M61880FP Datasheet, PDF (1/21 Pages) Mitsubishi Electric Semiconductor – Laser-diode driver / controller

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
RS
1
GND1 2
RB
3
VB
4
Reference voltage output _Vref
5
Reference voltage input Vr
6
Hold capacitance connection pin CH
7
Sample-and-hold control input S/H
8
Power supply 1
VCC1 9
NC 10
20 VCC2
Power supply 2
19 RO Laser current load output
18 NC
17 LD Laser current output
16 GND2
15 PD
14 DATA
Ground 2
Monitoring photodiode
current input
Switching data input
13 ENB Laser current enable input
12 2RM _{Monitoring load resistance}
11 1RM ^{connection pins}
Package: 20P2N-A
NC: Not connected
Rev.1.0, Sep.19.2003, page 1 of 20