EL6281C [ELANTEC]
4-Channel Laser Driver with APC Amp; 与APC放大器4通道激光驱动器
| 型号： | EL6281C |
| 厂家： | 
ELANTEC SEMICONDUCTOR |
| 描述： | 4-Channel Laser Driver with APC Amp |
| 文件： | 总2页 (文件大小：144K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EL6281C - Product Brief
4-Channel Laser Driver with APC Amp
Features
General Description
• Read + 3 Write Channel laser
driver with oscillator & fast I/V
amplifier
• Rise time = 0.8 nsec
• Fall time = 0.8 nsec
• 200V/µs I/V amplifier
• 100X gain, 100mA low noise read
channel
• 200X gain, 200mA write channel
The EL6281C is a combination read + 3 write level laser driver with
IV amplifier. A dual amplitude, dual frequency RF oscillator sums on
the output for laser noise reduction during read or write. All these
functions are provided in 24-lead QSOP and LPP packages.
The ENABLE pin enables the read & write channels. Positive current
supplied to the IIN lines, through user selected resistors, allow the full
scale range of each amplifier to be matched to the full scale range of
the users control DACs. When the WEN pins are switched low, the
respective current is summed to the output with 1ns rise and fall times.
• Two 100X gain, 100mA write
channels
• 500MHz, 100mAP-P Oscillator
with dual frequency and amplitude
control
The 100mAP-P (max) oscillator is switched on and off by the OSCEN
line. The R/W line allows the oscillator to operate at one amplitude
and frequency when R/W is high, and another amplitude and fre-
quency when R/W is low.
The entire chip is powered down when ENABLE is low. The user can
calibrate the gain of the I/V amplifier. With a slew rate around
200V/µs, the I/V amplifier can normally settle to less than 1% within
30ns.
• 3.3V compatible logic signals
• Single +5V supply
Applications
• CD-RW to 16X
• CD-R to 32X
• Writable Optical Disk Drives
Connection Diagram
Ordering Information
1
2
3
4
5
6
7
8
9
VOUT
VREF
IINR
PDIN 24
VCC 23
Part No.
EL6281CU
EL6281CL
Temp. Range
0°C to +70°C
0°C to +70°C
Package
QSOP-24
LPP-24
Outline #
MDP0040
MDP0046
VCC 22
IIN2
RF1
1
2
3
4
5
6
7
19 VCC
18 IOUT
17 GND
16 GND
IIN2
IOUT 21
RFREQ1
IIN3
GND 20
IIN3
IIN4
RF2
GND 19
Thermal Pad
IIN4
RAMP1 18
RAMP2 17
ENABLE 16
OSCEN 15
VCC 14
RAMP1
15
14
13
RFREQ2
RWB
RWB
GND
RAMP2
ENABLE
10 GND
11 WEN4
12 WEN3
WEN2 13
24-Pin LPP Top View
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.
EL6281C - Product Brief
4-Channel Laser Driver with APC Amp
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 cir-
cuitry 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 sup-
port or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
expected to result in significant personal injury or death. Users con-
templating 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. Elan-
tec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
Fax:
(408) 945-9305
European Office: +44-118-977-6020
Japan Technical Center: +81-45-682-5820
Printed in U.S.A.
2
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