MAX3710ETG+T

Overview

The MAX3710ETG+T is a 125Mbps to 2.5Gbps integrated limiting amplifier and burst mode laser driver designed for GPON/EPON ONU applications. It operates on a 2.97V to 3.63V supply with typical current of 110mA at 2.5Gbps. The device features a low-noise receiver with 1.3mVP-P sensitivity, dual-loop power control (APC and ERC), and a 3-wire digital interface. Packaged in a 4mm x 4mm 24-pin TQFN, it supports LVDS, LVPECL, and CML I/Os across a -40°C to +95°C temperature range.

Feature Summary

• Integrates APC and ERC loops to eliminate the need for temperature lookup tables controlling modulation current.
• Features a low-noise limiting amplifier with adjustable signal detect and loss-of-signal thresholds.
• Includes an auto-calibration mode to simplify fiber optic module manufacturing.
• Provides a 3-wire digital interface for real-time parameter setting and status monitoring.

Applications

• GPON/EPON Optical Network Unit modules
• BOSA On-Board implementations
• Direct integration on ONU boards

Procurement Notes

Verify the specific suffix ETG+T against official documentation to confirm package type and RoHS compliance. Ensure the ordering information matches the exact part number variant required for your design. Cross-reference the datasheet revision date to confirm all electrical characteristics are current. Confirm thermal requirements for the TQFN package during procurement planning.

Selection Notes

Select this component for designs requiring high integration of limiting amplification and laser driving functions. It is suitable for applications needing programmable output levels and slew-rate adjustment for EPON compatibility. Consider the 3-wire interface requirements for controller selection. Evaluate the exposed pad thermal management needs for the TQFN package in dense layouts.

Part Context

This device belongs to Maxim Integrated's portfolio of optical transceiver components. It serves as a complete Physical Medium Dependent solution for passive optical networks. The integration reduces system size and component count compared to discrete solutions. It is designed to work with standard laser diodes and monitor photodiodes in cost-sensitive ONU architectures.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

FAQ

How does the MAX3710 handle extinction ratio control?

It includes an integrated Extinction Ratio Control (ERC) loop that eliminates the need for temperature lookup tables by automatically controlling the modulation current.

What input signal formats are supported?

The device supports LVDS, LVPECL, and CML compatible high-speed inputs for both the transmitter and receiver sections.

Can the device operate without closed-loop control?

Yes, the MDIN pin can be left open for open-loop operation, although closed-loop provides better performance stability.