Philips TDA8571J User Manual

INTEGRATED CIRCUITS

DATA SH EET

TDA8571J

4 × 40 W BTLquadcarradiopower
amplifier

Product specification
Supersedes data of 1998 Mar 13

2002 Mar 05

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

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 VP 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 withthe TDA8568Q, except for the gain.

TDA8571J

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 Ω load.

APPLICATIONS

• Primarily developed for car radio applications.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

I

ORM

I

q(tot)

I

stb

I

sw

 input impedance 25 30 − kΩ

Z

i

P

o(EIAJ)

SVRR supply voltage ripple rejection R

α

cs

G

v(cl)

V

n(o)

V

 DC output offset voltage MUTE −−80 mV

OS

∆V

OS

operating supply voltage 6 14.4 18 V
repetitive peak output current −−7.5 A
total quiescent current − 200 − mA
standby current − 0.2 100 µA
switch-on current −−80 µA

EIAJ output power THD = maximum − 40 − W

=0Ω−50 − dB

s

channel separation Rs=10kΩ−50 − dB
closed-loop voltage gain 33 34 35 dB
noise output voltage Rs=0Ω−−170 µV

 delta DC output offset voltage ON ↔ MUTE −−80 mV

ORDERING INFORMATION

TYPE

NUMBER

NAME DESCRIPTION VERSION

PACKAGE

TDA8571J DBS23P plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) SOT411-1

2002 Mar 05 2

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

BLOCK DIAGRAM

handbook, full pagewidth

IN1

IN2

SGND

IN3

MODE

10

11

12

13

V

30 kΩ

30 kΩ

TDA8571J

30 kΩ

P1

TDA8571J

V

P2

V

+

P3

V

P4

23168115

2

OUT1+

−

+

4

OUT1−

−

V

ref

+

7

OUT2+

−

+

5

OUT2−

−

9

DIAGNOSTIC

+

V

DIAG

17

OUT3+

−

+

19

OUT3−

−

14

IN4

30 kΩ

PGND1 PGND2 PGND3 PGND4

Fig.1 Block diagram.

2002 Mar 05 3

V

ref

+

22

OUT4+

−

+

20

OUT4−

−

211863

MGM562

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

PINNING

SYMBOL PIN DESCRIPTION

V

P1

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

V

DIAG

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

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

1 supply voltage 1

8 supply voltage 2
9 diagnostic output

16 supply voltage 3

23 supply voltage 4

handbook, halfpage

V

P1

OUT1+

PGND1

OUT1−
OUT2−

PGND2

OUT2+

V

P2

V

DIAG

IN1
IN2

SGND

IN3
IN4

MODE

V

P3

OUT3+

PGND3

OUT3−
OUT4−

PGND4

OUT4+

V

P4

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

TDA8571J

TDA8571J

MGM563

2002 Mar 05 4

Fig.2 Pin configuration.

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

FUNCTIONAL DESCRIPTION

TheTDA8571Jcontainsfouridenticalamplifierswhichcan
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 µA)

• Mute: input signal suppressed

• Operating: normal on condition.

Since this pin has a low input current (<80 µA), a low cost
supply switch can be applied.

Toavoidswitch-onplops,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).

TDA8571J

HORT-CIRCUIT DIAGNOSTIC

S
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

Whena 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
approximately50 µstodetermine whether the short-circuit
is still present. Due to this duty cycle of 50 µs/10 ms the
average current consumption during this short-circuit
condition is very low.

During this short-circuit condition, pin V
10 ms and HIGH for 50 µs (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.

is continuously LOW.

DIAG

is LOW for

DIAG

Diagnostic output (pin V

D

YNAMIC DISTORTION DETECTOR (DDD)

DIAG

)

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

is independent of the number of channels that

DIAG

are clipping (see Fig.4).

+V

handbook, halfpage

P

10 kΩ

BZX79C/3.9V

MODE

47 µF

MGD959

TEMPERATURE PRE-WARNING
When the virtual junction temperature Tvjreaches 145 °C,

pin V

goes LOW.

