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)
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
R
S
1
20 V
CC2
19
RO
Power supply 2
Laser current load output
GND1 2
R
B
V
B
V
ref
V
r
C
H
S/H
V
CC1
3
4
5
6
7
8
9
18 NC
17
LD
Laser current output
Ground 2
Monitoring photodiode
current input
Switching data input
Laser current enable input
Monitoring load resistance
connection pins
M61880FP
16 GND2
15
14
13
12
11
PD
DATA
ENB
2RM
1RM
NC 10
Package: 20P2N-A
NC: Not connected
Rev.1.0, Sep.19.2003, page 1 of 20