NT20R67-WP

Overview

The NT20R67 is a low-cost, 3.3V to 5.0V CMOS PIN Transimpedance Amplifier (TIA) designed for optical fiber applications supporting data rates up to 200Mbps. It features automatic gain control (AGC) and provides more than 43dB of dynamic range. The device offers a gain of 63kΩ with a bandwidth of 0.165GHz and operates on a 3.3V or 5.0V supply. With an input noise of 11nA, it is optimized for OC-3 and Fast Ethernet environments.

Feature Summary

• Integrates automatic gain control to maintain signal integrity across varying optical input levels
• Provides high dynamic range exceeding 43dB for robust performance in diverse link conditions
• Utilizes low-cost CMOS technology compatible with standard 3.3V and 5.0V power supplies

Applications

• OC-3 optical transmission systems
• Fast Ethernet over optical fiber
• Low-speed optical fiber transceivers

Procurement Notes

Verify the specific package type and ordering suffix against the official Semtech datasheet before finalizing procurement. Confirm that the required operating voltage aligns with your system's 3.3V or 5.0V rail specifications. Ensure compatibility with your target optical receiver architecture given the 63kΩ gain and 0.165GHz bandwidth parameters.

Selection Notes

Select this component for designs requiring cost-effective signal conditioning at speeds up to 200Mbps. The integrated AGC simplifies design by accommodating wide variations in received optical power without external adjustment circuits. It serves as a suitable alternative to higher-speed TIAs when bandwidth requirements are limited to legacy or lower-rate standards like OC-3.

Part Context

This TIA belongs to Semtech’s portfolio of analog front-end components for optical communications. It complements laser drivers and limiting amplifiers to form complete receiver chains. The device supports legacy and entry-level networking standards, bridging the gap between basic LED-based links and higher-speed DFB/VCSEL solutions.

Replacement Considerations

The NT20067 is listed as a related part number within the same product family. Verify pinout and parameter differences before substitution.