Elantec EL6290CL Laser diode driver with waveform generator Datasheet

Laser Diode Driver with Waveform Generator
Features
General Description
• 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
The EL6290C is a highly integrated laser diode driver designed to support 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 circuitry 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.
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.
CLK
OUT1
21
EL6290CU
0°C to +75°C
24-Lead QSOP
MDP00040
EL6290CL
0°C to +70°C
32-Lead QFN
MDP0045
EL6290CJ
0°C to +70°C
32-Lead LPP
MDP0046
NRZ
OUT1
VSL
GND
19
7
GND
VSO
18
VSA
RFREQ
10
RSET
OUT1
24
3
VSL
OUT1
23
4
GND
GND
22
5
GND
VSO
21
6
NC
VSO
20
7
VSA
OUT2
19
8
VSA
OUT2
18
9
RFREQ
VSO
17
17
OUT2
16
VSO
15
11
IAPC
L/G
14
12
GND
ENA
13
16
15
14
13
12
11
10
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.
© 2001 Elantec Semiconductor, Inc.
May 12, 2000
9
OUT2
2
20
6
8
25
L/G
Outline #
VSO
NRZ
ENA
Package
CLK
GND
Temp. Range
1
GND
5
Part No
26
4
MON
22
27
VSO
NC
R/W
28
3
29
23
NC
MON
SEN
SCLK
30
2
31
24
SDIO
SEN
SCLK
SDIO
32
1
R/W
Connection Diagrams
NC
Ordering Information
The EL6290C operates on a 5V supply, but has a separate logical
interface supply for 3.3V interface operation.
IAPC
• Combination DVD writable and
CD writable drives
• DVD Camcorders
• DVD Video Recorders
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.
RSET
Applications
EL6290C - Product Brief
EL6290C - Product Brief
EL6290C - Product Brief
EL6290C - Product Brief
Laser Diode Driver with Waveform Generator
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the circuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.
WARNING - Life Support Policy
Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to support or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
expected to result in significant personal injury or death. Users contemplating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elantec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
May 12, 2000
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
Fax:
(408) 945-9305
European Office: +44-118-977-6020
Japan Technical Center: +81-45-682-5820
2
Printed in U.S.A.
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