TDA7389A
4 x 45W quad bridge car radio amplifier
Features
■
High output power:
– 4 x 45 W / 4 max.
– 4 x 28 W / 4 @ 14.4 V, 1 kHz, 10 %
■
Low distortion
■
Low output noise
■
Standby function
■
Mute function
■
Automute at min. supply voltage detection
■
Low external component count:
– Internally fixed gain (26dB)
– No external compensation
– No bootstrap capacitors
Clipping detector
■
Offset detector
■
Diagnostic facility for:
– Out to GND short
– Out to VS short
– Thermal shutdown
■
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Flexiwatt27
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Protections:
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Output short circuit to GND, to VS, across the
load
■
Very inductive loads
■
Overrating chip temperature with soft thermal
limiter
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Table 1.
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Load dump voltage
■
Fortuitous open GND
■
Output DC offset detector
■
Reversed battery
■
ESD
Description
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The TDA7389A is an AB class audio power
amplifier, packaged in Flexiwatt 27 designed for
high end car radio applications.
Based on the fully complementary PNP/NPN
configuration the TDA7389A allows a rail to rail
output voltage swing with no need of bootstrap
capacitors.
Device summary
Order code
Package
Packing
TDA7389A
Flexiwatt27
Tube
September 2013
Rev 3
1/14
www.st.com
1
Contents
TDA7389A
Contents
1
Pin connection and block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4
Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5
Test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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3.1
SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2
Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3
Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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2/14
TDA7389A
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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3/14
List of figures
TDA7389A
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.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Quiescent output voltage vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maximum output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . . 9
Test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flexiwatt27 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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4/14
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TDA7389A
1
Pin connection and block diagrams
Pin connection and block diagrams
Figure 1.
Block diagram
Vcc1
Vcc2
ST-BY
CD
MUTE
OUT1+
OUT1-
IN1
PW-GND
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OUT2+
OUT2-
IN2
PW-GND
OUT3+
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OUT3-
IN3
PW-GND
Pr
OUT4+
OUT4-
IN4
AC-GND
SVR
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TAB
S-GND
PW-GND
OFFSET
DETECTOR
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D05AU1613
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Figure 2.
Pin connection (top view)
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27
1
CD
TAB
P-GND4
MUTE
OUT4-
VCC
OUT4+
OUT3-
OUT3+
P-GND3
IN3
AC-GND
IN4
IN2
S-GND
IN1
SVR
OUT1+
P-GND1
VCC
OUT1-
ST-BY
OUT2+
OUT2-
P-GND2
TAB
OFF.DET
O
FLEX27_O
5/14
Electrical specifications
TDA7389A
2
Electrical specifications
2.1
Absolute maximum ratings
Table 2.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
Operating supply voltage
18
V
VS (DC)
DC supply voltage
28
V
VS (pk)
Peak supply voltage (t = 50ms)
50
V
Output peak current:
Repetitive (duty cycle 10% at f = 10Hz)
Non repetitive (t = 100s)
4.5
5.5
Power dissipation, (Tcase = 70°C)
80
VS
IO
Ptot
2.2
Tj
Junction temperature
Tstg
Storage temperature
Thermal data
Symbol
Rth j-case
A
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W
Pr
150
C
C
– 55 to 150
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Thermal data
Table 3.
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Parameter
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Thermal resistance junction to case
max.
Value
Unit
1
°C/W
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2.3
Electrical characteristics
Table 4.
Electrical characteristics
(VS = 14.4V; f = 1KHz; Rg = 600; RL = 4; Tamb = 25°C; Refer to the test and application
diagram (Figure 14), unless otherwise specified.)
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Symbol
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Iq1
VOS
Parameter
Test condition
Quiescent current
RL =
Output offset voltage
Play Mode
During mute on/off output
offset voltagef
dVOS
Gv
Voltage gain
Gv
Channel gain unbalance
Po
Po max
6/14
ITU R-ARM weighted
During standby on/off output see Figure 13
offset voltage
Min.
Typ.
Max.
Unit
150
350
mA
±80
mV
-10
10
-50
50
mV
25
26
27
dB
±1
dB
Output power
THD = 10%; VS = 14.4V
26
28
W
Max.output power(1)
VS = 14.4V
41
45
W
TDA7389A
Table 4.
