TDA7391
35 W bridge car radio amplifier
Datasheet - production data
– Internally fixed gain (30 dB)
– No SVR Capacitor
Standby function (CMOS compatible)
Programmable turn-on/off delay
No audible pop during mute and standby
operations
Protections:
– Short circuit (to GND, to VS, across the
load)
– Very inductive loads
– Chip over temperature
– Load dump
– Open GND
– ESD
'!0'03
Multiwatt11
Features
High power capability:
– 40 W/4 max
– 35 W/4 EIAJ
– 45 W/3.2 max
– 40 W/3.2 EIAJ
– 32 W/3.2 @ VS = 14.4 V, f = 1 kHz,
d = 10 %
– 26 W/4 @ VS = 14.4 V, f = 1 kHz,
d = 10 %
DIfferential inputs (either single ended or
differential input signal are accepted)
Minimum external component count:
– No bootstrap capacitors
– No Boucherot cells
Table 1.
Description
The TDA7391 is a bridge class AB audio power
amplifier specially intended for car radio high
power applications.
The high power capability together with the
possibility to operate either in differential input
mode or single ended input mode makes it
suitable for boosters and high end car radio
equipments. The exclusive fully complementary
output stage and the internal fixed gain
configuration drop the external component count.
The on board clipping detector allows easy
implementation of gain compression systems.
Device summary
Order code
Package
Packing
TDA7391
Multiwatt11 (vertical)
Tube
September 2013
This is information on a product in full production.
DocID1509 Rev 5
1/13
www.st.com
Contents
TDA7391
Contents
1
2
Block and pin description diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2/13
DocID1509 Rev 5
TDA7391
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DocID1509 Rev 5
3/13
3
List of figures
TDA7391
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.
4/13
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Printed circuit board and component layout of the Figure 4 . . . . . . . . . . . . . . . . . . . . . . . . . 9
Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EIAJ power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Output power vs. supply voltage (RL = 4 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Distortion vs. frequency (RL = 4 ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Output power vs. supply voltage (RL = 3.2 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Distortion vs. frequency (RL = 3.2 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Common mode rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Total power dissipation and efficiency vs. output power (RL = 4) . . . . . . . . . . . . . . . . . . 10
Power bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Multiwatt11 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 11
DocID1509 Rev 5
TDA7391
Block and pin description diagrams
1
Block and pin description diagrams
1.1
Block diagram
Figure 1. Block diagram
9&&
9&&
6+257&,5&8,7
'8037+(50$/
3527(&7,21
5()(5(1&(6
67$1'%<7+5(6+2/'
,1
32:(5$03
&20021
02'(
,&0
,1
9&&
7+'
'(7(&7
&'
287
96
352*5$00$%/(
&855(17&,5&8,7
087(7+5(6+2/'
087(
1.2
/76
',6$%/(
32:(5$03
JP
9 I7M
/76
287
6<1&
*1'
67$1'%<
*$3*36
Pin description
Figure 2. Pin connection (top view)
7$%&211(&7('723,1
DocID1509 Rev 5
087(
6<1&
96
67$1'%<
287
*1'
287
&'
96
,1
,1
*$3*36
5/13
12
Block and pin description diagrams
TDA7391
Table 2. Pin functional description
Pin#
Description
The input stage is a high impedance type also capable of operation in single
ended mode with one input capacitively coupled to the signal GND. The
impedance seen by the inverting and non inverting input pins must be
matched.
1, 2
INPUTS
3,9
+V
Supply voltage.
4
CD
The TDA7391 is equipped with a diagnostic circuitry able to detect the clipping
in the Output Signal (distortion = 10%).
The CD pin (open collector) gives out low level signal during clipping.
5, 7
6
8
6/13
Pin name
The output stage is a bridge type able to drive loads as low as 3.2. It consists
of two class AB fully complementary PNP/NPN stages fully protected.
OUTPUTS
A rail to rail output voltage swing is achieved without need of bootstrap
capacitors. No external compensation is necessary.
GND
Ground.
The device features a standby function which shuts down all the internal bias
supplies when the STAND-BY pin is low. In standby mode the amplifier sinks a
STAND-BY
small current (in the range of few A). When the STAND-BY pin is high the IC
becomes fully operational.
10
SYNC
A resistor (R2) has to be connect between pin 10 and GND in order to program
the current that flows in the C3 capacitor (pin 11). The values of C3 and R2
determine the time required to bias the amplifier.
11
MUTE
The pin will have a capacitor (C3) tied to GND to set the MUTE/STAND-BY
time. An automatic Mute during turn on/off is provided to prevent noisy
transients.
DocID1509 Rev 5
TDA7391
Electrical specifications
2
Electrical specifications
2.1
Absolute maximum ratings
Table 3. Absolute maximum ratings
Symbol
Parameter
Value
Unit
VS
DC supply voltage
28
V
VOP
Operating supply voltage
18
V
Peak supply voltage (t = 50 ms)
50
V
Output peak current repetitive (f > 10 Hz)
4.5
A
Output peak current non repetitive
6
A
Power dissipation (Tcase = 85 °C)
43
W
-40 to 150
C
-40 to 105
°C
VPEAK
IO
Ptot
Tstg, Tj
Tamb
Storage and junction
temperature(1)
Operative ambient temperature range
1. A suitable heatsink/dissipation system should be used to keep Tj inside specified limits.
2.2
Thermal data
Table 4. Thermal data
Symbol
Rth j-case
2.3
Parameter
Thermal resistance junction to case
Max
Value
Unit
1.8
°C/W
Electrical characteristics
Refer to the test circuit, VS = 14.4 V; RL = 4 , f = 1 kHz, Tamb = 25 °C; unless otherwise
specified.
