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TDA7389
4 x 45W quad bridge car radio amplifier
Features
High output power: - 4 x 45W/4 max. - 4 x 28W/4 @ 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 Clipping detector Diagnostic facility for: - Out to GND short - Out to VS short - Thermal shutdown
Flexiwatt 25

Load dump voltage Fortuitous open GND Reversed battery ESD

Description
The TDA7389 is a new technology class AB Audio Power Amplifier in Flexiwatt 25 package designed for high end car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7389 allows a rail to rail output voltage swing with no need of bootstrap capacitors.
Protections:

Output short circuit to GND, to VS, across the load Very inductive loads Overrating chip temperature with soft thermal limiter Device summary
Order code TDA7389
Table 1.
Package Flexiwatt 25
Packing Tube
November 2007
Rev 1
1/14
www.st.com 1
Contents
TDA7389
Contents
1 2 Pins connection and block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 2.2 2.3 2.4 2.5 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 3.2 3.3 SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Stand-by and Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 5
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2/14
TDA7389
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
TDA7389
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 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 Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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TDA7389
Pins connection and block diagrams
1
Pins connection and block diagrams
Figure 1. Block diagram
Vcc1 Vcc2
ST-BY CD OUT1+ IN1 OUT1PW-GND OUT2+ IN2 OUT2PW-GND OUT3+ IN3 OUT3PW-GND OUT4+ IN4 OUT4PW-GND AC-GND SVR TAB S-GND
MUTE
D99AU1018A
Figure 2.
Pins connection (top view)
1
25
OUT2-
P-GND2
OUT2+
ST-BY
OUT4+
OUT4-
MUTE
P-GND4
OUT1-
P-GND1
OUT1+
S-GND
AC-GND
OUT3+
P-GND3
OUT3-
SVR
IN1
IN2
IN4
TAB
VCC
IN3
VCC
D94AU159mod
CD
5/14
Electrical specifications
TDA7389
2
2.1
Electrical specifications
Absolute maximum ratings
Table 2.
Symbol VS VS (DC) VS (pk) IO Ptot Tj Tstg
Absolute maximum ratings
Parameter Operating supply voltage DC supply voltage Peak supply voltage (t = 50ms) Output peak current: Repetitive (duty cycle 10% at f = 10Hz) Non repetitive (t = 100s) Power dissipation, (Tcase = 70C) Junction temperature Storage temperature Value 18 28 50 4.5 5.5 80 150 - 55 to 150 Unit V V V A W C C
2.2
Thermal data
Table 3.
Symbol Rth j-amb
Thermal data
Parameter Thermal resistance junction to ambient max. Value 1 Unit C/W
2.3
Table 4.
Electrical characteristics
Electrical characteristics (VS = 14.4V; f = 1KHz; Rg = 600; RL = 4; Tamb = 25C; Refer to the test and application diagram (Figure 14), unless otherwise specified.)
Parameter Quiescent current Output offset voltage During mute on/off output offset voltagef RL = Play Mode ITU R-ARM weighted see Figure 13 -10 -50 25 26 Test condition Min. Typ. 150 Max. 350 80 10 mV 50 27 1 THD = 10%; VS = 14.4V VS = 14.4V 26 41 28 45 dB dB W W Unit mA mV
Symbol Iq1 VOS
dVOS
During st-by on/off output offset voltage Voltage gain Channel gain unbalance Output power Max.output power(1)
Gv Gv Po Po max
6/14
TDA7389 Table 4.
Electrical specifications Electrical characteristics (continued) (VS = 14.4V; f = 1KHz; Rg = 600; RL = 4; Tamb = 25C; Refer to the test and application diagram (Figure 14), unless otherwise specified.)
Parameter Distortion Output noise Bw = 20Hz to 20KHz Supply voltage rejection High cut-off frequency Input Impedance f = 1KHz; Po = 4W Cross talk f = 10KHz; Po = 4W St-By current consumption St-By pin current VSt-By = 1.2V VSt-By = 0V VSt-By = 1.2 to 2.6V 2.6 1.2 80 2.6 1.2 6.5 7.6 5 -5 11 8.5 20 -20 A 90 60 50 25 1 A V V dB V V dB A f = 100Hz; Vr = 1Vrms Po = 0.5W 50 100 70 60 70 75 200 100 75 150 100 Po = 4W "A" Weighted Test condition Min. Typ. 0.04 50 Max. 0.10 70 Unit % V V dB KHz K dB
Symbol THD eNo SVR fch Ri CT
ISB Ipin4 VSB out VSB IN AM VM out VM in
St-By OUT threshold voltage (Amp: ON) St-By IN threshold voltage Mute attenuation (Amp: OFF) POref = 4W
Mute OUT threshold voltage (Amp: Play) Mute IN threshold voltage (Amp: Mute) (Amp: Mute); Att 80dB; POref = 4 (Amp: Play); Att < 0.1dB; PO = 0.5W VMUTE = 1.2V (Source current) VMUTE = 2.6V