Electrical specifications
Electrical characteristics (continued)
(VS = 14.4V; f = 1KHz; Rg = 600; RL = 4; Tamb = 25°C; Refer to the test and application
diagram (Figure 14), unless otherwise specified.)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
0.04
0.10
%
"A" Weighted
50
70
V
Bw = 20 Hz to 20 kHz
70
100
V
THD
Distortion
Po = 4W
eNo
Output noise
SVR
Supply voltage rejection
f = 100Hz; Vr = 1Vrms
50
75
dB
fch
High cut-off frequency
Po = 0.5W
100
200
KHz
Ri
Input Impedance
70
100
60
75
CT
Cross talk
ISB
Standby current
consumption
Ipin4
Standby pin current
VSt-by = 1.2 to 2.6V
VSB out
Standby Out threshold
voltage
(Amp: On)
VSB IN
Standby In threshold voltage (Amp: Off)
f = 1 kHz; Po = 4W
AM
f = 10 kHz; Po = 4W
Mute Out threshold voltage
(Amp: play)
VM in
Mute In threshold voltage
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Muting pin current
bs
dB
50
A
V
1.2
90
V
dB
2.6
V
(Amp: mute)
1.2
(Amp: mute); Att 80 dB;
POref = 4
(Amp: play); Att < 0.1 dB;
PO = 0.5 W
A
25
2.6
80
K
dB
±1
t(s
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VS automute threshold
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VM out
Ipin22
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VSt-by = 0V
POref = 4 W
Pr
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VSt-by = 1.2V
Mute attenuation
VAM in
60
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150
6.5
7.6
8.5
VMUTE = 1.2 V
(Source current)
5
11
20
VMUTE = 2.6 V
-5
-
-20
V
V
A
Offset detector
ODLK
Voff
VPin2_Fw27
OD leakage current
Detected diff. output offset
VSt-by =5 V
Pin2_Fw27 voltage
for Detection = True
Ipin2 = 1 mA
VSt-by =5V; |Voff| > 2.5 V
1.5
1
µA
±2
2.5
V
0.2
0.4
V
1
A
0.4
V
2
%
Clipping detector
CDLK
Clip det high leakage current CD Off
CDSAT
Clip det sat voltage
DC On; ICD = 1 mA
CDTHD
Clip det THD level
Po > 16 W
0.2
1. Saturated square wave output.
7/14
Electrical specifications
TDA7389A
2.4
Electrical characteristic curves
Figure 3.
Quiescent current vs. supply
voltage
Figure 4.
Vo (V)
Id (mA)
10
180
Vi = 0
RL = 4Ω
9
Vin = 0
RL = 4Ω
170
Quiescent output voltage vs.
supply voltage
8
160
7
150
6
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140
5
130
4
120
8
10
12
14
16
Figure 5.
50
8
9
Output power vs. supply voltage
Figure 6.
Po (W)
)-
35
s
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c
30
25
THD = 1%
20
ro
10
5
8
9
P
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11
12
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Figure 7.
13
14
15
15
16
17
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AC00484
Maximum output power vs. supply
voltage
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55
50
45
40
35
25
20
15
10
16
Vs (V)
17
18
8
9
10
11
Distortion vs. output power
Figure 8.
THD (%)
12
13
14
15
16
Vs (V)
AC00485
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10
14
30
du
15
13
RL = 4Ω
f = 1 KHz
square-wave output
60
THD = 10%
12
s
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65
RL = 4Ω
f = 1 KHz
40
11
Vs (V)
70
45
10
AC00483
Po (W)
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3
18
VS (V)
10
17
18
AC00486
Distortion vs. frequency
THD (%)
Vs = 14.4V
RL = 4Ω
Po = 4W
Vs = 14.4V
RL = 4Ω
1
1
f = 10 KHz
0.1
0.1
f = 1 KHz
0.01
0.1
8/14
1
Po (W)
10
100
AC00487
0.01
10
10
2
103
f (Hz)
104
105
AC00488
TDA7389A
Figure 9.
Electrical specifications
Supply voltage rejection vs.
frequency
Figure 10. Crosstalk vs. frequency
SVR (dB)
100
SVR (dB)
100
90
90
80
80
70
70
60
60
50
Rg = 600Ω
Vripple = 1 Vrms
40
RL = 4Ω
Po = 4W
Rg = 600Ω
50
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40
30
20
2
10
3
4
10
10
30
5
10
10
f (Hz)
102
10
3
4
10
AC00489
10
5
10
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f (Hz)
AC00490
Figure 11. Output noise vs. source resistance Figure 12. Power dissipation and efficiency
vs. output power
En (µV)
180
160
140
Vs = 13.2V
RL = 4 x 4Ω
f = 1 KHz
70
Vs = 14.4V
RL = 4Ω
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60
120
50
100
(s)
60
40
t
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"A" wgtd
20
0
1
od
2
10
10
3
10
Pr
η
4
5
10
60
50
40
Pdiss
30
30
20
20
10
10
0
10
2
4
6
8
10
12
Po (W)
AC00491
80
70
0
Rg (Ω)
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η (%)
-O
40
22-22K Hz lin
80
let
Pdiss (W)
80
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14
16
18
20
22
0
24
AC00492
Figure 13. ITU R-ARM frequency response,
weighting filter for transient pop
bs
Output attenuation (dB)
10
O
0
-10
-20
-30
-40
-50
10
2
10
3
10
Hz
4
10
5
10
AC00343
9/14
Electrical specifications
2.5
TDA7389A
Test and application circuit
Figure 14. Test and application circuit
OFFSET
DETECTOR OUT
C8
0.1μF
C7
2200μF
R4
V
Vcc1-2
Vcc3-4
7
R1
ST-BY
47K
2
21
10
5
10K
C9
1μF
R2
9
MUTE
23
47K
C10
1μF
IN1
3
12
IN2
19
IN3
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20
16
C3 0.1μF
S-GND
C5
0.47μF
)-
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10/14
so
14
17
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let
15
IN4
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18
13
C2 0.1μF
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OUT2
4
0.1μF
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6
C1
C4 0.1μF
OUT1
8
11
b
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C6
47μF
26
SVR
CD OUT
22
25
24
1, 27
CD
OUT3
TAB
D05AU1614A
R3
V
47K
OUT4
TDA7389A
3
Application hints
Application hints
Ref. to the circuit of Figure 14.
