Document Outline
- FEATURES
- QUICK REFERENCE DATA
- ORDERING INFORMATION
- GENERAL DESCRIPTION
- APPLICATIONS
- BLOCK DIAGRAM
- PINNING
- FUNCTIONAL DESCRIPTION
- LIMITING VALUES
- THERMAL CHARACTERISTICS
- QUALITY SPECIFICATION
- DC CHARACTERISTICS
- AC CHARACTERISTICS
- TEST AND APPLICATION INFORMATION
- PACKAGE OUTLINE
- SOLDERING
- DATA SHEET STATUS
- DEFINITIONS
- DISCLAIMERS
DATA SHEET
Product specification
Supersedes data of 1998 Mar 13
2002 Mar 05
INTEGRATED CIRCUITS
TDA8571J
4
40 W BTL quad car radio power
amplifier
2002 Mar 05
2
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
FEATURES
Requires very few external components
High output power
Low output offset voltage
Fixed gain
Diagnostic facility (distortion, short-circuit and
temperature pre-warning)
Good ripple rejection
Mode select switch (operating, mute and standby)
Load dump protection
Short-circuit safe to ground and to V
P
and across the
load
Low power dissipation in any short-circuit condition
Thermally protected
Reverse polarity safe
Electrostatic discharge protection
No switch-on/switch-off plop
Flexible leads
Low thermal resistance
Pin compatible with the TDA8568Q, except for the gain.
GENERAL DESCRIPTION
The TDA8571J is a integrated class-B output amplifier
contained in a 23-lead Single-In-Line (SIL) plastic power
package. It contains four amplifiers in a BTL configuration,
each with a gain of 34 dB. The output power is 4
40 W
(EIAJ) into a 4
load.
APPLICATIONS
Primarily developed for car radio applications.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
operating supply voltage
6
14.4
18
V
I
ORM
repetitive peak output current
-
-
7.5
A
I
q(tot)
total quiescent current
-
200
-
mA
I
stb
standby current
-
0.2
100
A
I
sw
switch-on current
-
-
80
A
Z
i
input impedance
25
30
-
k
P
o(EIAJ)
EIAJ output power
THD = maximum
-
40
-
W
SVRR
supply voltage ripple rejection
R
s
= 0
-
50
-
dB
cs
channel separation
R
s
= 10 k
-
50
-
dB
G
v(cl)
closed-loop voltage gain
33
34
35
dB
V
n(o)
noise output voltage
R
s
= 0
-
-
170
V
V
OS
DC output offset voltage
MUTE
-
-
80
mV
V
OS
delta DC output offset voltage
ON
MUTE
-
-
80
mV
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA8571J
DBS23P
plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm)
SOT411-1
2002 Mar 05
3
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MGM562
OUT1
+
OUT1
-
+
-
+
-
Vref
2
IN1
IN2
4
23
16
8
1
15
10
MODE
VP1
VP2
VP3
VP4
21
18
6
3
PGND1
PGND2
PGND3
PGND4
30 k
OUT2
+
OUT2
-
+
-
+
-
7
5
11
30 k
OUT3
+
OUT3
-
+
-
+
-
Vref
17
IN3
SGND
TDA8571J
IN4
19
13
12
30 k
OUT4
+
OUT4
-
+
-
+
-
22
20
14
30 k
VDIAG
DIAGNOSTIC
9
2002 Mar 05
4
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
PINNING
SYMBOL
PIN
DESCRIPTION
V
P1
1
supply voltage 1
OUT1+
2
output 1+
PGND1
3
power ground 1
OUT1
-
4
output 1
-
OUT2
-
5
output 2
-
PGND2
6
power ground 2
OUT2+
7
output 2+
V
P2
8
supply voltage 2
V
DIAG
9
diagnostic output
IN1
10
input 1
IN2
11
input 2
SGND
12
signal ground
IN3
13
input 3
IN4
14
input 4
MODE
15
mode select switch input
V
P3
16
supply voltage 3
OUT3+
17
output 3+
PGND3
18
power ground 3
OUT3
-
19
output 3
-
OUT4
-
20
output 4
-
PGND4
21
power ground 4
OUT4+
22
output 4+
V
P4
23
supply voltage 4
Fig.2 Pin configuration.
