TDA7383 35W Car Quad Audio Amplifier Circuit

The following a 4 x 35 watts channels/quad audio power amplifier circuit based IC TDA7383. The amplifier circuit is designed specifically suitable for car audio system applications. With a fairly large output power per channel, low distortion and low output noise features. Heatsink should be installed on the power IC to avoid excessive heat. There are very simple and easy to build cos only a few additional components outside the IC power.

diagram 4 x 35W Car Audio Amplifier TDA7383

IC TDA7383 is a new technology class AB Audio Power Amplifier in Flexiwatt 25 package designed for high end car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7383 allows a rail to rail output voltage swing with no need of bootstrap capacitors. The extremely reduced components count allows very compact sets. The on-board clipping detector simplifies gain compression operations. The fault diagnostics makes it possible to detect mistakes during Car- Radio assembly and wiring in the car.

Absolute Maximum Ratings of IC TDA7383

Operating Supply Voltage : 18 V
DC Supply Voltage : 28 V
Peak Supply Voltage (t = 50ms) : 50 V
Output Peak Current Repetitive (Duty Cycle 10% at f = 10Hz): 4.5 A
Output Peak Current Non Repetitive (t = 100µs) : 5.5 A
Power dissipation, (Tcase = 70°C) : 80 W
Junction Temperature : 150 °C
Storage Temperature : – 55 to 150 °C

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4 x 50 W multifunction quad power amplifier with built in diagnostics feature

Features:

■ Multipower BCD technology

■ MOSFET output power stage

■ DMOS power output

■ New high efficiency (class SB)

■ High output power capability 4 x 28 W / 4  @ 

14.4 V, 1 kHz, 10 % THD, 4 x 50 W max power 

■ Max. output power 4 x 72 W / 2 

■ Full I2C bus driving:

– Standby

– Independent front/rear soft play/mute

– Selectable gain 30 dB / 16 dB (for low noise 

line output function)

– High efficiency enable/disable

– I2C bus digital diagnostics (including DC 

and AC load detection)

■ Full fault protection

■ DC offset detection

■ Four independent short circuit protection

■ Clipping detector pin with selectable threshold 

(2 % / 10 %)

■ Standby/mute pin

■ Linear thermal shutdown with multiple thermal 

warning

■ ESD protection

Description:

The TDA7563B is a new BCD technology quad bridge type of car radio amplifier in Flexiwatt27 & PowerSO36 packages specially intended for car radio applications. Thanks to the DMOS output stage the TDA7563B has a very low distortion allowing a clear powerful sound. Among the features, its superior efficiency performance coming from the internal exclusive structure, makes it the most suitable device to simplify the thermal management in high power sets. The dissipated output power under average listening condition is in fact reduced up to 50 % when compared to the level provided by conventional class AB solutions.

This device is equipped with a full diagnostics array that communicates the status of each  speaker through the I2C bus.

Circuit Diagram:

4 x 50 W multifunction quad power amplifier  with built-in diagnostics feature

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Multifunction quad power amplifier with built in diagnostics features

Features:

Multipower BCD technology

DMOS power output

High output power capability 4 x 25 W / 4  @ 

14.4 V, 1 kHz, 10 % THD, 4 x 35 W EIAJ

Max. output power 4 x 60 W / 2 

Full I2C bus driving:

Standby

Independent front/rear soft play/mute

Selectable gain 26 dB - 12 dB (for low noise line output function)

I2C bus digital diagnostics

Full fault protection

DC offset detection

Four independent short circuit protection

Clipping detector

ESD protection

Description:

The TDA7561 is a BCD technology quad bridge type of car radio amplifier in Flexiwatt25 package specially intended for car radio applications. Thanks to the DMOS output stage the TDA7561  has a very low distortion allowing a clear powerful  sound. This device is equipped with a full diagnostics array that communicates the status of each  speaker through the I2C bus.The possibility to control the configuration and behaviour of the  device by means of the I2C bus makes TDA7561 a very flexible machine.

Circuit Diagram:

Multifunction quad power amplifier with built-in diagnostics features

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Quad SVC Subwoofer Wiring

Parallel SVC Subwoofer Wiring:

* Four 2 ohm SVC subwoofers = 0.5 ohm amplifier load
* Four 4 ohm SVC subwoofers = 1 ohm amplifier load
* Four 8 ohm SVC subwoofers = 2 ohm amplifier load

Series SVC Subwoofer Wiring:

* Four 1 ohm SVC subwoofers = 4 ohm amplifier load
* Four 2 ohm SVC subwoofers = 8 ohm amplifier load
* Four 4 ohm SVC subwoofers = 16 ohm amplifier load

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