Philips TDA8561Q-N2-S1, TDA8561Q-N2, TDA8561Q-N1-S1, TDA8561Q-N1 Datasheet

DATA SH EET

Product specification
Supersedes data of 1997 Sep 22
File under Integrated Circuits, IC01

1999 Jun 30

INTEGRATED CIRCUITS

TDA8561Q

2 × 24 W BTL or 4 × 12 W
single-ended car radio power
amplifier

1999 Jun 30 2

Philips Semiconductors Product specification

2 × 24 W BTL or 4 × 12 W single-ended
car radio power amplifier

TDA8561Q

FEATURES

• Requires very few external components

• High output power

• Flexibility in use; Quad single-ended or stereo BTL

• Low output offset voltage

• Fixed gain

• Diagnostic facility (distortion, short-circuit and

temperature detection)

• Good ripple rejection

• Mode select switch (operating, mute and standby)

• Load dump protection

• AC and DC short-circuit safe to ground and to V

P

• 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

• Identical inputs (inverting and non-inverting).

GENERAL DESCRIPTION

The TDA8561Q is an integrated class-B output amplifier in
a 17-lead single-in-line (SIL) power package. It contains
4 × 12 W Single-Ended (SE) or 2 × 24 W Bridge-Tied
Load (BTL) amplifiers.

The device is primarily developed for car radio
applications.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

positive operating supply voltage 6 14.4 18 V

I

ORM

repetitive peak output current −−4A

I

P

total quiescent current − 80 − mA

I

sb

standby current − 0.1 100 µA

Stereo BTL application

P

o

output power RL=4Ω; THD = 10% − 24 − W
RR supply voltage ripple rejection 46 −−dB
V

no

noise output voltage Rs=0Ω−70 −µV
Z

I

 input impedance 25 −−kΩ

∆V

O

| DC output offset voltage −−150 mV

Quad single-ended application

P

o

output power THD = 10%

R

L

=4Ω−7−W

R

L

=2Ω−12 − W
RR supply voltage ripple rejection 46 −−dB
V

no

noise output voltage Rs=0Ω−50 −µV

Z

I

 input impedance 50 −−kΩ

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA8561Q DBS17P plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) SOT243-1

1999 Jun 30 3

Philips Semiconductors Product specification

2 × 24 W BTL or 4 × 12 W single-ended
car radio power amplifier

TDA8561Q

BLOCK DIAGRAM

Fig.1 Block diagram.

mode
select

switch

MEA858 - 1

output 1

15 kΩ

15 kΩ

x1

VA

stand-by

switch

V

P

mute
switch

stand-by
reference
voltage

5

13

V

P1

V

P2

18 kΩ

2

kΩ

mute switch

VA

C

m

power stage

18 kΩ

mute switch

VA

C

m

power stage

6

8

14

18 kΩ

mute switch

VA

C

m

power stage

18 kΩ

mute switch

VA

C

m

power stage

12

10

2711

ground
(signal)

GND1 GND2

power ground (substrate)

output 4

output 3

output 2

non-inverting

input 1

non-inverting

input 4

17

1

TDA8561Q

mute
reference
voltage

input
reference
voltage

2

kΩ

60
kΩ

60
kΩ

inverting

input 2

3

PROTECTIONS

thermal

short-circuit

diagnostic

output

16

4

supply voltage
ripple rejection

inverting

input 3

15

2

kΩ

60
kΩ

2

kΩ

60
kΩ

9

not connected

1999 Jun 30 4

Philips Semiconductors Product specification

2 × 24 W BTL or 4 × 12 W single-ended
car radio power amplifier

TDA8561Q

PINNING

SYMBOL PIN DESCRIPTION

−INV 1 1 non-inverting input 1
GND(S) 2 signal ground
INV 2 3 inverting input 2
RR 4 supply voltage ripple rejection
V

P1

5 supply voltage
OUT 1 6 output1
GND1 7 power ground 1
OUT 2 8 output2
n.c. 9 not connected
OUT 3 10 output 3
GND2 11 power ground 2
OUT 4 12 output 4
V

P2

13 supply voltage
MODE 14 mode select switch input
INV 3 15 inverting input 3
V

DIAG

16 diagnostic output

−INV 4 17 non-inverting input 4

Fig.2 Pin configuration.

1
2
3
4
5
6
7
8

9
10
11
12

13
14
15
16

17

TDA8561Q

INV 1

GND(S)

INV 2

RR

OUT 1

GND1

OUT 2

n.c.

OUT 3

GND2

OUT 4

V

MODE

INV 3
DIAG
INV 4

P2

V

P1

MEA859 - 1

V

1999 Jun 30 5

Philips Semiconductors Product specification

2 × 24 W BTL or 4 × 12 W single-ended
car radio power amplifier

TDA8561Q

FUNCTIONAL DESCRIPTION

The TDA8561Q contains four identical amplifiers and can
be used for Single-Ended (SE) or Bridge-Tied Load (BTL)
applications. The gain of each amplifier is fixed at 20 dB
(26 dB in BTL). Special features of the device are:

Mode select switch (pin 14)

• Low standby current (<100 µA)

• Low switching current (low cost supply switch)

• Mute facility.

