MAX3930 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – 10.7Gbps Laser Diode Drivers

19-1856; Rev 3; 3/02
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10.7Gbps Laser Diode Drivers
General Description
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.
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.
The MAX3931/MAX3932 have an alternate pad out with
respect to the MAX3930. The MAX3931 includes the
series damping resistor R_D on chip.
The MAX3930/MAX3931/MAX3932 also include an
adjustable pulse-width control circuit to minimize laser
pulse-width distortion.
________________________Applications
SONET OC-192 and SDH STM-64
Transmission Systems
Up to 10.7Gbps Optical Transmitters
Section Regenerators
Features
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
o Selectable Data Retiming Latch
o ESD Protection
o Internal Series Damping Resistor (MAX3931)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX3930E/D
-40°C to +85°C
Dice
MAX3931E/D
-40°C to +85°C
Dice
MAX3932E/D
-40°C to +85°C
Dice
MAX3932E/W
-40°C to +85°C
Wafer
Note: Dice are designed to operate over a -40°C to +120°C
junction temperature (T_J) range but are tested and guaranteed
at T_A = +25°C.
Typical Application Circuit
5V
VBIAS
5V
5V
DATA+
DATA-
MAX3910
10Gbps ^CLK+
SERIALIZER
CLK-
50Ω DATA+
50Ω DATA-
5V
VTT
50Ω
CLK+
50Ω
CLK-
RTEN
MAX3930
VCC
MODN1
MOD1
MOD2
MODN2
BIAS
VEE
0.01µF
5V
RD = 15Ω
20Ω
5V
LB
5V
2kΩ
REPRESENTS A CONTROLLED–
IMPEDANCE TRANSMISSION LINE
VMOD
† _C0.
________________________________________________________________ Maxim Integrated Products 1
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