September 1998

ML6633

*

High Speed Fiber Optic LED Driver

GENERAL DESCRIPTION

The ML6633 is a high speed fiber optic LED driver suited

for networking applications up to 200 Mbps. The part is

capable of driving up to 82mA of current through a fiber

optic LED from an ECL level input signal. Its efficient

output stage provides a high current that can be

programmed for accurate absolute output level which

insures precise launch power.

The LED driver’s output stage provides a fast well

matched rise and fall time through a unique differential

output stage.

The ML6633 high speed fiber optic LED driver is

implemented in BiCMOS process and is available in an

8-pin SOIC package.

FEATURES

n Data rates up to 200Mbps

n Current driven output for accurate launch power

n Programmable output current from 20mA to 82mA

n High Efficiency Output Stage

n Low EMI/RFI Noise

n ECL inputs

n Industrial temperature version available

n May be used with ML6622 quantizer

APPLICATIONS

n FDDI

n Fast Ethernet, 100BASE-FX

n ATM (SONET), 155Mbps

n Proprietary high-speed fiber optic data links

BLOCK DIAGRAM

*Some Packages Are Obsolete

1

+

BUFFER

–

+

DRIVER

–

IOUT

REF

RTSET

ECLP

ECLN

GND

6

5

8

3

2

7