TGA4868
32 Gb/s Linear Transimpedance Amplifier with AGC
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
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).
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
Product Categories
Application Categories
| Bandwidth(GHz) | 28 |
| Differential Transimpedance Gain(ohm) | 250 to 4,800 |
| Differential Output Vpp(mV) | 200 to 900 |
| Equivalent Input Noise(pA/rtHz) | 24 |
| Voltage(V) | 3.3 |
| Current(mA) | 175 |
| RoHS | Yes |
| Lead Free | Yes |
| Halogen Free | Yes |
| ITAR Restricted | No |