Table 5. Electrical characteristics
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
VS
Supply voltage range
-
8
-
18
V
Iq
Total quiescent current
-
-
60
150
mA
VOS
Output offset voltage
-
-
120
mV
ISB
Standby current
VST-BY = 1.5 V
-
-
100
A
ISBin
Standby input bias current
VST-BY = 5 V
-
-
10
A
VSBon
Standby On threshold voltage
-
-
-
1.5
V
VSBoff
Standby Off threshold voltage
-
3.5
-
-
V
Standby attenuation
-
--
90
-
dB
Mute input bias current
VMUTE = 5 V
-
-
10
A
ATTST-BY
IM_in
DocID1509 Rev 5
7/13
12
Electrical specifications
TDA7391
Table 5. Electrical characteristics (continued)
Symbol
AM
PO
Parameter
Test condition
Mute attenuation
Min.
Typ.
Max.
Unit
-
90
-
dB
d = 10 %
20
26
-
W
d=1%
-
21
-
W
-
Output power
d = 10 %; RL = 3.2
-
32
-
W
PO EIAJ
(1)
EIAJ output power
VS = 13.7 V; RL = 3.2
-
40
-
W
PO MAX
Max. output power(1)
VS = 14.4 V; RL = 3.2
-
45
-
W
-
-
0.06
-
%
PO = 0.1 to 15 W
-
0.03
-
%
29.5
30
30.5
dB
-
kHz
d
Distortion
GV
Voltage gain
-
fH
High frequency roll-off
PO = 1W; -3dB
75
Differential
36
60
-
k
Single Ended
30
55
-
k
RIN
Input Impedance
EIN
Input noise voltage
Rg = 0 ; f = 22 Hz to 22 kHz
-
4
-
mV
Input common mode rejection
f = 1 kHz; VIN = 1 Vrms
-
65
-
dB
SVR
Supply voltage rejection
Rg = 0 ; Vr = 1 Vrms
-
60
-
dB
CDL
Clipping detection level
-
5
10
15
%
Tsd
Absolute thermal shutdown
junction temperature
-
-
160
-
C
CMRR
1. Saturated square wave output.
Figure 3. Test and application circuit
96
&Q)
&M)
,1
&M)
,1
96
6:
67%<
&
½ )
7'$
5
.ȍ
&M)
287
287
&'
9UHI
5
.ȍ
72M&
*1'
*$3*36
8/13
DocID1509 Rev 5
TDA7391
Electrical specifications
Figure 4. Printed circuit board and component layout of the Figure 4
2.4
Electrical characteristics curves
Figure 5. Quiescent current vs. supply voltage
,TP$
Figure 6. EIAJ power vs. supply voltage
3R:
9L 9UPV
I N+]
5/ ȍ
5/ ȍ
9V9
Figure 7. Output power vs. supply voltage
(RL = 4 )
3R:
9V9
'!0'03
7+'
9V 9
5/ ȍ
3R :
5/ ȍ
I N+]
7+' Figure 8. Distortion vs. frequency (RL = 4 )
'!0'03
7+' 9V9
'!0'03
DocID1509 Rev 5
I+]
'!0'03
9/13
12
Electrical specifications
TDA7391
Figure 9. Output power vs. supply voltage
(RL = 3.2 )
3R:
Figure 10. Distortion vs. frequency
(RL = 3.2 )
7+'
5/ ȍ
I N+]
9V 9
5/ ȍ
3R :
7+' 7+' 9V9
695G%
'!0'03
&055G%
9V 9
9FP 9UPV
5/ ȍ
5J I +]
3WRW:
3WRW
Q
9V 9
5/ ȍ
I N+]
3R:
'!0'03
/HYHOG%
9V 9
5/ ȍ
3 R I +]
Figure 14. Power bandwidth
(II
'!0'03
Figure 13. Total power dissipation and
efficiency vs. output power (RL = 4)
10/13
9V 9
9U 9UPV
5/ ȍ
5J I+]
Figure 12. Common mode rejection vs.
frequency
'!0'03
Figure 11. Supply voltage rejection vs.
frequency
.
'!0'03
DocID1509 Rev 5
I +]
.
'!0'03
TDA7391
3
Package information
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 15. Multiwatt11 (vertical) mechanical data and package dimensions
$)-
INCH
MM
-).
490
-!8
-).
490
-!8
!
"
#
$
/54,).%!.$
-%#(!.)#!,$!4!
%
&
'
'
(
(
,
,
,
,
,
,
-
-
3
3
$IA
-ULTIWATT6ERTICAL
(
'!0'03
DocID1509 Rev 5
11/13
12
Revision history
4
TDA7391
Revision history
Table 6. Document revision history
12/13
Date
Revision
Changes
24-May1998
3
Initial release.
19-Jun-2013
4
Updated Table 3: Absolute maximum ratings on page 7.
18-Sep-2013
5
Updated Disclaimer.
DocID1509 Rev 5
TDA7391
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
ST PRODUCTS ARE NOT DESIGNED OR AUTHORIZED FOR USE IN: (A) SAFETY CRITICAL APPLICATIONS SUCH AS LIFE
SUPPORTING, ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS; (B)
AERONAUTIC APPLICATIONS; (C) AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS, AND/OR (D) AEROSPACE APPLICATIONS
OR ENVIRONMENTS. WHERE ST PRODUCTS ARE NOT DESIGNED FOR SUCH USE, THE PURCHASER SHALL USE PRODUCTS AT
PURCHASER’S SOLE RISK, EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE, UNLESS A PRODUCT IS
EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR “AUTOMOTIVE, AUTOMOTIVE SAFETY OR MEDICAL” INDUSTRY
DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS. PRODUCTS FORMALLY ESCC, QML OR JAN QUALIFIED ARE
DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2013 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
DocID1509 Rev 5
13/13
13
">