To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during ≥100 ms (charging of the input
capacitors at pins 1, 3, 15 and 17). This can be achieved
by:

• Microcontroller control

• External timing circuit (see Fig.11).

Diagnostic output (pin 16)

D

YNAMIC DISTORTION DETECTOR (DDD)

At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin 16
goes LOW. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and thus limit the distortion. The output level of
pin 16 is independent of the number of channels that are
clipping (see Figs 3 and 4).

S

HORT-CIRCUIT PROTECTION

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
20 ms, after removal of the short-circuit. During this
short-circuit condition, pin 16 is continuously LOW.

When a short-circuit across the load of one or both
channels occurs the output stages are switched off for
approximately 20 ms. After that time it is checked during
approximately 50 µs to see whether the short-circuit is still
present. Due to this duty cycle of 50 µs/20 ms the average
current consumption during this short-circuit condition is
very low (approximately 40 mA).

During this short-circuit condition, pin 16 is LOW for 20 ms
and HIGH for 50 µs (see Fig.5).

The power dissipation in any short-circuit condition is very
low.

Fig.3 Distortion detector waveform; BTL

application.

handbook, halfpage

V

0

V

P

V

O

0

t

MGA705

16

Fig.4 Distortion detector waveform; single-ended

application.

handbook, halfpage

0

V

P

V

O

t

0

MGA706

V

16

1999 Jun 30 6

Philips Semiconductors Product specification

2 × 24 W BTL or 4 × 12 W single-ended
car radio power amplifier

TDA8561Q

TEMPERATURE DETECTION
When the virtual junction temperature Tvjreaches 150 °C, pin 16 will be active LOW.

O

PEN-COLLECTOR OUTPUT

Pin 16 is an open-collector output, which allows pin 16 of more devices being tied together.

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

v

P

positive supply voltage

operating − 18 V
non-operating − 30 V
load dump protection during 50 ms; t

r

≥ 2.5 ms − 45 V

I

OSM

non-repetitive peak output current − 6A

I

ORM

repetitive peak output current − 4A

T

stg

storage temperature −55 +150 °C

T

amb

operating ambient temperature −40 +85 °C

T

vj

virtual junction temperature − 150 °C

V

psc

AC and DC short-circuit safe voltage − 18 V

V

pr

reverse polarity − 6V

P

tot

total power dissipation − 60 W

Fig.5 Short-circuit waveform.

handbook, full pagewidth

MGL214

short-circuit over the load

20 ms

50 µs

t

t

V

P

current

in

output

stage

V

16

1999 Jun 30 7

Philips Semiconductors Product specification

2 × 24 W BTL or 4 × 12 W single-ended
car radio power amplifier

TDA8561Q

THERMAL CHARACTERISTICS

In accordance with IEC 747-1.

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 Figs 6 and 7) 1.3 K/W

Fig.6 Equivalent thermal resistance network;

BTL application.

handbook, halfpage

2.2 K/W

0.2 K/W

2.2 K/W

virtual junction

output 1 output 2

case

MEA861 - 1

Fig.7 Equivalent thermal resistance network;

single-ended application.

handbook, halfpage

3.0 K/W

0.7 K/W

3.0 K/W

virtual junction

output 1 output 2

case

3.0 K/W

0.7 K/W

3.0 K/W

output 3 output 4

MEA860 - 2

0.2 K/W

1999 Jun 30 8

Philips Semiconductors Product specification

2 × 24 W BTL or 4 × 12 W single-ended
car radio power amplifier

TDA8561Q

DC CHARACTERISTICS

V

P

= 14.4 V; T

amb

=25°C; measured in Fig.8; unless otherwise specified.

Notes

1. The circuit is DC adjusted at V

P

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

2. At 18V<VP< 30 V the DC output voltage ≤0.5VP.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

positive supply voltage note 1 6 14.4 18 V

I

P

total quiescent current − 80 160 mA

V

O

DC output voltage note 2 − 6.9 − V

∆V

O

 DC output offset voltage −−150 mV

Mode select switch

V

on

switch-on voltage level 8.5 −−V
MUTE CONDITION
V

mute

mute voltage 3.3 − 6.4 V
V

O

output voltage in mute position V

Imax

= 1 V; f = 1 kHz −−2mV

∆V

O

 DC output offset voltage (between

pins 6 to 8 and 10 to 12)

−−150 mV

STANDBY CONDITION
V

sb

standby voltage 0 − 2V
I

sb

standby current −−100 µA
I

sw

switch-on current − 12 40 µA

Diagnostic output (pin 16)

V

DIAG

diagnostic output voltage any short-circuit or clipping −−0.6 V