handbook, halfpage
TDA8571J
MGM563
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
VP1
OUT1
+
PGND1
OUT1
-
OUT2
-
PGND2
OUT2
+
VP2
VDIAG
IN1
IN2
SGND
IN3
IN4
MODE
VP3
OUT3
+
PGND3
OUT3
-
OUT4
-
PGND4
OUT4
+
VP4
2002 Mar 05
5
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
FUNCTIONAL DESCRIPTION
The TDA8571J contains four identical amplifiers which can
be used for bridge applications. The gain of each amplifier
is fixed at 34 dB.
Mode select switch (pin MODE)
Standby: low supply current (<100
A)
Mute: input signal suppressed
Operating: normal on condition.
Since this pin has a low input current (<80
A), a low cost
supply switch can be applied.
To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during
150 ms (charging of the input
capacitors at pins IN1, IN2, IN3 and IN4. When switching
from standby to mute, the slope should be at least 18 V/s.
This can be realized by:
Microprocessor control
External timing circuit (see Fig.3).
Diagnostic output (pin V
DIAG
)
D
YNAMIC
D
ISTORTION
D
ETECTOR
(DDD)
At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin V
DIAG
goes LOW. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and so limit the distortion. The output level of
pin V
DIAG
is independent of the number of channels that
are clipping (see Fig.4).
S
HORT
-
CIRCUIT DIAGNOSTIC
When a short-circuit occurs at one or more outputs to
ground or to the supply voltage, the output stages are
switched off until the short-circuit is removed and the
device is switched on again, with a delay of approximately
10 ms after removal of the short-circuit. During this
short-circuit condition, pin V
DIAG
is continuously LOW.
When a short-circuit occurs across the load of one or more
channels, the output stages are switched off during
approximately 10 ms. After that time it is checked during
approximately 50
s to determine whether the short-circuit
is still present. Due to this duty cycle of 50
s/10 ms the
average current consumption during this short-circuit
condition is very low.
During this short-circuit condition, pin V
DIAG
is LOW for
10 ms and HIGH for 50
s (see Fig.5). The protection
circuits of all channels are coupled. This means that if a
short-circuit condition occurs in one of the channels, all
channels are switched off. Consequently, the power
dissipation in any short-circuit condition is very low.
T
EMPERATURE PRE
-
WARNING
When the virtual junction temperature T
vj
reaches 145
C,
pin V
DIAG
goes LOW.
O
PEN
-
COLLECTOR OUTPUTS
The diagnostic pin has an open-collector output, so more
devices can be tied together. An external pull-up resistor is
needed.
Fig.3 Mode select switch circuitry.
handbook, halfpage
+
VP
MODE
MGD959
BZX79C/3.9V
10 k
47
F
Fig.4 Distortion detector waveform.
handbook, halfpage
V9
0
VP
Vo
0
t
MGG155
2002 Mar 05
6
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
Fig.5 Short-circuit waveform.
