EL6208
®
Data Sheet
August 10, 2007
FN7374.1
Dual Push-Pull Laser Driver Oscillator
Features
The EL6208 is a dual push-pull
oscillator used to reduce laser noise in
twin laser diodes. It uses the standard
• Low power dissipation
• User-selectable frequency from 60MHz to 600MHz
controlled with a single resistor
interface to existing ROM controllers. The frequency and
amplitude are both set with a separate resistor connected to
ground. The tiny package and harmonic reduction allow the
part to be placed close to a laser with low RF emissions. An
auto turn-off feature allows activates the oscillator only when
the APC current is applied.
• User-specified amplitude from 10mA
to
P-P
controlled with a single resistor
100mA
P-P
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small 6 Ld SOT-23 package
• Pb-free available (RoHS compliant)
If the APC current is reduced such that the average laser
voltage drops to less than 1.1V, the output and oscillator are
disabled, reducing power consumption to a minimum.
Applications
The current drawn by the oscillator consists of a small utility
current, plus the peak output amplitude in the positive cycle.
In the negative cycle the oscillator subtracts peak output
amplitude from the laser APC current. The waveform is
filtered to reduce EMI emissions.
• CD-DVD ROM drives
Pinout
EL6208
(6 LD SOT-23)
TOP VIEW
The EL6208 operates from a signal +5V supply. Power
consumption is very low. The EL6208 part is available in the
space-saving 6 Ld SOT-23 package and is specified for
operation from 0°C to +70°C.
IOUT2
GND
VDD
1
2
3
6
RFREQ
RAMP
5
4
Ordering Information
IOUT1
PART
PART
PKG.
NUMBER
MARKING
PACKAGE
DWG. #
EL6208CW
7
7
7
6 Ld SOT-23 MDP0038
6 Ld SOT-23 MDP0038
6 Ld SOT-23 MDP0038
EL6208CW-T7*
EL6208CW-T7A*
EL6208CWZ
BPAA
6 Ld SOT-23 MDP0038
(Pb-free)
EL6208CWZ-T7* BPAA
EL6208CWZ-T7A* BPAA
6 Ld SOT-23 MDP0038
(Pb-free)
6 Ld SOT-23 MDP0038
(Pb-free)
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J STD-020.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
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