EL6202CW-T7 查看數據表（PDF） - Intersil

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EL6202CW-T7

Laser Driver Oscillator

Intersil 

Typical Application Circuit

TYPICAL

ROM LASER

DRIVER

GAIN

SETTING

RESISTOR

+5V

DAC

FLEX

CONTROLLER

4.7µF

EL6202

EMI

REDUCTION

SUPPLY

FILTER

BEAD

0.1µF

FREQUENCY

SETTING

RESISTOR

GND

1 VDD1

2 GND

3 IOUT

LASER DIODE

RFREQ 5

IIN 4

PHOTO DIODE

Either the high current controller resistor can be

reduced to 2mA full scale, or the transistor and resistor

can be replaced with a resistor from the controller DAC.

optional

EMI

BLOCKING

RESISTOR

LOOP

COMPENSATION-

NOISE

REDUCTION

CAPACITOR

~10mW LASER OUTPUT

POWER

THRESHOLD

CURRENT

LASER OUTPUT POWER

0mW

0mA

~60mA LASER CURRENT

OSCILLATOR CURRENT

Applications Information

Product Description

The EL6202 is a solid state, low-power, high-speed laser

modulation oscillator with external resistor-adjustable

operating frequency. It is designed to interface easily to laser

diodes to break up optical feedback resonant modes and

thereby reduce laser noise. The output of the EL6202 is

composed of a push current source switched at the oscillator

6

frequency. The output and oscillator are automatically

disabled for power saving when the average input current

drops to less than 100µA. The EL6202 has the operating

frequency from 60MHz to 600MHz and the output current

from 10mAP-P to 100mAP-P. The supply current is only

30mA (includes laser current) for the output current of

50mAP-P at the operating frequency of 350MHz.

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