MAX3646ETG-T

Laser Drivers Overview

The MAX3646ETG-T is a +3.3V laser driver designed for multirate transceiver modules operating at data rates from 155Mbps to 622Mbps. It features automatic power control (APC), modulation compensation, and on-chip temperature compensation. The device supports DC-coupled lasers to reduce component count. Key electrical parameters include a supply voltage of 3.3V, power-supply current of 47mA, modulation current of 85mA, and bias current of 100mA. It operates within a temperature range of -40°C to +85°C and is housed in a 24-TQFN package.

Laser Drivers Feature Summary

• Supports automatic power control for stable laser output
• Includes modulation and temperature compensation circuits
• Provides enable control and laser safety features

Laser Drivers Applications

• Multirate OC-3 to OC-12 FEC Transceivers
• 125Mbps Ethernet SFP Transceivers
• GBIC Transceivers
• 1 x 9 Transceivers

Laser Drivers Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging versus tube variants. Confirm RoHS compliance status as '+'. Check availability status as this part may be discontinued or limited. Ensure the supplier provides official datasheets matching the Analog Devices/Maxim Integrated specifications.

Laser Drivers Selection Notes

Select this component for applications requiring integrated APC and compensation in a single +3.3V supply design. Consider the 24-TQFN package size for space-constrained modules. Verify compatibility with DC-coupled laser diodes. Evaluate thermal performance within the specified operating temperature range.

Laser Drivers Part Context

The MAX3646 series belongs to Maxim Integrated's family of laser drivers for optical transceivers. It is often paired with receivers like the MAX3647. The ETG variant specifies the TQFN package and extended temperature range. This part is distinct from higher-speed drivers in the MAX36xx series.

Laser Drivers Replacement Considerations

Check for direct pin-compatible replacements such as the MAX3646ETG. Verify if newer generations offer improved performance or availability. Ensure substitute parts maintain the same data rate support and compensation features.