2000 Elantec Semiconductor, Inc.
EL
6270C -
Produ
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t
B
r
ief
North America: 1-888-352-6832 X 311
Asia: +85-45-682-5820
Europe: +44-18-977-6020
Complete Product Specifications
Elantec Technical Support:
Features
Low output noise = 4.0nA/rt-Hz
High-performance laser diode
driver
Pin compatible with EL6257
Voltage-controlled output current
source to 150 mA per channel,
requiring one external set resistor
per channel
Current-controlled output current
source to 150 mA per channel
Rise time = 1.0 ns
Fall time = 1.1 ns
On chip oscillator with frequency
and amplitude control by use of
external resistors to ground
Oscillator to 500 MHz
Oscillator to 100 mA pk/pk
Single +5V supply (10%)
Disable feature for power-up
protection and power savings
TTL/CMOS control signals
Applications
DVD-RAM high speed drives
CD-RW applications
Writable optical drives
Laser diode current switching
Ordering Information
Part No
Temp. Range
Package
Outline #
EL6259CU
0C to +70C
QSOP-24
MDP0040
EL6270C - Product Brief
Laser Driver with Ocillator and APC
Jan
uary 31, 2000
General Description
The EL6270C is a high-performance single channel laser diode power
regulator and oscillator for a grounded cathode laser diode and photo-
diode system. The EL6270C's APC (Automatic Power Controller) will
set the average laser diode input current for a desired average photo-
diode output current. The APC can provide up to 100 mA of DC
current.
An on-chip programable oscillator is provided to allow current modu-
lation of the output laser current. Two external resistors control of
amplitude and frequency. The Oscillator can provide up to 100mA
pk/pk.
A disable function is included which reduces supply current to less
than 5A.
Connection Diagram
1
2
3
4
8
7
6
5
8-Pin SOIC/MSOP-8
RAMP
RFREQ
CE
COMP
V
S
I
OUT
GND
LSI
2
EL6270C - Product Brief
Laser Driver with Ocillator and APC
EL627
0C
- Produ
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t
General Disclaimer
Specifications contained in this product brief are in effect as of the publication date shown. Elantec Semiconductor, Inc. reserves the right to make
changes in the circuitry or specifications contained herein at any time without notice. Elantec Semiconductor, 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 Semiconductor, Inc. products are not authorized for and
should not be used within Life Support Systems without the specific
written consent of Elantec Semiconductor, Inc. Life Support sys-
tems are equipment intended to support or sustain life and whose
failure to perform when properly used in accordance with instruc-
tions provided can be reasonably expected to result in significant
personal injury or death. Users contemplating application of Elantec
Semiconductor, Inc. Products in Life Support Systems are requested
to contact Elantec Semiconductor, Inc. factory headquarters to
establish suitable terms & conditions for these applications. Elantec
Semiconductor, Inc.'s warranty is limited to replacement of defec-
tive components and does not cover injury to persons or property or
other consequential damages.
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) 352-6832 (toll free)
Fax:
(408) 945-9305
European Office: 44-18-977-6020
Jan
uary 31, 2000
Printed in U.S.A.
Japan Office:
85-45-682-5820
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