STMICROELECTRONICS TDA7389A

TDA7389A
4 x 45W quad bridge car radio amplifier
Features
■
High output power:
– 4 x 45W/4Ω max.
– 4 x 28W/4Ω @ 14.4V, 1KHz, 10%
■
Low distortion
■
Low output noise
■
Stand-by function
■
Mute function
■
Automute at min. supply voltage detection
■
Low external component count:
– Internally fixed gain (26dB)
– No external compensation
– No bootstrap capacitors
■
Load dump voltage
■
Clipping detector
■
Fortuitous open GND
■
Offset detector
■
Output DC offset detector
■
Diagnostic facility for:
– Out to GND short
– Out to VS short
– Thermal shutdown
■
Reversed battery
■
ESD
Flexiwatt27
Description
Protections:
■
Output short circuit to GND, to VS, across the
load
■
Very inductive loads
■
Overrating chip temperature with soft thermal
limiter
Table 1.
The TDA7389A is a new technology class AB
Audio Power Amplifier in Flexiwatt 27 package
designed for high end car radio applications.
Thanks to the fully complementary PNP/NPN
output 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
November 2007
Rev 1
1/14
www.st.com
1
Contents
TDA7389A
Contents
1
Pins 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
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1
SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2
Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3
Stand-by and Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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
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.
4/14
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pins 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 & 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
TDA7389A
Pins connection and block diagrams
Figure 1.
Block diagram
Vcc1
Vcc2
ST-BY
CD
MUTE
OUT1+
OUT1-
IN1
PW-GND
OUT2+
OUT2-
IN2
PW-GND
OUT3+
OUT3-
IN3
PW-GND
OUT4+
OUT4-
IN4
PW-GND
AC-GND
SVR
TAB
S-GND
OFFSET
DETECTOR
D05AU1613
Pins connection (top view)
27
CD
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
1
TAB
Figure 2.
OFF.DET
1
Pins connection and block diagrams
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 = 100μs)
4.5
5.5
A
Power dissipation, (Tcase = 70°C)
80
W
Tj
Junction temperature
150
°C
Tstg
Storage temperature
– 55 to 150
°C
VS
IO
Ptot
2.2
Thermal data
Table 3.
Thermal data
Symbol
Rth j-amb
Parameter
Thermal resistance junction to ambient
max.
Value
Unit
1
°C/W
2.3
Electrical characteristics
Table 4.
Electrical characteristics
(VS = 14.4V; f = 1KHz; Rg = 600Ω; RL = 4Ω; Tamb = 25°C; Refer to the test and application
diagram (Figure 14), unless otherwise specified.)
Symbol
Iq1
VOS
Parameter
Quiescent current
RL = ∞
Output offset voltage
Play Mode
During mute on/off output
offset voltagef
dVOS
Voltage gain
ΔGv
Channel gain unbalance
Po max
6/14
During st-by on/off output
offset voltage
Gv
Po
Test condition
ITU R-ARM weighted
see Figure 13
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 = 600Ω; RL = 4Ω; 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
μV
Bw = 20Hz to 20KHz
70
100
μV
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
dB
CT
Cross talk
60
dB
ISB
St-By current consumption
Ipin4
St-By pin current
f = 1KHz; Po = 4W
f = 10KHz; Po = 4W
VSt-By = 1.2V
50
VSt-By = 0V
25
VSt-By = 1.2 to 2.6V
±1
VSB out
St-By OUT threshold voltage (Amp: ON)
VSB IN
St-By IN threshold voltage
(Amp: OFF)
Mute attenuation
POref = 4W
AM
VM out
Mute OUT threshold voltage (Amp: Play)
VM in
Mute IN threshold voltage
(Amp: Mute)
VS automute threshold
(Amp: Mute); Att ≥ 80dB;
POref = 4Ω
(Amp: Play); Att < 0.1dB;
PO = 0.5W
VAM in
Ipin22
Muting pin current
150
2.6
μA
μA
V
1.2
80
KΩ
90
V
dB
2.6
V
1.2
6.5
7.6
8.5
VMUTE = 1.2V
(Source current)
5
11
20
VMUTE = 2.6V
-5
-
-20
V
V
μA
Offset detector
ODLK
Voff
VPin2_Fw27
OD leakage current
Detected diff. output offset
VST-BY =5V
Pin2_Fw27 Voltage
for Detection = True
Ipin2 = 1mA
VST-BY =5V; |Voff| > 2.5V
1.5
1
µA
±2
2.5
V
0.2
0.4
V
1
μA
0.4
V
2
%
Clipping detector
CDLK
Clip det high leakage current CD Off
CDSAT
Clip det sat voltage
DC On; ICD = 1mA
CDTHD
Clip det THD level
Pout > 16W
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
140
5
130
4
120
8
10
12
14
16
18
VS (V)
Figure 5.
