TGA4868
32 Gb/s Linear Transimpedance Amplifier with AGC
Qorvo's TGA4868 is a state of the art TIA with integrated AGC designed for coherent DP-QPSK receivers with baud rates up to 128Gbps. It features a very low total harmonic distortion which is not only crucial for DP-QPSK, but also enables higher-level QAM applications. In addition, the TGA4868 features two compensating circuits that allow it to handle large DC input currents as well as large offsets between these currents. This is, among others, important for colorless applications.
The TGA4868 is manufactured in a reliable highspeed SiGe process that combines excellent performance together with cost-effectiveness. The TGA4868 complies with the OIF intradyne receiver MSA. The TGA4868 is a dual TIA and thus contains two TIA/AGC circuits on each die. In addition to the many features defined in the OIF MSA, the TGA4868, for example, also includes a versatile bandwidth tuning function and PLD or RSSI (switchable).
Key Features
- Excellent linearity and low total harmonic distortion of <1% for Vout,se<350mVpp
- Able to handle large DC input currents
- Tunable frequency response of 24-32 GHz
- Large dynamic range of 26dB typical
- Manual gain or AGC mode selectable
- Multiple amplifier stages to achieve high gain
- Output shutdown function
- Peak level detection (PLD) or RSSI
- Dual TIA die with +3.3V single supply voltage
- Compliant with OIF intradyne receiver MSA
- SiGe technology with ƒT/ƒmax of 170/250 GHz
Typical Applications
- 100 Gb/s DP-QPSK (Dual Polarization QPSK)
- TIA with AGC for long-haul or metro optical receiver modules
- Coherent systems with a baud rate of up to 128 Gbps
Parameters
Need more support?
At Qorvo, our customers are a core part of what we do, and we want every experience you have with us to be as reliable as our products. If you have a question or if something isn't working the way you expect, please let us know.
Forum
Engage with the Qorvo community, ask technical questions and share insights.
Support
Get technical, application or customer support plus updates on supply chain and FAQs.
Sales
Connect with our sales team to gain tailored solutions, expert guidance and access to the latest technologies.
