EL6207 Datasheet, PDF (1/7 Pages) Intersil Corporation – Dual Laser Driver Oscillator

®
Data Sheet
October 10, 2002
EL6207
FN7221
Dual Laser Driver Oscillator
The EL6207 is a dual push-pull
oscillator used to reduce laser noise. It
is optimized for 350MHz operation,
allowing reduced concern for harmonic EMI. It uses the
standard interface to existing ROM controllers. The
frequency and amplitude are each set with a separate
resistor connected to ground, for each output. The tiny
package and harmonic reduction allow the part to be placed
close to a laser with low RF emissions.
If the voltage at both I_OUT pins is less than 1.0V, the chip will
be powered down and not oscillate. If the voltage at either
I_OUT pin is above 1.4V, the chip will be powered up and
oscillating. If both I_OUT pins are above 1.4V, the chip will
also be powered down, and not oscillate.
The current drawn by the oscillator consists of a small utility
current, plus the peak oscillator amplitude in the positive
cycle, which is routed to the enabled I_OUT pin. In the
negative cycle the oscillator subtracts peak oscillator
amplitude from the laser APC current.
The part operates from a single 5V supply, and is specified
for operation from 0°C to +85°C.
Pinout
EL6207
(8-PIN LPP)
TOP VIEW
VDD 1
IOUT1 2
GND 3
IOUT2 4
8 RAMP1
7 RAMP2
6 RFREQ1
5 RFREQ
Features
• Low power dissipation
• User-selectable frequency from 100MHz to 600MHz
controlled with a single resistor for each laser
• User-specified amplitude from 10mA_PK-PK to 100mA_PK
controlled with a single resistor for each output
• Auto turn-off threshold
• Soft edges for reduced EMI
• Small 8-pin LPP package
Applications
• Combi drive using dual laser
Ordering Information
PART
NUMBER
PACKAGE TAPE & REEL
EL6207CL
8-Pin LPP
-
PKG. NO.
MDP0047
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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