The STEVAL-TDR004V1 is an RF broadband power amplifier from ST company. It features a wide frequency range (1.6-54MHz), high output power (400W), high efficiency (57%-76%) and low input power (10W max.).
The STEVAL-TDR004V1 is an RF broadband power amplifier demonstration board 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 that supports both Class B and Class AB operation modes. The board was designed in cooperation with Specific RF Devices (Germany).
| Frequency range | 1.6 - 54 MHz |
|---|---|
| Supply voltage | 48 V |
| Output power | 400 W (typ.) |
| Input power | 10 W max. |
| Efficiency | 57 % - 76 % |
| IMD | < -26 dBc |
| Load mismatch | 3:1 (all phases) |
The board supports Class B and Class AB operation modes.
The bias point is selected using a 'BIAS' control port; leaving it open sets Class B (~100 mA), while connecting it to ground sets Class AB (~900 mA).
The maximum input power rating is 16 W and the maximum output power rating is 500 W.