January 2010

Doc ID 16978 Rev 1

1/7

UM0890

User manual

2-stage RF power amplifier with LPF based on the

PD85006L-E and STAP85050 RF power transistors

Introduction

This user manual briefly describes the function and use of the STEVAL-TDR011V1

demonstration board.

The board is a two-stage 50 W RF power amplifier which includes an output LPF (low-pass

filter) for harmonics rejection. It also features power detection and a temperature sensor.

The main purpose of the board is to demonstrate the functioning and performance of the

PD85006L-E and the STAP85050 devices from the LdmoST plastic family of RF power

transistors.

The application is specifically designed for 2-way analog and digital mobile radios.

Figure 1.

STEVAL-TDR011V1 demonstration board

www.st.com