NXP Semiconductors TDA8560Q User Manual

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INTEGRATED CIRCUITS

TDA8560Q

2 × 40 W/2 Ω stereo BTL car radio power amplifier with diagnostic facility

Product specification

1996 Jan 08

Supersedes data of March 1994

File under Integrated Circuits, IC01

Philips Semiconductors

Product specification

 

 

2 × 40 W/2 Ω stereo BTL car radio

TDA8560Q

power amplifier with diagnostic facility

FEATURES

·Requires very few external components

·High output power

·4 W and 2 W load impedance

·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

·Short-circuit safe to ground, 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.

GENERAL DESCRIPTION

The TDA8560Q is an integrated class-B output amplifier in a 13-lead single-in-line (SIL) power package.

It contains 2 ´ 40 W/2 W amplifiers in BTL configuration.

The device is primarily developed for car radio applications.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

 

 

 

 

 

 

 

 

VP

operating supply voltage

 

6.0

14.4

18

V

IORM

repetitive peak output current

 

-

-

7.5

A

Iq(tot)

total quiescent current

 

-

115

-

mA

Isb

standby current

 

-

0.1

100

mA

Isw

switch-on current

 

-

-

40

mA

ïZIï

input impedance

 

25

30

-

kW

Po

output power

RL = 4 W; THD = 10%

-

25

-

W

 

 

 

RL = 2 W; THD = 10%

-

40

-

W

SVRR

supply voltage ripple rejection

Rs = 0 W

-

45

-

dB

acs

channel separation

Rs = 10 kW

-

50

-

dB

Gv

closed loop voltage gain

 

39

40

41

dB

Vno

noise output voltage

Rs = 0 W

-

-

250

mV

ïDVOï

DC output offset voltage

 

-

-

200

mV

ORDERING INFORMATION

 

 

 

 

 

 

 

 

 

 

 

 

 

TYPE NUMBER

 

 

PACKAGE

 

 

 

 

 

 

 

 

 

 

 

NAME

 

DESCRIPTION

 

 

VERSION

 

 

 

 

 

 

 

 

TDA8560Q

DBS13P

plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)

SOT141-6

 

 

 

 

 

 

 

 

1996 Jan 08

2

Philips Semiconductors

Product specification

2 × 40 W/2 Ω stereo BTL car radio

TDA8560Q

power amplifier with diagnostic facility

BLOCK DIAGRAM

 

 

 

 

VP1

VP2

 

 

 

 

 

 

3

10

 

 

1

mute switch

Cm

 

 

 

 

 

input 1

 

 

 

 

 

 

 

 

 

 

TDA8560Q

 

 

 

VA

 

 

 

 

4

output 1A

 

 

 

 

 

 

 

365

 

 

 

 

 

 

 

Ω

 

 

 

 

 

 

 

18 kΩ

 

 

PROTECTIONS

 

 

 

 

power stage

Load dump

 

 

 

 

 

 

Soar

 

 

 

 

 

 

 

Thermal

 

 

 

 

mute switch

 

 

Short - circuit

 

 

 

Cm

 

Reverse polarity

 

 

 

VA

 

 

 

 

6

output 1B

30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

kΩ

365

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ω

 

 

 

 

 

 

 

18 kΩ

 

power stage

 

 

 

 

 

 

 

 

 

 

 

 

VP

 

 

 

 

 

 

 

 

 

 

 

 

11

mode switch

 

stand-by

 

 

 

 

 

 

 

 

 

 

 

 

 

switch

 

stand-by

 

 

 

 

 

 

 

 

 

 

 

 

 

 

reference

 

 

 

 

 

VA

 

voltage

 

 

 

 

 

15 kΩ

 

 

 

 

 

 

 

x1

 

mute

DIAGNOSTIC

12

diagnostic

 

 

 

 

 

 

switch

INTERFACE

 

output

 

15 kΩ

 

 

 

 

 

 

 

mute

 

 

 

 

 

 

 

reference

 

 

 

 

 

13

voltage

 

 

 

 

 

mute switch

Cm

 

 

 

 

 

input 2

 

 

 

 

