The document describes an RF broadband power amplifier using 2x SD2933 N-channel enhancement-mode lateral MOSFETs. It has excellent thermal stability and operates over the frequency range of 1.6 to 54 MHz. The amplifier has a supply voltage of 48V, typical output power of 400W, and maximum input power of 10W. The efficiency is between 57% and 76%. The IMD at 300WPEP is less than -26dBc and the load mismatch is 3:1 for all phases.
The DB-2933-54 is an RF broadband power amplifier designed for linear or nonlinear operation over the 1.6 to 54 MHz frequency band. It utilizes two SD2933 N-channel enhancement-mode lateral MOSFETs and features a temperature compensating biasing circuit supporting Class B and Class AB operation. The device is designed in cooperation with Specific RF Devices.
| Frequency range | 1.6 - 54 MHz |
|---|---|
| Supply voltage | 48V |
| Output power | 400W typ. |
| Input power | 10W max. |
| Efficiency | 57% - 76% |
| IMD at 300W PEP | < -26dBc |
| Load mismatch | 3:1 all phases |
The maximum drain supply voltage is 50V.
The maximum power dissipation is 400W.
The bias point is selected via a control port named 'BIAS'.