Rev.1.0, Sep.19.2003, page 1 of 20

M61880FP

Laser Diode Driver/Controller

REJ03F0068-0100Z

Rev.1.0

Sep.19.2003

Description

The M61880FP is a laser diode driver/controller that performs drive and laser power control of a type of semiconductor

laser diode in which the semiconductor laser diode anode and monitoring photodiode cathode are connected to the stem.

The M61880FP has a sink type laser drive current output pin, is capable of high-speed switching at up to 200 Mbps,

and can drive a laser diode at a maximum drive current of 100 mA (drive current = switching current + bias current).

A high-speed sample-and-hold circuit is incorporated, enabling a self-APC* system to be implemented without the

need for laser power control from outside.

* Automatic Power Control

Features

• On-chip self-APC sample-and-hold circuit

High-speed sampling circuit

APC 1% variance response time = 1 µs (C = 0.047 µF)

High-impedance hold circuit

(1% error or less at C = 0.047 µF, t = 1 ms)

• High-speed switching (200 Mbps max.)

• High drive current (100 mA max.)

• Bias current settable (40 mA max.)

• 5 V single power supply

Application

Semiconductor laser diode application systems (LBPs, PPCs, optical communications, measuring instruments, etc.)

Pin Configuration (Top View)

20

17

18

19

1

4

3

2

16

5

15

6

14

7

13

8

12

9

11

10

RO

NC

LD

GND2

PD

DATA

ENB

2RM

1RM

GND1

Power supply 2

Laser current load output

Laser current output

Ground 2

Monitoring photodiode

current input

Switching data input

Laser current enable input

Monitoring load resistance

connection pins

Switching current setting

resistance connection pin

Ground 1

Bias current setting resistance

connection pin

Bias current setting voltage input

Reference voltage output

Reference voltage input

Hold capacitance connection pin

Sample-and-hold control input

Power supply 1

NC: Not connected

Package: 20P2N-A

NC

S/H