EL6208 Datasheet, PDF (1/10 Pages) Intersil Corporation – Dual Push-Pull Laser Driver Oscillator

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Data Sheet
July 23, 2003
EL6208
FN7374
Dual Push-Pull Laser Driver Oscillator
The EL6208 is a dual push-pull
oscillator used to reduce laser noise in
twin laser diodes. It uses the standard
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.
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.
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.
The EL6208 operates from a signal +5V supply. Power
consumption is very low. The EL6208 part is available in the
space-saving 6-pin SOT-23 package and is specified for
operation from 0°C to +70°C.
Ordering Information
PART NUMBER PACKAGE
TAPE &
REEL
PKG. DWG. #
EL6208CW-T7 6-Pin SOT-23 7” (3K pcs) MDP0038
EL6208CW-T7A 6-Pin SOT-23 7” (250 pcs) MDP0038
Features
• Low power dissipation
• User-selectable frequency from 60MHz to 600MHz
controlled with a single resistor
• User-specified amplitude from 10mA_PK-PK to
100mA_PK-PK controlled with a single resistor
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small 6-pin SOT-23 package
Applications
• CD-DVD ROM drives
Pinout
EL6208
(6-PIN SOT-23)
TOP VIEW
VDD 1
RFREQ 2
RAMP 3
6 ^IOUT2
5 ^GND
4 ^IOUT1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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