MAX3656ETG-T

Laser Drivers Overview

The MAX3656ETG-T is a burst-mode laser driver manufactured by Analog Devices Inc./Maxim Integrated, designed for optical transmitters operating at data rates from 155 Mbps to 2.5 Gbps. It accepts PECL or CML data inputs and provides programmable bias current (1 mA to 70 mA) and modulation current (10 mA to 85 mA). The device features digital automatic power control (APC) with a monitor diode input, eliminating the need for an external APC capacitor. It operates on a single +3.0 V to +3.63 V supply, draws 40 mA typical supply current, and dissipates 1.805 W power. Packaged in a 24-pin TQFN-EP-24 surface-mount package, it supports burst enable/disable delays under 2 ns.

Laser Drivers Feature Summary

• Supports multi-rate operation from 155 Mbps to 2.5 Gbps with burst mode capabilities
• Integrates digital automatic average power control loop using a monitor diode
• Accepts PECL or CML differential data inputs for direct coupling
• Provides programmable bias and modulation currents via external resistors

Laser Drivers Applications

• Burst-mode optical transmitters
• SONET/SDH OC-3 to OC-48 interfaces
• Ethernet over fiber links
• Point-to-point optical communication systems

Laser Drivers Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and check for obsolescence notices, as this part may be discontinued. Ensure proper handling of ESD-sensitive components during storage and assembly. Validate that the specific suffix matches design requirements without assuming functional changes based solely on packaging variations.

Laser Drivers Selection Notes

Select this driver for applications requiring high-speed burst-mode transmission up to 2.5 Gbps. Consider the single-supply operation and integrated APC functionality when designing compact optical modules. Evaluate thermal performance given the power dissipation characteristics in the TQFN package. Ensure compatibility with PECL or CML logic levels for data input signals.

Laser Drivers Part Context

The MAX3656 belongs to Maxim Integrated's family of high-speed laser drivers optimized for fiber optic communications. It complements other optical interface solutions by providing robust drive capabilities for laser diodes in demanding network environments. The device addresses the need for precise power control and fast turn-on/turn-off times in burst-mode systems.

Laser Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify if newer generations from the manufacturer offer equivalent specifications before selecting alternatives.