SY88422LMG

Overview

The SY88422LMG-TR is a single 3.3V supply laser driver designed for telecom and datacom applications operating up to 4.25Gbps. It delivers a modulation current of up to 90mA and a bias current of up to 100mA, with a typical power supply current of 35mA. The device is housed in a small form factor 16-pin QFN package measuring 3mm x 3mm.

Feature Summary

• Integrated bias and monitor functions for precise laser control
• Small form factor design suitable for space-constrained modules
• Single 3.3V power supply operation

Applications

• Multi-rate LAN and MAN applications up to 4.25Gbps
• Fibre Channel (FC) systems
• GbE and SONET/SDH SFF modules
• LX-4 optical modules

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and tape/reel specifications. Ensure compatibility with RoHS standards and moisture sensitivity levels as defined in the datasheet. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and technical compliance before procurement.

Selection Notes

Select this component for high-speed optical interconnects requiring compact integration. The 3.3V supply simplifies power management compared to higher voltage alternatives. Consider the 16-pin QFN footprint for PCB layout constraints. Verify that the 90mA modulation current meets the requirements of the target laser diode.

Part Context

This device belongs to the SY88422 series of laser drivers from Microchip Technology, formerly Micrel. It is engineered for high-performance optical transmission in networking equipment. The series supports multi-rate protocols, making it versatile for various fiber optic communication standards in enterprise and carrier networks.

Replacement Considerations

Check for direct pin-compatible substitutes within the same product family. Verify electrical parameters such as modulation current limits and supply voltage requirements. Ensure the alternative component supports the required 4.25Gbps data rate and maintains the same 16-pin QFN package dimensions.