Philips tda8560q DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
TDA8560Q
2 × 40 W/2 Ω stereo BTL car radio
power amplifier with diagnostic
facility
Product specification
Supersedes data of March 1994
File under Integrated Circuits, IC01
1996 Jan 08
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 Ω and 2 Ω 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
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
I
ORM
I
q(tot)
I
sb
I
sw
input impedance 25 30 − kΩ
Z
I
P
o
operating supply voltage 6.0 14.4 18 V
repetitive peak output current −−7.5 A
total quiescent current − 115 − mA
standby current − 0.1 100 µA
switch-on current −−40 µA
output power RL=4Ω; THD = 10% − 25 − W
SVRR supply voltage ripple rejection R
α
cs
G
v
V
no
DC output offset voltage −−200 mV
∆V
O
channel separation Rs=10kΩ−50 − dB
closed loop voltage gain 39 40 41 dB
noise output voltage Rs=0Ω−−250 µV
• 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 Ω amplifiers in BTL configuration.
The device is primarily developed for car radio
applications.
=2Ω; THD = 10% − 40 − W
R
L
=0Ω−45 − dB
s
ORDERING INFORMATION
TYPE NUMBER
TDA8560Q DBS13P plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm) SOT141-6
1996 Jan 08 2
PACKAGE
NAME DESCRIPTION VERSION
Philips Semiconductors Product specification
2 × 40 W/2 Ω stereo BTL car radio
power amplifier with diagnostic facility
BLOCK DIAGRAM
input 1
1
365
Ω
30
kΩ
365
Ω
stand-by
switch
18 kΩ
18 kΩ
VA
mute switch
VA
mute switch
VA
V
P
TDA8560Q
V
V
P1
3
C
m
TDA8560Q
PROTECTIONS
power stage
C
m
power stage
stand-by
reference
voltage
Load dump
Soar
Thermal
Short - circuit
Reverse polarity
P2
10
4
output 1A
6
output 1B
11
mode switch
input 2
13
30
kΩ
input
reference
voltage
15 kΩ
x1
15 kΩ
365
Ω
18 kΩ
VA
365
Ω
18 kΩ
258
ground (signal)
mute
reference
voltage
mute switchVAC
mute switch
C
GND1 GND2
power ground (substrate)
m
m
mute
switch
power stage
power stage
DIAGNOSTIC
INTERFACE
12 diagnostic
9
7
MEA856 - 1
output
output 2B
output 2A
1996 Jan 08 3
Fig.1 Block diagram.
Philips Semiconductors Product specification
2 × 40 W/2 Ω stereo BTL car radio
power amplifier with diagnostic facility
PINNING
SYMBOL PIN DESCRIPTION
IN 1 1 input 1
GND(S) 2 signal ground
V
P1
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
V
P2
MODE 11 mode switch input
V
DIAG
IN 2 13 input 2
3 supply voltage 1
10 supply voltage 2
12 diagnostic output
TDA8560Q
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 µA)
• Mute: input signal suppressed
• Operating: normal on condition.
Since this pin has a very low input current (<40 µA), 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 ≥100 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).
IN 1
GND(S)
V
P1
OUT 1A
GND1
OUT 1B
OUT 2A
GND2
OUT 2B
V
P2
MODE
V
DIAG
IN 2
1
2
3
4
5
6
7
8
9
10
11
12
13
TDA8560Q
MEA855 - 1
Diagnostic output (pin 12)
YNAMIC DISTORTION DETECTOR (DDD)
D
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, halfpage
V
O
0
V
12
V
P
0
MGA721
t
Fig.2 Pin configuration.
1996 Jan 08 4
Fig.3 Distortion detector waveform.
Philips Semiconductors Product specification
2 × 40 W/2 Ω stereo BTL car radio
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).
andbook, full pagewidth
current
in
output
stage
TDA8560Q
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.
O
PEN COLLECTOR OUTPUT
Pin 12 is an open collector output, which allows pin 12 of
more devices being tied together.
MGA722
V
12
V
P
short-circuit over the load
50 s
20 ms
µ
t
t
Fig.4 Short-circuit waveform.
1996 Jan 08 5
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