TDA7393
2 x 32W DUAL BRIDGE CAR RADIO AMPLIFIER
HIGH OUTPUT POWER CAPABILITY:
2 x 35W max./4
2 x 32W EIAJ/4
2 x 22W typ./4
@ 14.4V, 1KHz, 10%
2 x 19W typ./4
@ 13.2V, 1KHz, 10%
2 x 28W typ./2
@ 14.4V, 1KHz, 10%
2 x 25W typ./2
@ 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
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
October 1998
MULTIWAT T15
ORDERING NUMBER: TDA7393
BLOCK DIAGRAM
1/9
allows very compact sets.
PIN CONNECTION (Top view)
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V
CC
Operating Supply Voltage
18
V
V
CC (DC)
DC Supply Voltage
28
V
V
CC (pk)
Peak Supply Voltage (t = 50ms)
50
V
I
O
Output Peak Current:
Repetitive (Duty Cycle 10% at f = 10Hz)
Non Repetitive (t = 100
s)
4.5
5.5
A
A
P
tot
Power dissipation, Tcase = 75
C (see derating curve)
50
W
T
j
Junction Temperature
150
C
T
op
Operating Ambient Temperature
40 to 85
C
T
stg
Storage Temperature
55 to 150
C
THERMAL DATA
Symbol
Parameter
Value
Unit
R
th j-case
Thermal Resistance Junction to Case
Max.
1.5
C/W
TDA7393
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ELECTRICAL CHARACTERISTICS (V
S
= 13.2V; f = 1KHz; R
g
= 600
; R
L
= 4
; T
amb
= 25
C;
Refer to the application circuit, unless otherwise specified.)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
I
q1
Quiescent Current
90
180
mA
V
OS
Output Offset Voltage
150
mV
G
v
Voltage Gain
30.5
32
33.5
dB
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
17
22
19
16
25
28
W
W
W
W
W
P
o max
Max. Output Power
EIAJ RULES; V
S
= 13.7V
30
W
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)
60
dB
f
L
Low Cut-Off Frequency
10
Hz
f
H
High Cut-Off Frequency
300
KHz
R
i
Input Impedance
10
15
20
K
C
T
Cross Talk
f = 1KHz
50
65
dB
I
SB
St-By Current Consumption
100
A
V
SB out
St-By OUT Threshold Voltage
Amp. ON
3.5
V
V
SB IN
St-By IN Threshold Voltage
Amp. OFF
1.5
V
V
SB
Supply Dependent St-By
Threshold
St-By = H,
V
S
reducing/increasing
7.5
8.3
V
A
M
Mute Attenuation
V
O
= 1Vrms
75
dB
V
M out
Mute OUT Threshold Voltage
Amp. Play
3.5
V
V
M in
Mute IN Threshold Voltage
Amp. Mute
1.5
V
V
M
Supply Dependent Mute
Threshold
Mute = IN,
V
S
reducing/increasing
8.5
9.3
V
I
m (L)
Muting Pin Current
V
MUTE
= 1.5V
(Sourced Current)
6
10
14
A
I
m (H)
Muting Pin Current
VMUTE = 3.5V
(Sourced Current)
6
10
14
A
Figure 1: Quiescent Current vs. Supply Voltage
Figure 2: Output Power vs. Supply Voltage
R
L
= 4
R
L
= 4
f = 1KHz
TDA7393
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Figure 5: Cross-Talk vs. Frequency
Figure 6: SVR vs. Frequency
Figure 7: Distortion vs. Frequency
Figure 8: Distortion vs. Frequency
Figure 3: Output Power vs Supply Voltage
Figure 4: EIAJ Power vs. Supply Voltage
R
L
= 2
f = 1KHz
f = 1KHz
V
i
= 2.5Vrms
V
S
= 13.2V
R
L
= 4
V
O
= 1Vrms
V
S
= 13.2V
R
L
= 4
V
r
= 1Vrms
R
g
= 600
Mute 1,2 = OFF
V
S
= 13.2V
R
L
= 2
V
S
= 13.2V
R
L
= 4
Both channels
TDA7393
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Figure 9: Block Diagram of Mute Circuit
Figure 10: Explanatory Waveforms Of Mute Circuit
TDA7393
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