MAXIM MAX3967AETG+

The MAX3967A is a programmable LED driver for fiber optic transmitters operating at data rates up to 270Mbps. The circuit contains a high-speed current driver with programmable temperature coefficient (tempco), adjustments for LED prebias voltage, and a disable feature. The circuit accepts PECL data inputs, and operates from a single +2.97V to +5.5V power supply.

• The MAX3967A is a programmable LED driver for fiber optic transmitters operating at data rates up to 270Mbps
• The circuit contains a high-speed current driver with programmable temperature coefficient (tempco), adjustments for LED prebias voltage, and a disable feature
• The circuit accepts PECL data inputs, and operates from a single +2.97V to +5.5V power supply
• The SFP LED driver can switch up to 100mA into typical high-speed light-emitting diodes
• As temperature increases, the device’s modulation current increases with a tempco that is programmable from 2500ppm/°C to 12,000ppm/°C
• The modulation current is programmed with a single external resistor
• The MAX3967A’s LED prebias voltage is programmable from 400mV to 925mV
• The prebias circuit produces peaking current, which improves the LED switching speed
• Complementary current outputs help to maintain a constant supply current, reducing EMI and supply noise generated by the transmitter module
• The MAX3967A is available in die form, or in a 4mm×4mm, 24-pin thin QFN package
• TX_DISABLE for SFP Compatibility
• Single +2.97V to +5.5V Power Supply
• Adjustable Temperature Compensation
• Adjustable Modulation Current
• Complementary Output Reduces Supply Noise
• Programmable LED Prebias Voltage
• Available in 24-Pin Thin QFN or Die

• Multimode LED Transmitters
• Fast Ethernet/FDDI
• 155Mbps LAN ATM Transceivers
• ESCON Receivers
• SFP Transceivers