handbook, full pagewidth
MGG156
short-circuit over the load
10 ms
50
s
t
t
VP
short
circuit
current
V9
2002 Mar 05
7
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
V
P
supply voltage
operating
-
18
V
non-operating
-
30
V
load dump protection;
during 50 ms; t
r
2.5 ms
-
45
V
V
sc(safe)
short-circuit safe voltage
-
18
V
V
rp
reverse polarity voltage
-
6
V
I
OSM
non-repetitive peak output current
-
10
A
I
ORM
repetitive peak output current
-
7.5
A
P
tot
total power dissipation
-
60
W
T
stg
storage temperature
-
55
+150
C
T
amb
ambient temperature
-
40
+85
C
T
vj
virtual junction temperature
-
150
C
SYMBOL
PARAMETER
VALUE
UNIT
R
th j-a
thermal resistance from junction to ambient in free air
40
K/W
R
th j-c
thermal resistance from junction to case (see Fig.6)
1
K/W
handbook, halfpage
3.2 K/W
0.2 K/W
3.2 K/W
3.2 K/W
3.2 K/W
virtual junction
OUT1
OUT2
OUT3
OUT4
case
MGG157
Fig.6 Equivalent thermal resistance network.
2002 Mar 05
8
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
QUALITY SPECIFICATION
In accordance with
"General Quality Specification For Integrated Circuits (SNW-FQ-611D)".
DC CHARACTERISTICS
V
P
= 14.4 V; T
amb
= 25
C; measured in Fig.7; unless otherwise specified.
Notes
1. The circuit is DC adjusted at V
P
= 6 to 18 V and AC operating at V
P
= 8.5 to 18 V.
2. At 18 V < V
P
< 30 V the DC output voltage
1
/
2
V
P
.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
V
P
supply voltage
note 1
6
14.4
18
V
I
q(tot)
quiescent current
R
L
=
-
200
360
mA
Operating condition
V
MODE
mode select switch level
8.5
-
V
p
V
I
MODE
mode select switch current
V
MODE
= 14.4 V
-
30
80
A
V
O
output voltage
note 2
-
7.0
-
V
Mute condition
V
MODE
mode select switch level
3.3
-
6.4
V
V
O
output voltage
note 2
-
7.0
-
V
V
OS
DC output offset voltage
MUTE
-
-
80
mV
V
OS
delta DC output offset voltage
ON
MUTE
-
-
80
mV
Standby condition
V
MODE
mode select switch level
0
-
2
V
I
stb
standby current
-
0.2
100
A
Diagnostic
V
DIAG
diagnostic output voltage
during any fault condition
-
-
0.6
V
T
vj
temperature pre-warning
V
DIAG
= 0.6 V
-
145
-
C
2002 Mar 05
9
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
AC CHARACTERISTICS
V
P
= 14.4 V; R
L
= 4
; f = 1 kHz; T
amb
= 25
C; measured in Fig.7; unless otherwise specified.
Notes
1. Dynamic Distortion Detector (DDD) active, pin V
DIAG
is set to LOW level.
2. Frequency response externally fixed.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
P
o
output power
THD = 0.5%
16
19
-
W
THD = 10%
21
26
-
W
V
P
= 13.7 V; THD = 0.5%
-
17.5
-
W
V
P
= 13.7 V; THD = 10%
-
23
-
W
P
o(EIAJ)
EIAJ output power
THD = maximum; V
i
= 2 V (p-p)
square wave
35
40
-
W
P
o(max)
maximum output power
THD = maximum; V
P
= 15.2 V;
V
i
= 2 V (p-p) square wave
40
45
-
W
THD
total harmonic distortion
P
o
= 1 W
-
0.1
-
%
V
MODE
=
0.6 V; note 1
-
10
-
%
B
p
power bandwidth
THD = 0.5%; P
o
=
-
1 dB with
respect to 16 W
-
20 to
20000
-
Hz
f
ro(l)
low frequency roll-off
at
-
1 dB; note 2
-
25
-
Hz
f
ro(h)
high frequency roll-off
at
-
1 dB
20
-
-
kHz
G
v(cl)
closed-loop voltage gain
33
34
35
dB
SVRR
supply voltage ripple rejection R
s
= 0
; maximum ripple
V
ripple
= 2 V (p-p)
on
40
-
-
dB
mute
50
-
-
dB
standby
80
-
-
dB
Z
i
input impedance
25
30
38
k
V
n(o)
noise output voltage
B = 20 Hz to 20 kHz
on; R
s
= 0
-
125
170
V
on; R
s
= 10 k
-
150
-
V
mute; independent of R
s
-
100
-
V
cs
channel separation
P
o
= 16 W; R
s
= 10 k
45
-
-
dB
G
v
channel unbalance
-
-
1
dB
V
o
output signal in mute
maximum input voltage
V
i
= 1 V (RMS)
-
-
2
mV
2002 Mar 05
10
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
TEST AND APPLICATION INFORMATION
Fig.7 Application circuit diagram.
