NXP Semiconductors TDA8920 Manuale utente

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

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