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TDA7566_06: 产品描述4x40W multifunction quad power amplifier with built-in diagnostics features; 文件大小316KB，共28页; 制造商ST(意法半导体); 官网地址http://www.st.com/

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TDA7566_06概述

4x40W multifunction quad power amplifier with built-in diagnostics features

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TDA7566

4x40W multifunction quad power amplifier

with built-in diagnostics features

Features

■

DMOS power output

High output power capability 4x25W/4Ω @

14.4V, 1KHZ, 10% THD, 4x40W max. power

Max. output power 4x60W/2Ω

Full I

C bus driving:

– St-by

– Independent front/rear soft play/mute

– Selectable gain 26dB - 12dB

– I

C bus digital diagnostics

Full fault protection

DC offset detection

Four independent short circuit protection

Clipping detector (1%/10%)

ESD protection

Thanks to the DMOS output stage the TDA7566

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 I

C bus.

The possibility to control the configuration and

behaviour of the device by means of the I

C bus

makes TDA7566 a very flexible machine.

Flexiwatt 25

■

Description

The TDA7566 is a new BCD technology QUAD

BRIDGE type of car radio amplifier in Flexiwatt25

package specially intended for car radio

applications.

Order codes

Part number

TDA7566

Package

Flexiwatt 25

Packing

Tube

December 2006

Rev 3

1/28

www.st.com

Contents

TDA7566

Contents

Block diagram and application & test circuit . . . . . . . . . . . . . . . . . . . . . 5

1.1

1.2

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Application and test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1

3.2

3.3

3.4

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Diagnostics functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.1

4.2

4.3

4.4

4.5

4.6

4.7

Turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Permanent diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Output DC offset detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

AC diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Multiple faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Faults availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

I2C Programming/reading sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

I2C Bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5.1

5.2

5.3

5.4

Data Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Start and Stop Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Byte Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Software specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Examples of bytes sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Package informations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2/28

List of figures

TDA7566

List of figures

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

Figure 15.

Figure 16.

Figure 17.

Figure 18.

Figure 19.

Figure 20.

Figure 21.

Figure 22.

Figure 23.

Figure 24.

Figure 25.

Figure 26.

Figure 27.

Figure 28.

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Application and test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Quiescent current vs. Supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Output power vs. supply voltage (4Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Output power vs. supply voltage (2Ω). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Distortion vs. output power (4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Distortion vs. output power (2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Distortion vs. frequency (4Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Distortion vs. frequency (2Ω) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Power Dissipation & Efficiency vs. Output Power (4W, SINE) . . . . . . . . . . . . . . . . . . . . . . 11

Power Dissipation vs. Average Ouput Power (Audio Program Simulation, 4W). . . . . . . . . 11

Power Dissipation vs. Average Ouput Power (Audio Program Simulation, 2W). . . . . . . . . 11

Turn - On diagnostic: working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

SVR and Output behaviour (CASE 1: without turn-on diagnostic) . . . . . . . . . . . . . . . . . . . 13

SVR and Output pin behaviour (CASE 2: with turn-on diagnostic) . . . . . . . . . . . . . . . . . . . 13

Thresholds for SHORT TO GND/V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Thresholds for SHORT ACROSS THE SPEAKER/OPEN SPEAKER . . . . . . . . . . . . . . . . 14

Thresholds for Line-Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Restart timing without Diagnostic Enable (Permanent) . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Restart timing with Diagnostic Enable (Permanent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Current detection: Load impedance magnitude |Z| Vs. output peak voltage of the sinus. . 16

Data Validity on the I2C BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Timing diagram on the I

C Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Timing acknowledge clock pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Flexiwatt25 Mechanical Data & Package Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

4/28

TDA7566_06

TDA7566_06概述

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