MAX3795ETG

Laser Drivers Overview

The MAX3795ETG+T is a high-speed VCSEL driver designed for small-form-factor (SFF) and SFP fiber optic transmitters. It operates at data rates from 1Gbps to 4.25Gbps with a single 3.3V ±10% supply. Key electrical parameters include a modulation current range of 2mA to 15mA, bias current from 1mA to 15mA, 52ps transition time, and 8.4ps deterministic jitter. The device supports common-cathode and differential configurations.

Laser Drivers Feature Summary

• Integrates automatic power control to maintain average optical power across temperature variations
• Supports all SFF-8472 digital diagnostics for comprehensive monitoring
• Includes safety circuits compliant with SFF and SFP MSA standards
• Features optional peaking current capability to enhance VCSEL edge speed

Laser Drivers Applications

• Multirate SFP/SFF modules operating between 1Gbps and 4.25Gbps
• Gigabit Ethernet optical transmitters
• Fibre-Channel optical transmitters

Laser Drivers Procurement Notes

Verify component authenticity through authorized channels due to limited availability status. Confirm RoHS compliance and package integrity upon receipt. Cross-reference datasheet revisions to ensure functional compatibility with existing designs. Validate thermal performance within the specified -40°C to +85°C operating range during integration.

Laser Drivers Selection Notes

Select this driver for applications requiring multirate support up to 4.25Gbps in compact form factors. Ensure system design accommodates the 3.3V single supply requirement. Verify that the required modulation and bias current ranges align with the specific VCSEL characteristics. Consider the pin-compatible alternative if legacy board layouts necessitate migration from the MAX3740A.

Laser Drivers Part Context

This component belongs to the MAX3795 series of laser drivers manufactured by Analog Devices Inc./Maxim Integrated. It is specifically engineered for optical communication systems utilizing vertical-cavity surface-emitting lasers. The device replaces older generation drivers by offering integrated diagnostic features and improved jitter performance in a TQFN-EP-24 package.

Laser Drivers Replacement Considerations

The MAX3795 is pin-compatible with the MAX3740A. Designers migrating from the MAX3740A should verify software configuration differences regarding diagnostic registers and safety circuit thresholds before implementation.