This document describes the features and characteristics of the STEVAL-TDR029V1 RF power amplifier demonstration board based on the STAC2942B.
The STEVAL-TDRO29V1 is an RF broadband power amplifier demonstration board designed for FM broadcast radio transmitters operating in the 87.5 to 108 MHz band. It utilizes two STAC2942B N-channel MOS field-effect transistors to deliver a minimum output power of 700 W with a typical gain of 20 dB and 77% efficiency. The board features excellent thermal stability and is designed in cooperation with InnovAction S.r.l. in Italy.
The document provides detailed electrical specifications, including maximum ratings for input power (15 W) and output power (800 W), as well as electrical characteristics such as harmonic distortion and gain flatness. Additionally, it offers comprehensive mounting recommendations for the STAC2942B transistors, covering heat sink selection, surface preparation, thermal interface materials, and PCB considerations to ensure optimal performance and reliability.
| Frequency range | 87.5 - 108 MHz |
|---|---|
| Supply voltage | 48 V |
| Output power (typical) | 700 W |
| Gain (typical) | 20 dB |
| Efficiency (typical) | 77 % |
| Harmonic 2 (max) | -40 dBc |
| Harmonic 3 (max) | -45 dBc |
| Gain flatness (max) | +0.5 dB |
| Maximum input power | 15 W |
| Maximum output power | 800 W |
| Operating base plate temperature range | 0 to +70 °C |
| Maximum drain current | 22 A |
| Maximum power dissipation | 400 W |
The device operates over the band 87.5 to 108 MHz.
The typical output power is 700 W.
The board requires a supply voltage of 48 V.
The board uses 2x STAC2942B N-channel MOS field-effect transistors.