19-1856; Rev 3; 3/02
10.7Gbps Laser Diode Drivers
General Description
Features
The MAX3930/MAX3931/MAX3932 are designed for
direct modulation of laser diodes at data rates up to
10.7Gbps. They provide adjustable laser bias and
modulation currents and are implemented using
Maxim’s second-generation in-house SiGe process.
o Single +5V or -5.2V Power Supply
o 108mA Supply Current
o Operates to 10.7Gbps
o 50Ω On-Chip Input Termination Resistors
o Programmable Modulation Current to 100mA
o Programmable Laser Bias Current to 100mA
o 25ps Rise Time (MAX3930/MAX3932)
o Adjustable Pulse-Width Control
The MAX3930 accepts differential CML clock and data
input signals and includes 50Ω on-chip termination
resistors. It delivers a 1mA to 100mA laser bias current
and a 20mA to 100mA modulation current with a typical
(20% to 80%) 25ps rise time. An input data retiming
latch can be used to reject input pattern-dependent jitter
if a clock signal is available.
o Selectable Data Retiming Latch
o ESD Protection
The MAX3931/MAX3932 have an alternate pad out with
respect to the MAX3930. The MAX3931 includes the
series damping resistor R on chip.
D
o Internal Series Damping Resistor (MAX3931)
Ordering Information
The MAX3930/MAX3931/MAX3932 also include an
adjustable pulse-width control circuit to minimize laser
pulse-width distortion.
PART
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
Dice
Dice
Dice
Wafer
MAX3930E/D
MAX3931E/D
MAX3932E/D
MAX3932E/W
________________________Applications
SONET OC-192 and SDH STM-64
Transmission Systems
Note: Dice are designed to operate over a -40°C to +120°C
junction temperature (T ) range but are tested and guaranteed
Up to 10.7Gbps Optical Transmitters
Section Regenerators
J
at T = +25°C.
A
Typical Application Circuit
5V
5V
V
BIAS
5V
0.01µF
V
CC
5V
DATA+
DATA-
DATA+
DATA-
50Ω
MODN1
MOD1
R
D
= 15Ω
50Ω
20Ω
5V
MAX3910
V
TT
MOD2
5V
MAX3930
CLK+
CLK-
CLK+
50Ω
50Ω
10Gbps
SERIALIZER
MODN2
BIAS
CLK-
RTEN
L
B
V
EE
5V
2kΩ
REPRESENTS A CONTROLLED–
IMPEDANCE TRANSMISSION LINE
V
MOD
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.