 

 

VA

 

 

 

 

9

output 2B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

365

 

 

 

 

 

 

 

Ω

 

 

 

 

 

 

 

18 kΩ

 

power stage

 

 

 

 

 

 

 

 

 

 

 

 

mute switch

Cm

 

 

 

 

 

 

VA

 

 

 

 

7

output 2A

30

 

 

 

 

 

 

 

 

 

 

 

 

kΩ

365

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ω

 

 

 

 

 

 

input

18 kΩ

 

power stage

 

 

 

 

 

 

 

 

 

 

reference

 

 

 

 

 

 

 

 

 

 

 

 

 

voltage

 

 

 

 

 

 

 

 

2

5

8

 

 

 

 

 

 

GND1

GND2

 

MEA856 - 1

 

ground (signal)

power ground (substrate)

Fig.1 Block diagram.

1996 Jan 08

3

Philips Semiconductors

Product specification

2 × 40 W/2 Ω stereo BTL car radio

TDA8560Q

power amplifier with diagnostic facility

PINNING

SYMBOL

PIN

DESCRIPTION

 

 

 

IN 1

1

input 1

 

 

 

GND(S)

2

signal ground

 

 

 

VP1

3

supply voltage 1

OUT 1A

4

output 1A

 

 

 

GND1

5

power ground 1

 

 

 

OUT 1B

6

output 1B

 

 

 

OUT 2A

7

output 2A

 

 

 

GND2

8

power ground 2

 

 

 

OUT 2B

9

output 2B

 

 

 

VP2

10

supply voltage 2

MODE

11

mode switch input

 

 

 

VDIAG

12

diagnostic output

IN 2

13

input 2

 

 

 

IN 1

1

 

 

GND(S)

 

 

 

2

 

 

V P1

 

 

 

3

 

 

OUT 1A

 

 

 

4

 

 

GND1

 

 

 

5

 

 

OUT 1B

 

 

 

6

 

 

 

 

 

OUT 2A

7 TDA8560Q

GND2

 

 

 

8

 

 

OUT 2B

 

 

 

9

 

 

VP2

 

 

 

10

 

 

 

 

 

 

MODE

11

 

 

VDIAG 12 IN 2 13

MEA855 - 1

FUNCTIONAL DESCRIPTION

The TDA8560Q contains two identical amplifiers and can be used for bridge applications. The gain of each amplifier is fixed at 40 dB. Special features of the device are as follows.

Mode select switch (pin 11)

·Standby: low supply current (<100 mA)

·Mute: input signal suppressed

·Operating: normal on condition.

Since this pin has a very low input current (<40 mA), 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 ³100 ms (charging of the input capacitors at pin 1 and pin 13).

This can be achieved by:

·Microprocessor control

·External timing circuit (see Fig.7).

Diagnostic output (pin 12)

DYNAMIC DISTORTION DETECTOR (DDD)

At the onset of clipping of one or more output stages, the dynamic distortion detector becomes active and pin 12 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 12 is independent of the number of channels that are clipping (see Fig.3).

handbook, halfpageVO MGA721

0

V12

VP

0

t

Fig.2 Pin configuration.

Fig.3 Distortion detector waveform.

1996 Jan 08

4

Philips Semiconductors

Product specification

2 × 40 W/2 Ω stereo BTL car radio

TDA8560Q

power amplifier with diagnostic facility

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 12 is continuously low.

When a short-circuit across the load of one or both channels occurs the output stages are switched off during 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 12 is low for 20 ms and high for 50 μs (see Fig.4).

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

TEMPERATURE DETECTION

When the virtual junction temperature Tvj reaches 150 °C, pin 12 will become continuously low.

OPEN COLLECTOR OUTPUT

Pin 12 is an open collector output, which allows pin 12 of more devices being tied together.

andbook, full pagewidthcurrent

 

 

 

 

 

 

MGA722

in

 

 

 

 

 

 

 

output

 

 

 

 

 

 

 

stage

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t

short-circuit over the load

V12

20 ms

VP

t

50 μs

Fig.4 Short-circuit waveform.

1996 Jan 08

5

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