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PDF EL6204CW Data sheet ( Hoja de datos )
| Número de pieza | EL6204CW | |
| Descripción | Laser Driver Oscillator | |
| Fabricantes | Elantec Semiconductor | |
| Logotipo |  |
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EL6204C - Product Brief
Laser Driver Oscillator
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 SOT23 package
Applications
• DVD players
• DVD-ROM drives
• CD-RW drives
• MO drives
• General purpose laser noise
reduction
• Local oscillators
General Description
The EL6204C is a push-pull oscillator used to reduce laser noise. It
uses the standard interface to existing ROM controllers. The fre-
quency and amplitude are each 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 fea-
ture allows it to easily be used on combo CD-RW plus DVD-ROM
pick-ups.
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 EL6204C part is available in the space-saving 6-pin SOT23 pack-
age and is specified for operation from 0°C to +70°C.
Ordering Information
Part No
EL6204CW
Package
6-Pin SOT23
Tape & Reel
Outline #
MDP0038
Connection Diagram
1 IOUT
RFREQ 6
2 VDD
GND2 5
3 GND1
RAMP 4
6-Pin SOT23
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.
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