NT20R67-GRP6

Overview

The NT20R67 is a low-cost, 3.3V to 5.0V CMOS PIN Transimpedance Amplifier (TIA) featuring automatic gain control and a dynamic range exceeding 43dB. Designed for optical fiber applications with data rates up to 200Mbps, it provides a gain of 63kΩ and a bandwidth of 0.165GHz. The component operates on a 3.3V or 5.0V supply with an input noise of 11nA. It is specifically targeted at OC-3 and Fast Ethernet optical transmission systems.

Feature Summary

• Integrates automatic gain control functionality to maintain signal integrity across varying input levels.
• Provides high dynamic range exceeding 43dB for robust performance in optical fiber links.
• Features low-cost CMOS construction 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 current Semtech documentation before finalizing procurement plans. Confirm that the component meets all necessary environmental compliance standards required for your target market. Ensure design-in compatibility with existing OC-3 and Fast Ethernet infrastructure requirements.

Selection Notes

Select this TIA when designing cost-sensitive optical interfaces operating at speeds up to 200Mbps. It is suitable for applications requiring a wide dynamic range and automatic gain control without the complexity of higher-speed limiting amplifiers. Consider its compatibility with standard 3.3V and 5.0V logic levels for seamless integration into legacy or entry-level network equipment.

Part Context

Semtech offers a comprehensive portfolio of optical transceiver ICs and components serving various networking standards. The NT20R67 belongs to their line of Transimpedance Amplifiers (TIAs), which provide wideband, low-noise pre-amplification for signals from PIN photodiodes. This product supports the company's goal of delivering reliable solutions for ITU/IEEE-based transmission systems and PON applications.

Replacement Considerations

The NT20067 is listed as a similar 155Mbps AGC TIA within the same selector guide. Verify pinout compatibility and specific gain/bandwidth requirements before substituting, as differences in gain values may impact system performance in OC-3 or Fast Ethernet designs.