The MAX3738ETG+T is a 155Mbps to 4.25Gbps SFF/SFP laser driver with extinction ratio control (ERC) in 24 pin TQFN package. This 3.3V laser driver designed for multirate transceiver modules with data rates from 155Mbps to 4.25Gbps. Lasers can be DC coupled to MAX3738ETG+T for reduced component count and ease of multirate operation. Laser ERC combines features of automatic power control (APC), modulation compensation and built-in thermal compensation. The APC loop maintains constant average optical power. The wide 5mA to 60mA (up to 85mA AC coupled) modulation current range and up to 100mA bias current range make MAX3738ETG+T ideal for driving FP/DFB lasers in fibre optic modules. The MAX3738ETG+T provides transmit disable control, single point fault tolerance, bias current monitoring and photocurrent monitoring. It is used in multirate OC-3 to OC-48 FEC transceivers, gigabit Ethernet SFF/SFP and GBIC transceivers, 1Gbps/2Gbps/4Gbps fibre channel SFF/SFP and GBIC transceivers.
Feature
Supply voltage range from 2.97V to 3.63V
Operating temperature range from -40°C to 85°C
47mA power supply current and 85mA modulation current
Modulation compensation and on-chip temperature compensation
Self biased inputs for AC coupling, enable control and laser safety feature
Ground referenced current monitors, laser shutdown and alarm outputs
Deterministic jitter of 18psP-P (2.7Gbps, 5mA <= IMOD <= 85mA) and random jitter of 0.62psRMS
Modulation current temperature stability of ±175ppm/°C (5mA <= IMOD <= 10mA)
Power supply noise rejection of 33dB at f <= 1MHz
Output edge speed of 65ps at 5mA <= IMOD <= 85mA
Applications
1Gbps/2Gbps/4Gbps Fibre Channel SFF/SFP and GBIC Transceivers
Gigabit Ethernet SFF/SFP and GBIC Transceivers
Multirate OC-24 to OC-48 FEC Transceivers
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
