NXP Semiconductors TDA8920 User manual

CONNECTION AND OPERATION ‘QUICK START’ GUIDE
Page 1of 2
TDA8920 / TDA8950
Audio Amplifier Module
Enigma Component Shop
www.enigma-shop.com
This document details connection instructions for the TDA8920/8950 amplifier modules. They are
intended for the hobbyist or home user and it is recommended that the user has some experience with
making basic electrical connections and knowledge of mains safety. Enigma Shop cannot be held
responsible for injury caused by careless use of this product. This module should not be used by
children.
Whenever making electrical connections to this module, please ensure that mains power is
disconnected and the energy stored in the module allowed to discharge for at least 5 minutes before
touching it. The board contains dangerous high voltages when AC power is present, which take some
time to dissipate even when the module is unpowered. Remember, MAINS VOLTAGES CAN KILL!!
The TDA8920/8950 modules can be used in four modes. Please see the diagram and follow the
connection instructions below:
Mode 1: Stereo balanced audio input
Pin 1 L+ Pin 5 R Gnd Pin 8 Spk L+ Pin 11 Spk R+
Pin 2 L - Pin 6 R - Pin 9 Spk L-
Pin 3 L Gnd Pin 7 R+ Pin 10 Spk R-
(Please note, R channel is run in out of phase to improve amplifier performance)

CONNECTION AND OPERATION ‘QUICK START’ GUIDE
Page 2of 2
TDA8920 / TDA8950
Audio Amplifier Module
Enigma Component Shop
www.enigma-shop.com
Mode 2: Stereo unbalanced audio input
Pin 1 L+ Pin 5 R Gnd Pin 8 Spk L+ Pin 11 Spk R+
Pin 2 L Gnd Pin 6 R Gnd Pin 9 Spk L-
Pin 3 L Gnd Pin 7 R+ Pin 10 Spk R-
(Please note, R channel is run out of phase to improve amplifier performance)
Mode 3: Bridge mono mode, balanced audio input
Pin 1 Signal + Pin 5 Gnd Pin 8 Spk + Pin 11 Not connected
Pin 2 Signal - Pin 6 Signal - Pin 9 Not connected
Pin 3 Gnd Pin 7 Signal + Pin 10 Spk -
Mode 4: Bridge mono mode, unbalanced audio input
Pin 1 Signal + Pin 5 Gnd Pin 8 Spk + Pin 11 Not connected
Pin 2 Gnd Pin 6 Gnd Pin 9 Not connected
Pin 3 Gnd Pin 7 Signal + Pin 10 Spk -
In all modes, taking pin 4 (Mute) to ground will disable amplifier and it will enter standby mode.
Although this module does not require forced cooling, it is recommended that it is housed in an
enclosure with some free airflow around the heatsink at the base. If the module is housed in a small
sealed enclosure the thermal protection may activate after some time. As with all electrical products
that generate heat, the life will be prolonged if the item is kept cool, therefore we recommend a small
fan if the item is being used continuously at high powers, or in bridge mode.
For further information, please see the manufacturer’s full instruction sheet downloadable from the
Enigma Shop product web page.
We sincerely hope you enjoy using our products.
Enigma Shop