Features: ·-40°C to +140°C Operating Junction Temperature Range
·+3.0V to +5.25V Supply Voltage
·TTL/CMOS-, LVDS-, or PECL-Compatible Data Input
·Compatible with SP1 Automotive Network Interface
·Wirebond-Adjustable VCSEL Low and High Currents
·Optical Power-Reduction Feature
·Output SquelchApplication·Optical Transmitters for Automotive Networks
·Polymer-Clad Silica Fiber-Based NetworksSpecificationsSupply Voltage, (VCC - VEE) ..............................-0.5V to +6.0V
Voltage at 3DB, IN+, IN-, IN_TTL, DIFF, OUT, OUT,
MOD1, MOD2, DT01, DT02, SQEN,
TEMPSENS..............................................-0.5V to (VCC + 0.5V)
Voltage at LOW1, LOW2, TC1, TC2, TC3..............-0.5V to +2V
Differential Input Voltage |IN+ - IN-|.................................VCC
Current into OUT...........................................................+12mA
Storage Ambient Temperature Range.........-65°C to +150°C
Operating Junction Temperature Range......-40°C to +150°C
Electrostatic Discharge (ESD)
(Human Body Model, tested per JES D22-A114) ............... 2kV
(Machine Model, tested per JES D22-A115) .................. +400V
Die Attach Temperature...............................................+400°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe MAX3905 150Mbps automotive VCSEL driver implements low-cost transmitters operating from 8Mbps to 150Mbps at junction temperatures up to +140°C. The device accepts single-ended TTL, differential PECL or LVDS input data, and provides bias and modulation currents for driving a VCSEL. The output of MAX3905 is DC-coupled to the VCSEL to minimize component count.
The driver MAX3905 provides temperature compensation to VCSEL high and low currents. Adjustments of the bias current, modulation current, bias-current temperature coefficient, and center of the temperature-stable bias
current region are all programmable by wirebond options. The power-reduction feature decreases output modulation by approximately 50%. The data squelch feature of MAX3905 disables the VCSEL current when no data is present.
The MAX3905 is available in die form and operates from -40°C to +140°C junction temperature, over a +3.0V to +5.25V supply range.
MAX3905 Data Sheet