DIAG

OPEN-COLLECTOR OUTPUTS
The diagnostic pin has an open-collector output, so more

devicescan be tied together. An external pull-up resistor is
needed.

handbook, halfpage

V

o

V

9

V

0

P

0

MGG155

t

Fig.3 Mode select switch circuitry.

2002 Mar 05 5

Fig.4 Distortion detector waveform.

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

handbook, full pagewidth

short

circuit

current

V

9

short-circuit over the load

V

P

Fig.5 Short-circuit waveform.

TDA8571J

MGG156

t

10 ms

t

50 µs

2002 Mar 05 6

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power

TDA8571J

amplifier

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

P

V

sc(safe)

V

rp

I

OSM

I

ORM

P

tot

T

stg

T

amb

T

vj

THERMAL CHARACTERISTICS

supply voltage operating − 18 V

non-operating − 30 V
load dump protection;

during 50 ms; t

≥ 2.5 ms

r

− 45 V

short-circuit safe voltage − 18 V
reverse polarity voltage − 6V
non-repetitive peak output current − 10 A
repetitive peak output current − 7.5 A
total power dissipation − 60 W
storage temperature −55 +150 °C
ambient temperature −40 +85 °C
virtual junction temperature − 150 °C

SYMBOL PARAMETER VALUE UNIT

R
R

th j-a
th j-c

thermal resistance from junction to ambient in free air 40 K/W
thermal resistance from junction to case (see Fig.6) 1 K/W

handbook, halfpage

OUT1 OUT2 OUT3 OUT4

3.2 K/W

virtual junction

3.2 K/W

0.2 K/W

case

3.2 K/W

3.2 K/W

MGG157

Fig.6 Equivalent thermal resistance network.

2002 Mar 05 7

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power

TDA8571J

amplifier

QUALITY SPECIFICATION

In accordance with

DC CHARACTERISTICS

VP= 14.4 V; T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

I

q(tot)

Operating condition

V

MODE

I

MODE

V

O

Mute condition

V

MODE

V

O

V

 DC output offset voltage MUTE −−80 mV

OS

∆V

 delta DC output offset voltage ON ↔ MUTE −−80 mV

OS

Standby condition

V

MODE

I

stb

Diagnostic

V

DIAG

T

vj

“General Quality Specification For Integrated Circuits (SNW-FQ-611D)”

=25°C; measured in Fig.7; unless otherwise specified.

amb

.

supply voltage note 1 6 14.4 18 V
quiescent current RL= ∞−200 360 mA

mode select switch level 8.5 − V
mode select switch current V

= 14.4 V − 30 80 µA

MODE

p

output voltage note 2 − 7.0 − V

mode select switch level 3.3 − 6.4 V
output voltage note 2 − 7.0 − V

mode select switch level 0 − 2V
standby current − 0.2 100 µA

diagnostic output voltage during any fault condition −−0.6 V
temperature pre-warning V

= 0.6 V − 145 −°C

DIAG

V

Notes

1. The circuit is DC adjusted at V

= 6 to 18 V and AC operating at VP= 8.5 to 18 V.

P

2. At 18 V < VP< 30 V the DC output voltage ≤1⁄2VP.

2002 Mar 05 8

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power

TDA8571J

amplifier

AC CHARACTERISTICS

VP= 14.4 V; RL=4Ω; f = 1 kHz; T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

P

o

P

o(EIAJ)

P

o(max)

output power THD = 0.5% 16 19 − W

EIAJ output power THD = maximum;Vi= 2 V (p-p)

maximum output power THD = maximum; VP= 15.2 V;

THD total harmonic distortion P

B

f

ro(l)

f

ro(h)

G

p

v(cl)

power bandwidth THD = 0.5%; Po= −1 dB with

low frequency roll-off at −1 dB; note 2 − 25 − Hz
high frequency roll-off at −1dB 20 −−kHz
closed-loop voltage gain 33 34 35 dB

SVRR supply voltage ripple rejection R

Z

 input impedance 25 30 38 kΩ

i

V

n(o)

