TDA7379: AUDIO POWER AMPLIFIER

The TDA7379 is a new technology class AB audio processor amplifier able to work either in DUAL BRIDGE or QUAD SINGLE ENDED configuration.
The exclusive fully complementary structure of the output stage and the internally fixed gain guarantee the highest power performances with extremely reduced component count. The on board clip detector simpli- fies gain compression operation. The fault diagnostic makes it possible to detect mistakes during the set assembly and wiring in the equipment.

Features

HIGH OUTPUT POWER CAPABILITY
2 x 38W/4Ω @18V, 1KHz, 10%
4 x 11W/4Ω @18V, 1KHz, 10%
2 x 20W/8Ω @18V; 1KHz, 10%
4 x 13W/2Ω @15V, 1KHz, 10%
2 x 34W/8Ω @ 22V, 1kHz, 10%
MINIMUM EXTERNAL COMPONENTS COUNT:
– NO BOOTSTRAP CAPACITORS
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN (26dB BTL)
ST-BY FUNCTION (CMOS COMPATIBLE)
NO AUDIBLE POP DURING ST-BYOPERATIONS
DIAGNOSTIC FACILITIES
– CLIP DETECTOR
– OUT TO GND SHORT
– OUT TO VS SHORT
– SOFT SHORT AT TURN-ON
– THERMAL SHUTDOWN PROXIMITY

Protections

OUPUT AC/DC SHORT CIRCUIT
SOFT SHORT AT TURN-ON
OVERRATING CHIP TEMPERATURE WITHSOFT THERMAL LIMITER
FORTUITOUS OPEN GND
REVERSED BATTERY
ESD

Applications

Cable and Satellite Set-Top Boxes
TV and HDTV Sets
A / V Switchers
Personal Video Recorders (PVR)
Security and Surveillance
Video Distribution
Automotive (In-Cabin Entertainment)
8-Input, 6-Output Video Switch Matrix with Output Drivers, Input Clamp, and Bias Circuitry
4 X 13 - 2 X 38W AUDIO POWER AMPLIFIER
2 X 13 + 1 X 38W AUDIO POWER AMPLIFIER

PCB Thermal Layout Considerations

Understand the system power requirements and envi- ronmental conditions.
Maximize thermal performance of the PCB.
Consider using 70μm of copper for high-power designs.