Features
- Quad-channel 128Gbaud linear TIA with integrated SPI or analog interface
- 50Ω to 2,300Ω typical differential gain
- > 30dB dynamic range
- > 75GHz adjustable 3dB bandwidth
- Automatic and manual gain control options, output voltage control, peak detection, RSSI and input current monitor, and shutdown functionalities
- Low total harmonic distortion (THD), low crosstalk, and low-power consumption
- Output amplitude clipping to prevent from generating excess output has been implemented and the clipping level can be set through serial peripheral interface (SPI)
RG8G31420 Block Diagram
Description
The RG8G31420 is a 128Gbaud linear transimpedance amplifier (TIA) chip that integrates four lanes of TIAs for XI, XQ, YI, and YQ channels. It has a digital interface circuitry for DC controls on a single die for 800G and beyond coherent applications. The TIA electrical characteristics, functionality, and physical dimensions are designed for optical subassemblies such as micro‑ICR and IC‑TROSA in small‑form‑factor (SFF) integrated optical modules.
Parameters
| Attributes | Value |
|---|---|
| Function | Linear TIA |
| Data Rate Max (Gbps) | 128 |
| Channels (#) | 4 |
Package Options
| Pkg. Type |
|---|
| WAFER |
Product Comparison
Applications
- 800G and beyond coherent systems with 128Gbaud higher-order QAM modulation format
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