tda7393.pdf

TDA7393

2 x 30W DUAL BRIDGE CAR RADIO AMPLIFIER

PRODUCT PREVIEW

HIGH OUTPUT POWER CAPABILITY:

2 x 30W max./4 W @ 13.2V, 1KHz

2 x 22W typ./4 W @ 14.4V, 1KHz, 10%

2 x 19W typ./4 W @ 13.2V, 1KHz, 10%

2 x 28W typ./2 W @ 14.4V, 1KHz, 10%

2 x 25W typ./2 W @ 13.2V, 1KHz, 10%

LOW DISTORTION

LOW OUTPUT NOISE

ST-BY FUNCTION

MUTE FUNCTION

AUTO-MUTE AT MIN. SUPPLY VOLTAGE

DETECTION

LOW EXTERNAL COMPONENT COUNT

– INTERNALLY FIXED GAIN (32dB)

– NO EXTERNAL COMPENSATION

– NO BOOTSTRAP CAPACITORS

ADDITIONAL MONO INPUT

PROTECTIONS:

OUTPUT AC/DC SHORT CIRCUIT TO GND

AND TO V S

VERY INDUCTIVE LOADS

OVERRATING CHIP TEMPERATURE WITH

SOFT THERMAL LIMITER

LOAD DUMP VOLTAGE

MULTIW ATT15

ORDERING NUMBER: TDA7393

FORTUITOUS OPEN GND

REVERSE BATTERY

ESD PROTECTION

DESCRIPTION

The TDA7393 is a new technology class AB

Audio Power Amplifier in Multiwatt15 package de-

signed for high end car radio applications. Thanks

to the fully complementary PNP/NPN output con-

figuration the high power performances of the

TDA7393 are obtained without bootstrap capaci-

tors. The extremely reduced components count

allows very compact sets.

BLOCK DIAGRAM

April 1995

1/9

This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

TDA7393

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

V CC

Operating Supply Voltage

V CC (DC)

DC Supply Voltage

V CC (pk)

Peak Supply Voltage (t = 50ms)

I O

Output Peak Current:

Repetitive (Duty Cycle 10% at f = 10Hz)

Non Repetitive (t = 100

4.5

5.5

P tot

Power dissipation, Tcase = 75

C (see derating curve)

T j

Junction Temperature

150

T op

Operating Ambient Temperature

– 40 to 85

T stg

Storage Temperature

– 55 to 150

PIN CONNECTION (Top view)

THERMAL DATA

Symbol

Parameter

Value

Unit

R th j-case

Thermal Resistance Junction to Case

Max.

1.5

C/W

2/9

TDA7393

ELECTRICAL CHARACTERISTICS (V S = 13.2V; f = 1KHz; R g = 600 W ;R L =4 W ;T amb =25 ° C;

Refer to the application circuit, unless otherwise specified.)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

I q1

Quiescent Current

180

V OS

Output Offset Voltage

150

G v

Voltage Gain

30.5

33.5

P o

Output Power

THD = 10%; V S = 14.4V

THD = 10%

THD = 1%

THD = 10%; R L =2

THD = 10%; V S = 14.4V;

R L =2

P o max

Max. Output Power

EIAJ RULES; V S = 13.7V

THD

Distortion

P o = 0.1 to 8W

0.08

0.3

e No

Output Noise

Bw = 20Hz to 20KHz

0.3

mVrms

SVR

Supply Voltage Rejection

f = 100Hz (stereo)

f L

Low Cut-Off Frequency

f H

High Cut-Off Frequency

300

KHz

R i

Input Impedance

C T

Cross Talk

f = 1KHz

I SB

St-By Current Consumption

100

V SB out

St-By OUT Threshold Voltage

Amp. ON

3.5

V SB IN

St-By IN Threshold Voltage

Amp. OFF

1.5

V SB

Supply Dependent St-By

Threshold

St-By = H,

V S reducing/increasing

7.5

8.3

A M

Mute Attenuation

V O = 1Vrms

V M out

Mute OUT Threshold Voltage

Amp. Play

3.5

V Min

Mute IN Threshold Voltage

Amp. Mute

1.5

V M

Supply Dependent Mute

Threshold

Mute = IN,

V S reducing/increasing

8.5

9.3

I m (L)

Muting Pin Current

V MUTE = 1.5V

(Sourced Current)

I m (H)

Muting Pin Current

V MUTE = 3.5V

(Sourced Current)

Figure 1: Quiescent Current vs. Supply Voltage

Figure 2: Output Power vs. Supply Voltage

R L =4

f = 1KHz

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R L =4

TDA7393

Figure 3: Output Power vs Supply Voltage

Figure 4: EIAJ Power vs. Supply Voltage

R L =2 W

f = 1KHz

V i = 2.5Vrms

Figure 5: Cross-Talk vs. Frequency

Figure 6: SVR vs. Frequency

V O = 1Vrms

V S = 13.2V

R L =4 W

V r = 1Vrms

R g = 600

Mute 1,2 = OFF

Figure 7: Distortion vs. Frequency

Figure 8: Distortion vs. Frequency

Both channels

V S = 13.2V

R L =2

4/9

V S = 13.2V

R L =4

V S = 13.2V

R L =4

TDA7393

Figure 9: Block Diagram of Mute Circuit

Figure 10: Explanatory Waveforms Of Mute Circuit

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