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

INTEGRATED CIRCUITS

DATA SHEET

TDA8561Q

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

Product specification

1999 Jun 30

Supersedes data of 1997 Sep 22

File under Integrated Circuits, IC01

Philips Semiconductors	Product specification

2 × 24 W BTL or 4 × 12 W single-ended

TDA8561Q

car radio power amplifier

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 VP

·Low power dissipation in any short-circuit condition

·Thermally protected

QUICK REFERENCE DATA

·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.

SYMBOL		PARAMETER		CONDITIONS	MIN.	TYP.	MAX.		UNIT
VP	positive operating supply voltage				6	14.4	18		V
IORM	repetitive peak output current				-	-	4		A
IP	total quiescent current				-	80	-		mA
Isb	standby current				-	0.1	100		mA
Stereo BTL application
Po	output power			RL = 4 W; THD = 10%	-	24	-		W
RR	supply voltage ripple rejection				46	-	-		dB
Vno	noise output voltage			Rs = 0 W	-	70	-		mV
ïZIï	input impedance				25	-	-		kW
ïDVO|ï	DC output offset voltage				-	-	150		mV
Quad single-ended application
Po	output power			THD = 10%
				RL = 4 W	-	7	-		W
				RL = 2 W	-	12	-		W
RR	supply voltage ripple rejection				46	-	-		dB
Vno	noise output voltage			Rs = 0 W	-	50	-		mV
ïZIï	input impedance				50	-	-		kW
ORDERING INFORMATION
TYPE				PACKAGE
NUMBER		NAME		DESCRIPTION				VERSION
TDA8561Q		DBS17P	plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)					SOT243-1

1999 Jun 30

2

Philips Semiconductors

Product specification

2 × 24 W BTL or 4 × 12 W single-ended

TDA8561Q

car radio power amplifier

BLOCK DIAGRAM

non-inverting input 1

inverting input 2

supply voltage ripple rejection

non-inverting input 4

inverting input 3

				VP1	VP2
1				5	13
		mute switch	Cm
	60			TDA8561Q
	kΩ
		VA			6	output 1
	2
	kΩ
		18 kΩ		power stage
		mute switch	Cm
	60
3	kΩ
					8
		VA				output 2
	2
	kΩ
		18 kΩ		power stage
		VP
					14	mode
						select
		stand-by
						switch
		switch		stand-by
				reference
		VA		voltage
		PROTECTIONS
			thermal	mute
		15 kΩ	short-circuit
				switch
		x1			16	diagnostic
4		15 kΩ				output
		mute
		reference
17		voltage
		mute switch	Cm
	60
	kΩ
		VA			12	output 4
	2
	kΩ
		18 kΩ		power stage
		mute switch	Cm
	60
15	kΩ
					10
		VA				output 3
	2
	kΩ
	input	18 kΩ		power stage
	reference
2	voltage	9	7	11
			GND1	GND2	MEA858 - 1
ground		not connected		power ground (substrate)
(signal)

Fig.1 Block diagram.

1999 Jun 30

3

Philips Semiconductors

Product specification

2 × 24 W BTL or 4 × 12 W single-ended

TDA8561Q

car radio power amplifier

PINNING
SYMBOL	PIN	DESCRIPTION
−INV 1	1	non-inverting input 1
GND(S)	2	signal ground						INV 1
									1
INV 2	3	inverting input 2		GND(S)
									2
RR	4	supply voltage ripple rejection						INV 2
									3
VP1	5	supply voltage						RR
									4
OUT 1	6	output 1
								V P1
									5
GND1	7	power ground 1
						OUT 1
									6
OUT 2	8	output 2
							GND1
n.c.	9	not connected							7
OUT 3	10	output 3				OUT 2
									8
GND2	11	power ground 2						n.c.		TDA8561Q
									9
OUT 4	12	output 4				OUT 3
									10
VP2	13	supply voltage
							GND2		11
MODE	14	mode select switch input
						OUT 4			12
INV 3	15	inverting input 3
								V P2
VDIAG	16	diagnostic output							13
−INV 4	17	non-inverting input 4				MODE			14
								INV 3
									15
					V DIAG
									16
								INV 4
									17
										MEA859 - 1
				Fig.2 Pin configuration.

