ST TDA7389A User Manual
TDA7389A
4 x 45W quad bridge car radio amplifier
Features
■High output power:
–4 x 45 W / 4 Ω max.
–4 x 28 W / 4 Ω @ 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
Protections:
■Output short circuit to GND, to VS, across the load
■Very inductive loads
■Overrating chip temperature with soft thermal limiter
Table 1. Device summary
Flexiwatt27
■Load dump voltage
■Fortuitous open GND
■Output DC offset detector
■Reversed battery
■ESD
Description
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.
Order code |
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Packing |
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TDA7389A |
Flexiwatt27 |
Tube |
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October 2008 |
Rev 2 |
1/14 |
www.st.com
Contents |
TDA7389A |
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Contents
1 |
Pin connection and block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. 5 |
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2 |
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2.1 |
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2.2 |
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
6 |
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2.3 |
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2.4 |
Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2.5 |
Test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
10 |
3 |
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
11 |
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3.1 |
SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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3.2 |
Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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3.3 |
Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
11 |
4 |
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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5 |
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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TDA7389A |
List of tables |
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List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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List of figures |
TDA7389A |
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List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 3. Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 4. Quiescent output voltage vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 5. Output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 6. Maximum output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 7. Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 8. Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 9. Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 10. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 11. Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 12. Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 13. ITU R-ARM frequency response, weighting filter for transient pop. . . . . . . . . . . . . . . . . . . . 9 Figure 14. Test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 15. Flexiwatt27 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
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TDA7389A |
Pin connection and block diagrams |
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1 Pin connection and block diagrams
Figure 1. Block diagram
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Vcc1 |
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Vcc2 |
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ST-BY |
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MUTE |
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CD |
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OUT1+ |
IN1 |
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OUT1- |
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PW-GND |
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OUT2+ |
IN2 |
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OUT2- |
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PW-GND |
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OUT3+ |
IN3 |
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OUT3- |
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PW-GND |
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OUT4+ |
IN4 |
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OUT4- |
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PW-GND |
AC-GND |
SVR |
TAB |
S-GND |
OFFSET |
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DETECTOR |
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D05AU1613 |
Figure 2. Pin connection (top view)
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27 |
TAB |
OFF.DET |
P-GND2 |
OUT2- |
ST-BY |
OUT2+ |
CC |
OUT1- |
P-GND1 |
OUT1+ |
SVR |
IN1 |
IN2 |
S-GND |
IN4 |
IN3 |
AC-GND |
OUT3+ |
P-GND3 |
OUT3- |
CC |
OUT4+ MUTE OUT4- |
P-GND4 |
CD |
TAB |
V |
V |
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FLEX27_O |
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