Low-cost, single-chip, 20W wide-band low distortion mono/stereo amplified module

This single chip stereo amplifier module delivers a maximum power of 11 Watts per channel into 2 ohms, or 20 Watts into 4 ohms in mono full-bridge mode. It will also drive all higher impedance (such as 8 ohm) loads at reduced power levels. Using the STA7360 Stereo/Bridge amplifier i.c. and using very few external components, this easy-build project should fall well within most constructors’ budgets.

The circuit board has been designed to allow operation in stereo or mono (bridge) mode – selectable by a wire link. Operating voltage can be between 8V and 18V so the circuit is perfect for use in car systems. The power output ratings are continuous average power and assume a suitable heatsink is fitted.