Special care must be taken in the PCB-layout to separate pin V
DIAG
from the pins IN1, IN2, IN3 and IN4 to minimize the crosstalk between the clip output
and the inputs.
To avoid switch-on plops, it is advised to keep the amplifier in the mute mode during a period of
150 ms (charging the input capacitors at pins IN1,
IN2, IN3 and IN4).
handbook, full pagewidth
MGM564
OUT1
+
RL = 4
OUT1
-
+
-
+
-
Vref
2
IN1
input 1
IN2
input 2
4
15
10
MODE
2200
F
100 nF
23
+
14.4 V
16
8
1
VP1
VP2
VP3
VP4
VP
30 k
OUT2
+
RL = 4
OUT2
-
+
-
+
-
7
5
11
30 k
21
18
6
3
PGND1
PGND2
PGND3
PGND4
power ground (substrate)
OUT3
+
RL = 4
OUT3
-
+
-
+
-
Vref
17
IN3
SGND
TDA8571J
input 3
IN4
input 4
19
13
12
30 k
OUT4
+
RL = 4
OUT4
-
+
-
+
-
22
20
14
30 k
10 k
VDIAG
+
VP
DIAGNOSTIC
diagnostic
output
9
470 nF
470 nF
470 nF
470 nF
2002 Mar 05
11
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
Test information
Figures 8 to 13 have the following conditions: V
P
= 14.4 V; R
L
= 4
; f = 1 kHz; 80 kHz filter used; unless otherwise
specified.
Fig.8 I
P
as a function of V
P
.
handbook, halfpage
0
300
200
100
0
4
VP (V)
IP
(mA)
20
8
12
16
MGM566
Fig.9 P
o
as a function of V
P
.
(1) EIAJ; 100 Hz.
(2) THD + N = 10%.
(3) THD + N = 0.5%.
handbook, halfpage
8
18
80
60
0
20
40
10
Po
(W)
VP (V)
12
14
16
MGM567
(3)
(1)
(2)
Fig.10 THD + N as a function of P
o
.
(1) f = 10 kHz.
(2) f = 1 kHz.
(3) f = 100 Hz.
handbook, halfpage
10
1
Po (W)
10
-
1
10
-
2
MGM568
10
-
2
10
-
1
1
10
10
2
THD
+
N
(%)
(1)
(2)
(3)
Fig.11 THD + N as a function of frequency.
(1) P
o
= 1 W.
(2) P
o
= 10 W.
handbook, halfpage
10
1
f (Hz)
10
-
1
10
-
2
MGM569
10
10
2
10
3
10
4
10
5
THD
+
N
(%)
(1)
(2)
2002 Mar 05
12
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
Fig.12 SVRR as a function of frequency.
handbook, halfpage
-
80
-
60
-
40
-
20
MGM570
10
f (Hz)
SVRR
(dB)
10
2
10
3
10
4
10
5
Fig.13 Channel separation as a function of
frequency.
(1) Between channels 1 and 2 or between channels 3 and 4.
(2) Between channels 1 or 2 and channels 3 or 4.
handbook, halfpage
-
90
-
70
-
50
-
30
MGM565
10
(1)
(2)
f (Hz)
cs
(dB)
10
2
10
3
10
4
10
5
2002 Mar 05
13
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
PCB layout
Fig.14 PCB layout (component side).
handbook, full pagewidth
MGK079
Pgnd
2200
F
100 nF
470 nF
10 k
diag
in
1
2
3
4
in
mode
out 4
out 3
sgnd
470 nF
out1
out2
VP
-
+
-
+
-
+
-
+
-
78.74
111.76
Dimensions in mm.