α

cs

∆G

 channel unbalance −−1dB

v

V

o

noise output voltage B = 20 Hz to 20 kHz

channel separation Po= 16 W; Rs=10kΩ 45 −−dB

output signal in mute maximum input voltage

=25°C; measured in Fig.7; unless otherwise specified.

amb

THD = 10% 21 26 − W
V

= 13.7 V; THD = 0.5% − 17.5 − W

P

= 13.7 V; THD = 10% − 23 − W

V

P

35 40 − W

square wave

40 45 − W

Vi= 2 V (p-p) square wave

=1W − 0.1 − %

o

V

= 0.6 V; note 1 − 10 − %

MODE

− 20 to

respect to 16 W

=0Ω; maximum ripple

s

V

= 2 V (p-p)

ripple

on 40 −−dB
mute 50 −−dB
standby 80 −−dB

=0Ω−125 170 µV

on; R

s

on; R

=10kΩ−150 −µV

s

mute; independent of R

s

− 100 −µV

−−2mV

Vi= 1 V (RMS)

− Hz

20000

Notes

1. Dynamic Distortion Detector (DDD) active, pin V

is set to LOW level.

DIAG

2. Frequency response externally fixed.

2002 Mar 05 9

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

TEST AND APPLICATION INFORMATION

handbook, full pagewidth

MODE

V

P1

15

10

470 nF

470 nF

470 nF

IN1

IN2

SGND

IN3

30 kΩ

11

30 kΩ

12

TDA8571J

13

30 kΩ

input 1

input 2

input 3

TDA8571J

V

P

V

+

P2

V

1681

P3

V

P4

23

2

OUT1+

−

+

4

OUT1−

−

V

ref

+

7

OUT2+

−

+

−

DIAGNOSTIC

+

OUT2−

5

10 kΩ

V

9

DIAG

17

OUT3+

−

+

OUT3−

19

−

RL = 4 Ω

RL = 4 Ω

RL = 4 Ω

+14.4 V

2200 µF100 nF

+V

P

diagnostic

output

V

ref

22

OUT4+

RL = 4 Ω

OUT4−

20

input 4

470 nF

IN4

14

+

−

30 kΩ

+

−

211863

PGND1 PGND2 PGND3 PGND4

power ground (substrate)

Specialcare mustbe taken in the PCB-layout to separate pin V
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).

fromthe pins IN1, IN2, IN3and IN4 to minimize thecrosstalk betweenthe clip output

DIAG

MGM564

Fig.7 Application circuit diagram.

2002 Mar 05 10

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power

TDA8571J

amplifier

Test information

Figures 8 to 13 have the following conditions: VP= 14.4 V; RL=4Ω; f = 1 kHz; 80 kHz filter used; unless otherwise
specified.

300

handbook, halfpage

I

P

(mA)

200

100

0

0

MGM566

4

VP (V)

2081216

80

handbook, halfpage

P

o

(W)

60

40

20

0

818

(1)

(2)

(3)

10

12 14 16

MGM567

VP (V)

10

handbook, halfpage

THD + N

(%)

1

−1

10

−2

10

−2

10

Fig.8 IPas a function of VP.

(1)

(2)

(3)

−1

10

11010

MGM568

Po (W)

2

(1) EIAJ; 100 Hz.
(2) THD + N = 10%.
(3) THD + N = 0.5%.

10

handbook, halfpage

THD + N

(%)

1

−1

10

−2

10

10 10

Fig.9 Poas a function of VP.

(1)

(2)

2

3

10

4

10

MGM569

f (Hz)

5

10

(1) f = 10 kHz.
(2) f = 1 kHz.
(3) f = 100 Hz.

Fig.10 THD + N as a function of Po.

2002 Mar 05 11

(1) Po=1W.
(2) Po=10W.

Fig.11 THD + N as a function of frequency.

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

−20

handbook, halfpage

SVRR

(dB)

−40

−60

−80

10

2

10

3

10

MGM570

4

10

f (Hz)

5

10

TDA8571J

−30

handbook, halfpage

α

cs

(dB)

−50

−70

−90

10

(1) Between channels 1 and 2 or between channels 3 and 4.
(2) Between channels 1 or 2 and channels 3 or 4.

