NT20067-PR

Overview

The NT20067 is a 155Mbps Automatic Gain Control (AGC) Transimpedance Amplifier (TIA) designed for optical fiber applications. It operates with a supply voltage of 3.3V or 5.0V and provides a gain of 23kΩ with a bandwidth of 0.165GHz. The device features an input noise current of 11nA, making it suitable for OC-3 and Fast Ethernet systems.

Feature Summary

• Integrates automatic gain control functionality to maintain signal integrity across varying input levels.
• Provides wideband, low-noise pre-amplification of current signals from PIN photodiodes.
• Features fully integrated on-chip decoupling to support low-cost designs and optimal performance.

Applications

• OC-3 optical transmission systems
• Fast Ethernet over optical fiber
• Telecom Fiber transceiver modules

Procurement Notes

Verify the specific package type and ordering suffix against the official Semtech datasheet before procurement. Confirm that the 3.3V/5.0V supply requirement aligns with your system design. Ensure compatibility with standard PIN photodiodes used in OC-3 and Fast Ethernet applications.

Selection Notes

Select this component when designing optical receivers for 155Mbps data rates requiring AGC capabilities. It is appropriate for cost-sensitive applications where low noise and wide dynamic range are necessary. Compare its 23kΩ gain and 11nA noise specifications against other TIAs if higher sensitivity or different bandwidths are required.

Part Context

This TIA belongs to Semtech's portfolio of high-performance optical communication components. It complements laser drivers and limiting amplifiers within the company's broader ecosystem for building complete optical transceiver solutions for telecommunications and datacom networks.

Replacement Considerations

The NT20R67 is listed as a similar AGC TIA with comparable specifications but offers a higher gain of 63kΩ. Verify pin compatibility and circuit adjustments if substituting between these two models.