DESCRIPTION

s Up to 1.25Gb/s operation

s 75mA peak drive current

s Separate modulation control

s Separate master reset for laser safety

s Differential inputs for data and clock

s 75K

s Single power supply

s Available in 16-pin SOIC package

The SY100EL1001 is a high speed current source for

driving a semiconductor laser diode in optical transmission

applications. The output current modulation is DC –

voltage controlled. The integrated circuit contains the

following functional blocks:

• Input Line Receiver

• D Flip-Flop

• Bias Control Circuitry

• Output Current Switch

A logic HIGH level at the data input results in the

modulation current flowing through the OUT pin on the

next rising edge of the clock. A logic HIGH level at the

master reset input will disable the modulation current.

The device incorporates complementary open collector

outputs with a capability of driving peak current of 75

mA.

The laser driver current is adjustable by selection of

recommended to fix laser diode matching issues.

The SY100EL1001 utilizes the high performance

bipolar ASSET technology.

FEATURES

LASER DIODE DRIVER

WITH INPUT D FLIP-FLOP

PIN CONFIGURATION

PRELIMINARY

SY100EL1001

Rev.: E

Amendment: /0

Issue Date:

August, 1998

BLOCK DIAGRAM

CLK, CLK

D, D

MR

OUT

to Laser Diode

BIAS

Control

MC

Modulation Control

D Flip-Flop

OUT

NC

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

CLK

CLK

D

D

MR

NC

MC

OUT

OUT

NC

Top View

SOIC

Z16-2

1