EL6205 Datasheet, PDF (1/8 Pages) Intersil Corporation – Laser Driver Oscillator

®
Data Sheet
March 1, 2004
EL6205
FN7220.1
Laser Driver Oscillator
The EL6205 consists of a variable
amplitude, push only, oscillator that
also supplies the laser DC current. It is
designed to easily interface to existing ROM controllers,
reducing parts count, and power dissipation.
The reduction of parts count and the small package allows
the oscillator to be placed closer to the laser, thus reducing
EMI. Also, the turn-on and turn-off edges are slew rate
limited to reduce higher harmonics.
The total current drawn from the power supply can be less
than the laser threshold current due to the unique push-only
modulation method. The average current is less than the
peak oscillator current, and can be less than half of the
oscillator current. The power control current supplied from
the main board is reduced to less than 2mA.
One external resistor sets the oscillator frequency. A current
applied to the IIN terminal determines the amplitude of the
oscillator and laser DC current. If the oscillator amplitude is
set very low, the output and oscillator are disabled. The part
is available in the space-saving 6-pin SOT-23 package. It is
specified for operation from 0°C to +70°C.
Pinout
EL6205
(6-PIN SOT-23)
TOP VIEW
1 IOUT
2 VDD
3 GND1
RFREQ 6
GND2 5
IN 4
Features
• Low power dissipation
• Reduced parts count from the conventional solution
• User-selectable frequency from 60MHz to 600MHz
controlled with a single resistor
• User-selectable amplitude from 15mA_PK-PK to
100mA_PK-PK controlled by 0.3mA to 2mA input current
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small 6-pin SOT-23 package
Applications
• DVD players
• DVD-ROM drives
• Combo drives
• MO drives
• General purpose laser noise reduction
• Local oscillator capability
Ordering Information
PART NUMBER PACKAGE TAPE & REEL PKG. DWG. #
EL6205CW-T7 6-Pin SOT-23 7” (3K pcs) MDP0038
EL6205CW-T7A 6-Pin SOT-23 7” (250 pcs) MDP0038
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.