GN1032W-CHIP

Overview

The GN1032W-CHIP is a fully integrated silicon germanium transimpedance amplifier designed for wideband, low-noise pre-amplification of signal currents from photodetectors. It features differential outputs and an automatic gain control mechanism to increase dynamic range, accommodating input signals up to 2.6 mA peak. The device operates on a single +3.3 V power supply with typical power dissipation of 145 mW. Key electrical parameters include an input noise current of 250 nA rms, a transimpedance gain of 3.6 kΩ into a 100 Ω differential load, and a -3 dB bandwidth of 2.05 GHz. It supports data rates ranging from 155 Mb/s to 2.5 Gb/s and functions within an operating junction temperature range of -40°C to +125°C.

Feature Summary

• Incorporates an automatic gain control mechanism to enhance dynamic range and accommodate high peak input signals.
• Provides wideband, low-noise pre-amplification specifically optimized for signal currents derived from photodetectors.
• Features differential outputs with a 100 Ω impedance configuration for direct interfacing.

Applications

• SONET/SDH-based transmission systems
• OC-48 fibre optic modules and line termination
• ATM over SONET/SDH networks
• Gigabit Ethernet interfaces
• 2x Fibre Channel connections

Procurement Notes

Verify the specific ordering suffix when sourcing components. The GN1032W-CHIP designation corresponds to the waffle pack packaging format containing 400 pieces. Ensure compatibility with the required supply voltage and thermal management specifications for the intended application environment before finalizing procurement.

Selection Notes

Select this component for applications requiring a fully integrated solution for photodetector signal amplification without complex external circuitry. The inclusion of automatic gain control makes it suitable for scenarios with varying signal strengths. Confirm that the 2.05 GHz bandwidth and 2.5 Gb/s maximum data rate align with the system's speed requirements.

Part Context

The GN1032W-CHIP belongs to the GN1032 family of transimpedance amplifiers manufactured by Semtech Corporation (formerly Gennum). This product line focuses on providing high-performance analog solutions for optical communication systems. The device represents a specialized silicon germanium technology designed to meet the stringent noise and bandwidth demands of high-speed fiber optic networking standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical parameter compatibility if considering alternative transimpedance amplifiers from other manufacturers for the same application.

FAQ

What is the only external circuitry required for the GN1032W?

A decoupling capacitor on the power supply is the only external circuitry required for operation.

How does the automatic gain control benefit the GN1032W?

The automatic gain control mechanism increases the dynamic range, allowing the device to handle input signals up to 2.6 mA peak.