June 2011

Doc ID 018920 Rev 1

1/15

AN3412

10 W +10 W dual BTL class-D audio amplifier demonstration board

based on the TDA7491P

Introduction

The STEVAL-CCA028V1 is a demonstration board designed for the TDA7491P dual BTL

class-D audio amplifier. This application note provides the board specifications and a quick-

start list for standalone operation. Also included are the schematic, printed circuit board

layout and bill of material.

Due to its high efficiency, the device assembled in the PSSO36 (slug-down) package is

capable of dissipating heat without any heatsink. Jumpers on the board allow configuring

the amplifier in order to verify all the features as single-ended or differential inputs, fixed gain

settings. Microswitches are also provided to enable the standby and mute functions.

The main features of the TDA7491P include:

Figure 1.

STEVAL-CCA028V1

www.st.com