1999 Jun 30

4

Philips Semiconductors

Product specification

2 × 24 W BTL or 4 × 12 W single-ended

TDA8561Q

car radio power amplifier

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:

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

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

Mode select switch (pin 14)

·Low standby current (<100 mA)

·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 ³100 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)

DYNAMIC 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).

SHORT-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 ms to see whether the short-circuit is still present. Due to this duty cycle of 50 ms/20 ms the average current consumption during this short-circuit condition is very low (approximately 40 mA).

handbook, halfpage VO	MGA705
0
V16
VP
0	t

Fig.3 Distortion detector waveform; BTL application.

handbook, halfpage	VO	MGA706
	0
	V16
	VP
	0	t

Fig.4 Distortion detector waveform; single-ended application.

1999 Jun 30

5

Philips Semiconductors

Product specification

2 × 24 W BTL or 4 × 12 W single-ended

TDA8561Q

car radio power amplifier

current

MGL214

in output stage

t

short-circuit over the load

V16

20 ms

VP

t

50 μs

Fig.5 Short-circuit waveform.

TEMPERATURE DETECTION

When the virtual junction temperature Tvj reaches 150 °C, pin 16 will be active LOW.

OPEN-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
vP	positive supply voltage
	operating		-	18	V
	non-operating		-	30	V
	load dump protection	during 50 ms; tr ³ 2.5 ms	-	45	V
IOSM	non-repetitive peak output current		-	6	A
IORM	repetitive peak output current		-	4	A
Tstg	storage temperature		-55	+150	°C
Tamb	operating ambient temperature		-40	+85	°C
Tvj	virtual junction temperature		-	150	°C
Vpsc	AC and DC short-circuit safe voltage		-	18	V
Vpr	reverse polarity		-	6	V
Ptot	total power dissipation		-	60	W

1999 Jun 30

6

Philips Semiconductors

Product specification

2 × 24 W BTL or 4 × 12 W single-ended

TDA8561Q

car radio power amplifier

THERMAL CHARACTERISTICS

In accordance with IEC 747-1.

SYMBOL	PARAMETER	VALUE	UNIT
Rth j-a	thermal resistance from junction to ambient in free air	40	K/W
Rth j-c	thermal resistance from junction to case (see Figs 6 and 7)	1.3	K/W

handbook, halfpage

virtual junction

output 1

output 2

output 3 output 4

handbook, halfpage

output 1

output 2

virtual junction

3.0 K/W

3.0 K/W

3.0 K/W

3.0 K/W

2.2 K/W

2.2 K/W

0.7 K/W

0.7 K/W

0.2 K/W

MEA861 - 1

MEA860 - 2

case

0.2 K/W

case

Fig.6 Equivalent thermal resistance network;

Fig.7 Equivalent thermal resistance network;

BTL application.

single-ended application.

1999 Jun 30

7

Philips Semiconductors

Product specification

2 × 24 W BTL or 4 × 12 W single-ended

TDA8561Q

car radio power amplifier

DC CHARACTERISTICS

VP = 14.4 V; Tamb = 25 °C; measured in Fig.8; unless otherwise specified.

SYMBOL		PARAMETER	CONDITIONS	MIN.	TYP.	MAX.	UNIT
Supply
VP		positive supply voltage	note 1	6	14.4	18	V
IP		total quiescent current		-	80	160	mA
VO		DC output voltage	note 2	-	6.9	-	V
ïDVOï		DC output offset voltage		-	-	150	mV
Mode select switch
Von		switch-on voltage level		8.5	-	-	V
MUTE CONDITION
Vmute		mute voltage		3.3	-	6.4	V
VO		output voltage in mute position	VImax = 1 V; f = 1 kHz	-	-	2	mV
ïDVOï		DC output offset voltage (between		-	-	150	mV
		pins 6 to 8 and 10 to 12)
STANDBY CONDITION
Vsb		standby voltage		0	-	2	V
Isb		standby current		-	-	100	mA
Isw		switch-on current		-	12	40	mA
Diagnostic output (pin 16)
VDIAG		diagnostic output voltage	any short-circuit or clipping	-	-	0.6	V

Notes

1.The circuit is DC adjusted at VP = 6 to 18 V and AC operating at VP = 8.5 to 18 V.

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

1999 Jun 30

8