3.1
SVR
Besides its contribution to the ripple rejection, the SVR capacitor governs the turn ON/OFF
time sequence and, consequently, plays an essential role in the pop optimization during
ON/OFF transients.
To conveniently serve both needs, its minimum recommended value is 22µF, 47µF can
be used to optimize pop performances.
3.2
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Input stage
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The TDA7389A’s inputs are ground-compatible and can stand very high input signals (±
8Vpk) without any performances degradation.
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If the standard value for the input capacitors (0.1µF) is adopted, the low frequency cut-off
will amount to 16 Hz.
s
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The input capacitors should be 1/4 of the capacitor connected to AC-GND pin for optimum
pop performances.
)
(s
3.3
Standby and muting
t
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Standby and muting facilities are both 3.3 V CMOS-compatible. If unused, a straight
connection to Vs of their respective pins would be admissible.
d
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Conventional/low-power transistors can be employed to drive muting and stand-by pins in
absence of true CMOS ports or microprocessors. R-C cells have always to be used in order
to smooth down the transitions for preventing any audible transient noises.
P
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Since a DC current of about 10µA normally flows out of pin 23, the maximum allowable
muting-series resistance (R2) is 70 k, which is sufficiently high to permit a muting capacitor
reasonably small (about 1µF).
If R2 is higher than recommended, the involved risk will be that the voltage at pin 23 may rise
to above the 1.2 V threshold voltage and the device will consequently fail to turn OFF when
the mute line is brought down.
About the stand-by, the time constant to be assigned in order to obtain a virtually pop-free
transition has to be slower than 2.5V/ms.
11/14
Package information
4
TDA7389A
Package information
In order to meet environmental requirements, ST (also) offers these devices in ECOPACK®
packages. ECOPACK® packages are lead-free. The category of second Level Interconnect
is marked on the package and on the inner box label, in compliance with JEDEC Standard
JESD97. The maximum ratings related to soldering conditions are also marked on the inner
box label.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
Figure 15. Flexiwatt27 mechanical data and package dimensions
DIM.
mm
TYP.
4.50
1.90
1.40
0.90
0.39
MIN.
4.45
1.80
A
B
C
D
E
F (1)
G
G1
H (2)
H1
H2
H3
L (2)
L1
L2 (2)
L3
L4
L5
M
M1
N
O
R
R1
R2
R3
R4
V
V1
V2
V3
0.75
0.37
0.80
25.75
28.90
22.07
18.57
15.50
7.70
3.70
3.60
1.00
26.00
29.23
17.00
12.80
0.80
22.47
18.97
15.70
7.85
5
3.5
4.00
4.00
2.20
2
1.70
0.5
0.3
1.25
0.50
MAX.
4.65
2.00
MIN.
0.175
0.070
1.05
0.42
0.57
1.20
26.25
29.30
0.029
0.014
0.031
1.014
1.139
22.87
19.37
15.90
7.95
0.869
0.731
0.610
0.303
4.30
4.40
0.145
0.142
inch
TYP.
0.177
0.074
0.055
0.035
0.015
0.040
1.023
1.150
0.669
0.503
0.031
0.884
0.747
0.618
0.309
0.197
0.138
0.157
0.157
0.086
0.079
0.067
0.02
0.12
0.049
0.019
)
(s
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MAX.
0.183
0.079
u
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0.041
0.016
0.022
0.047
1.033
1.153
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0.904
0.762
0.626
0.313
s
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O
0.169
0.173
5˚ (Typ.)
3˚ (Typ.)
20˚ (Typ.)
45˚ (Typ.)
d
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OUTLINE AND
MECHANICAL DATA
Flexiwatt27 (vertical)
(1): dam-bar protusion not included
(2): molding protusion included
let
V
C
B
V
H
H1
V3
A
H2
H3
O
so
R3
R4
L4
b
O
P
e
V1
R2
L2
N
L3
R
L
L1
V1
V2
R2
D
R1
L5
Pin 1
R1
R1
E
G
G1
F
FLEX27ME
M
M1
7139011
AG00601v1
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Revision history
Revision history
Table 5.
Document revision history
Date
Revision
Changes
14-Nov-2007
1
Initial release.
20-Oct-2008
2
Updated the Table 3: Thermal data on page 6.
17-Sep-2013
3
Updated Disclaimer.
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