© Semiconductor Components Industries, LLC, 2006

January, 2006 − Rev. 3

1

Publication Order Number:

MC10SX1130/D

MC10SX1130

LED Driver

Description

The MC10SX1130 is high speed LED Driver/current switch

specifically targeted for use in FDDI PMD and ANSI X3T9.3

FibreChannel 266 Mbits/s optical transmitters. The integrated circuit

contains several unique functional blocks which makes it easily

configurable for use with a variety of high performance LED devices.

The part is fabricated using MOSAIC III

™ bipolar process. The logic

is designed so that a data HIGH input results in the modulation current

The device incorporates open collector outputs with a capability of

driving peak currents of 100 mA. Since the output current switching

circuitry simply switches current between the complementary outputs,

the dynamic switching demands on the system power supply are

greatly reduced. In addition, because the design is pure bipolar, the

device current drain is insensitive to the data pattern and frequency of

operation.

The LED drive current is adjustable through the selection of an

external set resistor, RSET. In addition, to allow for open loop

compensation for the LED’s negative optical output power tracking

over temperature, a circuit is included to provide an adjustable positive

temperature tracking coefficient to the LED drive current. This is

controlled through the selection of an external resistor, RTCO.

The MC10SX1130 incorporates novel pulse stretching circuitry

which is intended to compensate for the turn-on delay and rise and fall

time asymmetry inherent in LED devices. The stretch circuitry can be

used to pre-distort the input signal pulse width to minimize the duty

cycle distortion of the transmitted optical eye pattern. The stretch

circuitry supports three different selections of pre-distortion. This

choice is accomplished through a unique ‘tri-state’ input which can be

amount.

should only be used as a bias for the MC10SX1130 as its current

be bypassed to ground via a 0.01

mF capacitor.

Features

*For additional information on our Pb−Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

LED DRIVER

SOIC−16

D SUFFIX

CASE 751B

http://onsemi.com

MARKING DIAGRAM

A

= Assembly Location

WL

= Wafer Lot

Y

= Year

WW

= Work Week

G= Pb−Free Package

See detailed ordering and shipping information in the package

dimensions section on page 8 of this data sheet.

ORDERING INFORMATION

10SX1130G

AWLYWW