2002 Mar 05
14
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
Fig.15 PCB layout (soldering side).
handbook, full pagewidth
MGK080
Pgnd
2200
F
100nF
470 nF
10 k
diag
in
1
2
3
4
in
mode
out 4
out 3
sgnd
470 nF
out1
out2
VP
-
+
-
+
-
+
-
+
-
78.74
111.76
Dimensions in mm.
2002 Mar 05
15
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
PACKAGE OUTLINE
UNIT A
2
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
mm
4.6
4.3
A
4
1.15
0.85
A
5
1.65
1.35
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT411-1
96-10-11
98-02-20
0
5
10 mm
scale
D
L
L
1
L
2
E
2
E
c
A
4
A
5
A
2
m
L
3
E
1
Q
w
M
b
p
1
d
Z
e
2
e
e
1
23
j
DBS23P: plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm)
SOT411-1
v
M
D
x
h
Eh
non-concave
view B: mounting base side
B
e
1
b
p
c
D
(1)
E
(1)
Z
(1)
d
e
D
h
L
L
3
m
0.75
0.60
0.55
0.35
30.4
29.9
28.0
27.5
12
2.54
12.2
11.8
10.15
9.85
1.27
e
2
5.08
2.4
1.6
E
h
6
E
1
14.0
13.0
L
1
10.7
9.9
L
2
6.2
5.8
E
2
1.43
0.78
2.1
1.8
1.85
1.65
4.3
3.6
2.8
Q
j
0.25
w
0.6
v
0.03
x
45
2002 Mar 05
16
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
SOLDERING
Introduction to soldering through-hole mount
packages
This text gives a brief insight to wave, dip and manual
soldering. A more in-depth account of soldering ICs can be
found in our
"Data Handbook IC26; Integrated Circuit
Packages" (document order number 9398 652 90011).
Wave soldering is the preferred method for mounting of
through-hole mount IC packages on a printed-circuit
board.
Soldering by dipping or by solder wave
The maximum permissible temperature of the solder is
260
C; solder at this temperature must not be in contact
with the joints for more than 5 seconds.
The total contact time of successive solder waves must not
exceed 5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
stg(max)
). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Manual soldering
Apply the soldering iron (24 V or less) to the lead(s) of the
package, either below the seating plane or not more than
2 mm above it. If the temperature of the soldering iron bit
is less than 300
C it may remain in contact for up to
10 seconds. If the bit temperature is between
300 and 400
C, contact may be up to 5 seconds.
Suitability of through-hole mount IC packages for dipping and wave soldering methods
Note
1. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board.
PACKAGE
SOLDERING METHOD
DIPPING
WAVE
DBS, DIP, HDIP, SDIP, SIL
suitable
suitable
(1)
2002 Mar 05
17
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
DATA SHEET STATUS
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DATA SHEET STATUS
(1)
PRODUCT
STATUS
(2)
DEFINITIONS
Objective data
Development
This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data
Qualification
This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Product data
Production
This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
DEFINITIONS
Short-form specification
The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition
Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Application information
Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.
DISCLAIMERS
Life support applications
These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductors customers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes
Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
2002 Mar 05
18
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
NOTES
2002 Mar 05
19
Philips Semiconductors
Product specification
4
40 W BTL quad car radio power
amplifier
TDA8571J
NOTES
Koninklijke Philips Electronics N.V. 2002
SCA74
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Philips Semiconductors a worldwide company
Contact information
For additional information please visit http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Printed in The Netherlands
753503/02/pp
20
Date of release:
2002 Mar 05
Document order number:
9397 750 09411
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