VAM in
VS automute threshold
V
Ipin22
Muting pin current
Clipping detector CDLK CDSAT CDTHD Clip det high leakage current CD Off Clip det sat voltage Clip det THD level DC On; ICD = 1mA Pout > 16W 0.2 1 0.4 2 A V %
1. Saturated square wave output.
7/14
Electrical specifications
TDA7389
2.4
Figure 3.
Electrical characteristic curves
Quiescent current vs. supply voltage Figure 4. Quiescent output voltage vs. supply voltage
Id (mA) 180 170 160 Vin = 0 RL = 4
Vo (V) 10 9 8 7 Vi = 0 RL = 4
150
6
140
5
130 120 8 10 12 VS (V) 14 16 18
AC00483
4 3 8 9 10 11 12 13 Vs (V) 14 15 16 17 18
AC00484
Figure 5.
Output power vs. supply voltage
Figure 6.
Maximum output power vs. supply voltage
50 45 40 35 30 25 20 15 10 5 8
Po (W) 70 65 RL = 4 f = 1 KHz 60 THD = 10% 55 50 45 40 THD = 1% 35 30 25 20 15 10 9 10 11 12 13 Vs (V) 14 15 16 17 18
AC00485
Po (W) RL = 4 f = 1 KHz square-wave output
8
9
10
11
12
13 Vs (V)
14
15
16
17
18
AC00486
Figure 7.
Distortion vs. output power
Figure 8.
Distortion vs. frequency
10
THD (%) Vs = 14.4V RL = 4
10
THD (%) Vs = 14.4V RL = 4 Po = 4W
1 f = 10 KHz 0.1 f = 1 KHz
1
0.1
0.01 0.1
1
Po (W)
10
100
AC00487
0.01 10
10
2
103 f (Hz)
104
105
AC00488
8/14
TDA7389
Electrical specifications
Figure 9.
Supply voltage rejection vs. frequency
Figure 10. Crosstalk vs. frequency
100 90 80 70 60
SVR (dB)
100 90 80 70 60
SVR (dB)
50 40 30 20 10
Rg = 600 Vripple = 1 Vrms
50 40
RL = 4 Po = 4W Rg = 600
10
2
10
3
10
4
10
5
30 10
102
10
3
10
4
10
5
f (Hz)
AC00489
f (Hz)
AC00490
Figure 11. Output noise vs. source resistance Figure 12. Power dissipation & efficiency vs. output power
180 160 140 120 100 80 60 40 20 0 1 10 10
2
En (V) Vs = 14.4V RL = 4
80 70 60 50
Pdiss (W) Vs = 13.2V RL = 4 x 4 f = 1 KHz
(%)
80 70 60 50 40
22-22K Hz lin
40 Pdiss 30 20
30 20 10 0 24
AC00492
"A" wgtd
10 0
3 4 5
10 Rg ()
10
10
0
2
4
6
8
10
12 Po (W)
14
16
18
20
22
AC00491
Figure 13. ITU R-ARM frequency response, weighting filter for transient pop
Output attenuation (dB) 10 0 -10 -20 -30 -40 -50 10 10
2
10 Hz
3
10
4
10
5
AC00343
9/14
Electrical specifications
TDA7389
2.5
Test and application circuit
Figure 14. Test and application circuit
C8 0.1F C7 2200F Vcc1-2 R1 ST-BY 10K R2 MUTE 47K C1 IN1 0.1F IN2 C2 0.1F IN3 C3 0.1F IN4 C4 0.1F S-GND 14 13 16 C5 0.47F C6 47F 10 SVR 25 CD 1 TAB R3 V 47K CD OUT
D95AU335C
Vcc3-4 6 20 9 8 OUT1
4 C9 1F 22 C10 1F 11
7
5 2 3 OUT2
12
17 18 OUT3
15
19
21 24 23 OUT4
10/14
TDA7389
Application hints
3
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 22F, 47F can be used to optimize pop performances.
3.2
Input stage
The TDA7389'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 (0.1F) 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 10A normally flows out of pin 23, the maximum allowable muting-series resistance (R2) is 70K, which is sufficiently high to permit a muting capacitor reasonably small (about 1F). 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
TDA7389
4
Package information
In order to meet environmental requirements, ST offers this device in ECOPACK(R) 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. Flexiwatt25 mechanical data and package dimensions
DIM. 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 MIN. 4.45 1.80 0.75 0.37 0.80 23.75 28.90 mm TYP. 4.50 1.90 1.40 0.90 0.39 1.00 24.00 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 1.05 0.42 0.57 1.20 24.25 29.30 MIN. 0.175 0.070 0.029 0.014 0.031 0.935 1.139 inch TYP. 0.177 0.074 0.055 0.035 0.015 0.040 0.945 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 0.041 0.016 0.022 0.047 0.955 1.153
OUTLINE AND MECHANICAL DATA
22.07 18.57 15.50 7.70
22.87 19.37 15.90 7.95
0.869 0.731 0.610 0.303
0.904 0.762 0.626 0.313
3.70 3.60
4.30 4.40
0.145 0.142
0.169 0.173
5 (T p.) 3 (Typ.) 20 (Typ.) 45 (Typ.)
Flexiwatt25 (vertical)
(1): dam-bar protusion not included (2): molding protusion included
V C B V V3 H3 H H1 H2 R3 R4 V1 R2 R L L1 A
L4
O
L2
N
L3
V1
V2
R2 L5 G G1 F
FLEX25ME
R1 R1 R1 E M M1
D
Pin 1
7034862
12/14
TDA7389
Revision history
5
Revision history
Table 5.
Date 9-Nov-2007
Document revision history
Revision 1 Initial release. Changes
13/14
TDA7389
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