GN1158-INE3

Overview

The GN1158-INE3 is a multi-rate transceiver IC designed for Short Reach (SR) Ethernet and Fibre Channel applications, supporting data rates from 1.0 Gbps to 11.3 Gbps. It integrates a VCSEL laser driver with a maximum bias current of 15 mA and a limiting amplifier receiver with a sensitivity of 5 mVppd at 11.317 Gb/s. The device features integrated closed-loop automatic power control (APC), programmable Tx eye diagram shaping, and digital diagnostics via a two-wire serial interface. It operates on 3.3 V or 2.5 V CMOS inputs/outputs and is housed in a 28-pin QFN package measuring 4 mm x 4 mm.

Feature Summary

• Integrates a VCSEL laser driver and limiting amplifier for short-reach optical communication
• Includes closed-loop automatic power control to compensate for laser aging and temperature variations
• Supports programmable transmit/receive equalization and signal loss detection
• Provides comprehensive digital diagnostics and monitoring without external microprocessors

Applications

• 1 Gbps and 10 Gbps Ethernet links
• 10 Gbps Fibre Channel connections
• Short reach optical transceivers

Procurement Notes

Verify the specific ordering code suffix against official Semtech documentation to ensure correct packaging and material compliance. Confirm that the INE3 variant matches the required thermal and mechanical specifications for the target PCB layout. Cross-reference the part number with the latest datasheet revision to validate pinout compatibility and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component for designs requiring a single-chip solution for SR optical interfaces up to 11.3 Gbps. It is suitable for applications prioritizing low power consumption and integrated laser safety features. Consider its compatibility with standard VCSEL sources and the need for external decoupling only. Evaluate the 28-pin QFN footprint against available board space constraints.

Part Context

The GN1158 belongs to Semtech’s portfolio of high-performance laser drivers and transceivers utilizing SiGe BiCMOS and CMOS technologies. This family targets data center and access network markets, offering solutions for NRZ signaling. The GN1158 specifically addresses the short-reach segment, complementing other models like the GN1157 (LR) and GN1159 (LR with diagnostics) in the product line.

Replacement Considerations

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