2

10

3

10

(1)

(2)

4

10

f (Hz)

MGM565

5

10

Fig.12 SVRR as a function of frequency.

Fig.13 Channel separation as a function of

frequency.

2002 Mar 05 12

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

PCB layout

handbook, full pagewidth

78.74

TDA8571J

111.76

Pgnd

V

P

2200 µF

100 nF

−

−

out1

+

470 nF

−

out2

+

10 kΩ

Dimensions in mm.

diag in

12 34

Fig.14 PCB layout (component side).

2002 Mar 05 13

sgnd

−

out 4

+

470 nF

−

out 3

+

in mode

MGK079

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

handbook, full pagewidth

78.74

TDA8571J

111.76

−

out 4

+

470 nF

−

out 3

+

inmode

sgnd

Dimensions in mm.

Fig.15 PCB layout (soldering side).

2002 Mar 05 14

470 nF

100nF

1234

Pgnd

2200 µF

−

V

P

−

out1

+

−

out2

+

diagin

10 kΩ

MGK080

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

PACKAGE OUTLINE

DBS23P: plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm)

non-concave

x

D

E

h

view B: mounting base side

A

d

β

2

A
A

TDA8571J

SOT411-1

D

h

5

4

E

B

j

L

2

L

L

123

e

Z

DIMENSIONS (mm are the original dimensions)

UNIT A

mm

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

4.6

4.3

A

2

1.15

0.85

4

1.65

1.35

bpcD

A

5

0.75

0.60

0.55

0.35

1

e

(1)

deD

30.4

28.0

27.5

12 2.54

29.9

w M

b

p

(1)

E

h

12.2

11.8

0 5 10 mm

scale

e

1.27

e

1

5.08

E

E

2

h

1

10.15

6

9.85

E

6.2

5.8

2

1.85

1.65

3

1

L

Q

m

LL

L

L

1

2

3.6

2.8

14.0

13.0

10.7

9.9

2.4

1.6

2

c

e

2

m

Qj

3

2.1

4.3

1.8

E

E

1

v M

(1)

Z

0.6

w

v

0.25

0.03x45°

β

1.43

0.78

OUTLINE
VERSION

SOT411-1

IEC JEDEC EIAJ

REFERENCES

2002 Mar 05 15

EUROPEAN

PROJECTION

ISSUE DATE

96-10-11
98-02-20

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

SOLDERING
Introduction to soldering through-hole mount

packages

This text gives a brief insight to wave, dip and manual
soldering.Amorein-depthaccountofsolderingICscanbe
found in our

Packages”

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.

Suitability of through-hole mount IC packages for dipping and wave soldering methods

DBS, DIP, HDIP, SDIP, SIL suitable suitable

“Data Handbook IC26; Integrated Circuit

(document order number 9398 652 90011).

PACKAGE

Thetotalcontact 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
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.

SOLDERING METHOD

DIPPING WAVE

(1)

TDA8571J

). If the

stg(max)

Note

1. For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board.

2002 Mar 05 16

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power

TDA8571J

amplifier

DATA SHEET STATUS

PRODUCT

DATA SHEET STATUS

Objective data Development This data sheet contains data from the objective specification for product

Preliminary data Qualification This data sheet contains data from the preliminary specification.

Product data Production This data sheet contains data from the product specification. Philips

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.

(1)

STATUS

(2)

development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.

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.

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

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
attheseoratanyotherconditionsabovethosegiveninthe
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
norepresentation 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
Semiconductorscustomers 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
theuseof any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products,andmakesnorepresentationsor warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.

2002 Mar 05 17

Philips Semiconductors Product specification

4 × 40 W BTL quad car radio power
amplifier

TDA8571J

NOTES

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 – a w orldwide compan y

Contact information

For additional information please visit http://www.semiconductors.philips.com. Fax: [phone]
For sales offices addresses send e-mail to: [e-mail].

© Koninklijke Philips Electronics N.V. 2002
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.

Printed in The Netherlands 753503/02/pp20 Date of release: 2002 Mar 05 Document order number: 9397 750 09411

SCA74