MAX3646ETG+

Overview

The MAX3646ETG+ is a laser driver IC designed for SFF and SFP optical transceivers. It supports data rates from 155 Mb/s to 622 Mb/s. The device operates on a single 3.3 V supply with a typical operating current of 47 mA. It features an integrated bias current source capable of delivering up to 100 mA and a modulation current capability of 85 mA. The component is housed in a 24-pin TQFN package with exposed pad, suitable for surface mount installation.

Feature Summary

• Integrated bias current source for laser diode operation
• Supports low-speed optical transmitter applications up to 622 Mbps
• Designed for use in SFF and SFP form factor modules

Applications

• SFF optical transceiver modules
• SFP optical transceiver modules
• Low-speed optical transmission systems

Procurement Notes

Verify the exact suffix designation (+) against official Analog Devices documentation to confirm RoHS compliance status. Confirm availability through authorized distributors as supply may be limited or subject to specific ordering constraints. Ensure the package type matches the required PCB footprint specifications.

Selection Notes

Select this component for designs requiring a dedicated laser driver for 155 Mbps to 622 Mbps links. Verify that the 3.3 V supply voltage aligns with the system power architecture. Consider the thermal performance of the TQFN-24 package relative to the expected power dissipation in the target application environment.

Part Context

This part belongs to the MAX3646 series of laser drivers manufactured by Analog Devices Inc./Maxim Integrated. It is specifically engineered for fiber optic communication interfaces. The device integrates necessary drive circuitry to control laser diodes directly within compact optical module assemblies.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided reference material.