. The programming is accomplished through a serial interface
port. Two outputs are provided to support dual-laser multi-standard
optical heads.
The EL6290C operates on a 5V supply, but has a separate logical
interface supply for 3.3V interface operation.
The EL6290C is availiable in a 24-lead QSOP, or in a 32-lead QFN
package for improved thermal performance and reduced board area
usage.
Applications
• Combination DVD writable and
CD writable drives
• DVD Camcorders
• DVD Video Recorders
Connection Diagrams
32
31
30
29
28
27
26
SCLK
R/W
NC
SEN
NC
2
SCLK
R/W
CLK
NRZ
VSL
GND
VSA
RFREQ
RSET
IAPC
GND
MON
VSO
OUT1
OUT1
GND
VSO
OUT2
OUT2
VSO
L/G
ENA
23
1
CLK
NRZ
VSL
GND
GND
NC
VSA
VSA
RFREQ
RSET
IAPC
GND
GND
ENA
L/G
NC
MON
VSO
OUT1
OUT1
GND
VSO
VSO
OUT2
OUT2
VSO
25
24
23
22
21
20
19
18
1
3
22
2
Ordering Information
Part No
EL6290CU
EL6290CL
EL6290CJ
Temp. Range
0°C to +75°C
0°C to +70°C
0°C to +70°C
Package
24-Lead QSOP
32-Lead QFN
32-Lead LPP
Outline #
MDP00040
MDP0045
MDP0046
4
21
3
5
20
4
6
19
5
7
18
6
8
17
7
9
16
8
10
15
SDIO
SDIO
SEN
24
May 12, 2000
9
11
14
17
12
13
Note:
All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a “controlled document”. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
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11
12
13
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© 2001 Elantec Semiconductor, Inc.
ELANTEC [ ELANTEC SEMICONDUCTOR ]
