TDA7386 - STMicroelectronics

TDA7386
4 x 49 W quad bridge car radio amplifier
Datasheet - production data
– Internally fixed gain (26dB)
– No external compensation
– No bootstrap capacitors
 Protections:
– Output short circuit to GND, to VS, across
the load
– Very inductive loads
– Overrating chip temperature with soft
thermal limiter
– Load dump voltage
– Fortuitous open GND
– Reversed battery
– ESD
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Flexiwatt25
Features
 High output power capability:
 4 x 49 W/4 Ω max.
 4 x 28 W/4 Ω @ 14.4V, 1 kHz, 10%
Description
 4 x 24 W/4 Ω @ 13.2V, 1 kHz, 10%
 Low distortion
The TDA7386 is an AB class audio power
amplifier, packaged in Flexiwatt 25 and designed
for high end car radio applications.
 Low output noise
 Standby function
 Mute function
 Automute at min. supply voltage detection
 Low external component count:
Based on a fully complementary PNP/NPN
configuration, the TDA7386 allows a rail to rail
output voltage swing with no need of bootstrap
capacitors. The extremely reduced boundary
components count allows very compact sets.
Table 1. Device summary
Order code
Package
Packing
TDA7386
Flexiwatt25
Tube
September 2013
This is information on a product in full production.
DocID4057 Rev 5
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www.st.com
Contents
TDA7386
Contents
1
Block and pin connection 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
PCB and component layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1
SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2
Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3
Standby and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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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
List of figures
TDA7386
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.
Figure 16.
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Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Standard test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Components and top copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Bottom copper layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Quiescent output voltage vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Max. output power vs. supply voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Distortion vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Distortion vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Crosstalk vs. frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Output noise vs. source resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power dissipation and efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DocID4057 Rev 5
TDA7386
Block and pin connection diagrams
Figure 1. Block diagram
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Figure 2. Pin connection (top view)
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Block and pin connection diagrams
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Electrical specifications
TDA7386
2
Electrical specifications
2.1
Absolute maximum ratings
Table 2. Absolute maximum ratings
Symbol
Parameter
Value
Unit
Operating supply voltage
18
V
VCC (DC)
DC supply voltage
28
V
VCC (pk)
Peak supply voltage (t = 50 ms)
50
V
Output peak current:
Repetitive (Duty Cycle 10% at f = 10 Hz)
Non Repetitive (t = 100 μs)
4.5
5.5
A
A
Power dissipation, (Tcase = 70 °C)
80
W
– 40 to 105
°C
VCC
IO
Ptot
Operating temperature range
Tamb
2.2
Tj
Junction temperature
150
C
Tstg
Storage temperature
– 55 to 150
C
Thermal data
Table 3. Thermal data
Symbol
Rth j-case
2.3
Parameter
Thermal resistance junction-to-case
max.
Value
Unit
1
°C/W
Electrical characteristics
VS = 14.4 V; f = 1 kHz; Rg = 600 ; RL = 4 ; Tamb = 25 °C; Refer to the test and application
diagram, unless otherwise specified.
Table 4. Electrical characteristics
Symbol
Iq1
VOS
VOS
Gv
Gv
Po
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Parameter
Test condition
Min.
Typ.
Max.
Unit
Quiescent current
RL =∞
-
190
350
mA
Output offset voltage
Play Mode
-
-
±80
mV
During mute on/off output
offset voltage
-
-
-
±80
mV
Voltage gain
-
25
26
27
dB
Channel gain unbalance
-
-
-
±1
dB
THD = 10%; VS = 13.2 V
22
24
-
W
Output power
THD = 0.8%; VS = 13.2 V
16.5
18
-
W
THD = 10%; VS = 14.4 V
26
28
-
W
DocID4057 Rev 5
TDA7386
Electrical specifications
Table 4. Electrical characteristics (continued)
Symbol
Po max
THD
Parameter
Test condition
Min.
Typ.
Max.
Unit
43
45
49
-
W
Max.output power (1)
VS = 14.4 V
VS = 15.2 V
Distortion
Po = 4W
-
0.04
0.15
%
"A" Weighted
-
50
70
μV
Bw = 20 Hz to 20 kHz
-
70
100
μV
f = 100 Hz; Vr = 1Vrms
50
75
-
dB
eNo
Output noise
SVR
Supply voltage rejection
fch
High cut-off frequency
Po = 0.5 W
80
200
-
kHz
Ri
Input impedance
-
70
100
-
kΩ
CT
Cross talk
f = 1 kHz; Po = 4 W
60
70
-
dB
f = 10 kHz; Po = 4W
-
60
-
dB
ISB
Standby current
consumption
VSt-by = 1.5
-
-
50
μA
VSt-by = 0 V
-
-
20
μA
Ipin4
Standby pin current
VSt-by = 1.5 to 3.5 V
-
-
±1
μA
VSB out
Standby out threshold
voltage
(Amp: on)
3.5
-
-
V
VSB IN
Standby in threshold voltage (Amp: off)
-
-
1.5
V
Mute attenuation
POref = 4 W
80
90
-
dB
VM out
Mute out threshold voltage
(Amp: play)
3.5
-
-
V
VM in
Mute in threshold voltage
(Amp: mute)
-
-
1.5
V
VS automute threshold
(Amp: mute); Att  80 dB; POref = 4 Ω
(Amp: play); Att < 0.1 dB; PO = 0.5 Ω
-
7.6
6.5
8.5
V
V
VMUTE = 1.5 V (Source current)
5
11
20
μA
VMUTE = 3.5 V
-5
-
20
μA
AM
VAM in
Ipin22
Muting pin current
1. Saturated square wave output.
Figure 3. Standard test and application circuit
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Electrical specifications
2.4
TDA7386
PCB and component layout
Referred to the circuit of Figure 3.
Figure 4. Components and top copper layer
Figure 5. Bottom copper layer
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TDA7386
2.5
Electrical specifications
Electrical characteristics curves
Figure 6. Quiescent current vs. supply voltage
Figure 7. Quiescent output voltage vs. supply
voltage
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Figure 8. Output power vs. supply voltage
Figure 9. Max. output power vs. supply voltage
Figure 10. Distortion vs. output power
Figure 11. Distortion vs. frequency
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Electrical specifications
TDA7386
Figure 12. Supply voltage rejection vs.
frequency
Figure 13. Crosstalk vs. frequency
Figure 14. Output noise vs. source resistance
Figure 15. Power dissipation and efficiency vs.
output power
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TDA7386
3
Application hints
Application hints
Referred to the circuit of Figure 3.
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 10F.
3.2
Input stage
The TDA7386’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 (0.1μF) is adopted, the low frequency cut-off
will amount to 16 Hz.
3.3
Standby and muting
Standby and muting facilities are both 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 10 μA normally flows out of pin 22, the maximum allowable
muting-series resistance (R2) is 70 kΩ, 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 22 may
rise to above the 1.5 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.
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Package information
4
TDA7386
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Figure 16. Flexiwatt25 mechanical data and package dimensions
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5
Revision history
Revision history
Table 5. Document revision history
Date
Revision
Changes
24-Nov-2001
1
Initial release.
20-Dec-2007
2
Document reformatted.
Modified the Features on page 1.
Modified the Figure 1 and 2.
Updated the Table 4: Electrical characteristics.
29-Oct-2008
3
Updated the Table 3: Thermal data on page 6.
19-Nov-2008
4
Update the Table 2: Absolute maximum ratings on page 6.
18-Sep-2013
5
Updated Features on page 1;
Updated Table 4: Electrical characteristics.
Updated Disclaimer.
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TDA7386
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