NT20045-QSOP

Overview

The NT20045 is a low-cost limiting amplifier designed for SONET, SDH, ESCON, and Fast Ethernet applications over optical fiber. It operates with a supply voltage range of 3.0V to 5.5V and supports data rates up to 200Mbps. The device provides a gain of 60dB with a bandwidth of 125MHz. It features an 80uV noise figure and requires a 3.3V or 5.0V supply.

Feature Summary

• Provides wideband post-amplification for optical signals
• Integrated limiting function for signal restoration
• Compatible with standard optical fiber transmission systems

Applications

• SONET/SDH networks
• Fast Ethernet over optical fiber
• ESCON applications

Procurement Notes

Verify the specific package variant against official Semtech documentation before ordering. Confirm that the QSOP package designation matches your board layout requirements. Ensure supply voltage levels align with the 3.0V to 5.5V operational range specified in the datasheet.

Selection Notes

Select this component for cost-sensitive optical interfaces requiring reliable signal conditioning at lower data rates. It serves as a suitable post-amplifier stage for receivers operating within the 200Mbps limit. Consider thermal management and power supply stability when integrating into the final design.

Part Context

Semtech offers a comprehensive portfolio of optical transceiver ICs and components for high-speed data transmission. The NT20045 belongs to the limiting amplifier category, supporting standards such as OC-3 and Fast Ethernet. These products are designed to simplify design processes and reduce costs for optical module manufacturers.

Replacement Considerations

NT20042 is a related limiting amplifier from the same manufacturer family.