3
8
Output power vs. supply voltage
Figure 6.
65
RL = 4Ω
f = 1 KHz
40
11
12
14
15
16
17
55
35
50
30
45
18
AC00484
Maximum output power vs. supply
voltage
RL = 4Ω
f = 1 KHz
square-wave output
60
THD = 10%
13
Po (W)
70
45
10
Vs (V)
Po (W)
50
9
AC00483
40
25
35
THD = 1%
20
30
25
15
20
10
15
5
10
8
9
10
11
12
13
14
15
16
Vs (V)
Figure 7.
10
17
18
8
9
10
11
Distortion vs. output power
Figure 8.
THD (%)
12
13
14
15
16
Vs (V)
AC00485
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
40
30
20
2
10
3
4
10
10
30
5
10
10
f (Hz)
102
10
3
4
10
AC00489
5
10
10
AC00490
f (Hz)
Figure 11. Output noise vs. source resistance Figure 12. Power dissipation & efficiency vs.
output power
En (µV)
180
160
140
60
120
η
Vs = 13.2V
RL = 4 x 4Ω
f = 1 KHz
70
Vs = 14.4V
RL = 4Ω
η (%)
Pdiss (W)
80
80
70
60
50
50
100
22-22K Hz lin
80
40
40
Pdiss
30
30
20
20
20
10
10
0
0
60
40
"A" wgtd
1
2
10
3
10
10
4
5
10
Rg (Ω)
0
10
2
4
6
8
10
12
Po (W)
AC00491
14
16
18
20
22
0
24
AC00492
Figure 13. ITU R-ARM frequency response,
weighting filter for transient pop
Output attenuation (dB)
10
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
R2
C9
1μF
MUTE
9
23
47K
C10
1μF
6
C1
IN1
3
12
18
13
19
C2 0.1μF
IN3
OUT3
20
16
C3 0.1μF
22
25
15
IN4
C4 0.1μF
OUT2
4
0.1μF
IN2
OUT1
8
S-GND
14
17
C5
0.47μF
OUT4
24
11
C6
47μF
26
SVR
1, 27
CD
TAB
D05AU1614A
R3
V
47K
CD OUT
10/14
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
Input stage
The TDA7389A’s inputs are ground-compatible and can stand very high input signals (±
8Vpk) without any performances degradation.
If the standard value for the input capacitors (0.1µF) is adopted, the low frequency cut-off
will amount to 16 Hz.
The input capacitors should be 1/4 of the capacitor connected to AC-GND pin for optimum
pop performances.
3.3
Stand-by and Muting
Stand-by and Muting facilities are both 3.3V CMOS-COMPATIBLE. If unused, a straight
connection to Vs of their respective pins would be admissible.
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.
Since a DC current of about 10µA normally flows out of pin 23, the maximum allowable
muting-series resistance (R2) is 70KΩ, 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 1.2V 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 offers this device in ECOPACK® packages.
This package has a Lead-free second level interconnect. 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.
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
mm
TYP.
4.50
1.90
1.40
0.90
0.39
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
MAX.
0.183
0.079
OUTLINE AND
MECHANICAL DATA
0.041
0.016
0.022
0.047
1.033
1.153
0.904
0.762
0.626
0.313
0.169
0.173
5˚ (Typ.)
3˚ (Typ.)
20˚ (Typ.)
45˚ (Typ.)
Flexiwatt27 (vertical)
(1): dam-bar protusion not included
(2): molding protusion included
V
C
B
V
H
H1
V3
A
H2
O
H3
R3
L4
R4
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
12/14
TDA7389A
5
Revision history
Revision history
Table 5.
Document revision history
Date
Revision
14-Nov-2007
1
Changes
Initial release.
13/14
TDA7389A
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