GN1055CW-CHIP

Overview

The GN1055CW-CHIP is a fully integrated silicon germanium (SiGe) BiCMOS transimpedance amplifier designed for wideband, low-noise pre-amplification of currents from PIN photodiodes or APDs. It features differential outputs and operates on a single +3.3 V power supply with typical power dissipation of 145 mW. The device provides a transimpedance gain of 4 kΩ into a 100Ω load and achieves an upper bandwidth of 12 GHz (-3dB). It supports OC-192/STM-64 rates up to 11.3 Gb/s NRZ data. Key functional parameters include user-adjustable input slicing levels and RSSI capabilities. The operating junction temperature range spans -40°C to +125°C.

Feature Summary

• Provides wideband, low-noise pre-amplification for PIN photodiode or APD current signals
• Features differential outputs with minimal external component requirements
• Includes user-adjustable input slicing level and Receive Signal Strength Indicator (RSSI)
• Operates at high-speed NRZ rates up to 11.3 Gb/s

Applications

• SONET/SDH-based transmission systems
• OC-192 fibre optic modules and line termination
• Test equipment and modules
• Serial data systems up to 11.3 Gb/s

Procurement Notes

Verify the specific ordering code GN1055CW-CHIP against official Semtech documentation to confirm package type and compliance status. Ensure that the waffle pack configuration matches system integration requirements. Confirm RoHS and lead-free specifications align with manufacturing standards. Validate that the single +3.3V supply requirement fits the target circuit design constraints before procurement.

Selection Notes

Select this component for applications requiring high-bandwidth amplification of optical detector currents without complex external biasing networks. The SiGe BiCMOS technology offers low noise performance suitable for sensitive optical receivers. Consider the 12 GHz bandwidth and 11.3 Gb/s operational limit when designing for SONET/SDH or high-speed serial interfaces. The adjustable slicing level allows for optimization across varying signal conditions.

Part Context

The GN1055 belongs to the Gennum product line, now part of Semtech's signal integrity portfolio. It is specifically engineered as a limiting transimpedance amplifier for optical communication systems. The device integrates necessary amplification stages within a compact form factor, reducing the bill of materials by eliminating most external passive components except for supply decoupling.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.