INTEGRATED CIRCUITS
DATA SHEET
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
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 V
P
and across the load
•
Low power dissipation in any short-circuit condition
QUICK REFERENCE DATA
SYMBOL
V
P
I
ORM
I
q(tot)
I
sb
I
sw
Z
I
P
o
SVRR
α
cs
G
v
V
no
∆V
O
PARAMETER
operating supply voltage
repetitive peak output current
total quiescent current
standby current
switch-on current
input impedance
output power
supply voltage ripple rejection
channel separation
closed loop voltage gain
noise output voltage
DC output offset voltage
R
s
= 0
Ω
R
L
= 4
Ω;
THD = 10%
R
L
= 2
Ω;
THD = 10%
R
s
= 0
Ω
R
s
= 10 kΩ
CONDITIONS
MIN.
6.0
−
−
−
−
25
−
−
−
−
39
−
−
TYP.
14.4
−
115
0.1
−
30
25
40
45
50
40
−
−
•
Thermally protected
•
Reverse polarity safe
•
Electrostatic discharge protection
•
No switch-on/switch-off plop
•
Flexible leads
•
Low thermal resistance.
GENERAL DESCRIPTION
TDA8560Q
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.
MAX.
18
7.5
−
100
40
−
−
−
−
−
41
250
200
UNIT
V
A
mA
µA
µA
kΩ
W
W
dB
dB
dB
µV
mV
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
TDA8560Q
DBS13P
DESCRIPTION
plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)
VERSION
SOT141-6
1996 Jan 08
2
Philips Semiconductors
Product specification
2
×
40 W/2
Ω
stereo BTL car radio
power amplifier with diagnostic facility
BLOCK DIAGRAM
V P1
3
input 1
1
mute switch
Cm
VP2
10
TDA8560Q
TDA8560Q
VA
365
Ω
18 kΩ
power stage
mute switch
4
output 1A
Cm
PROTECTIONS
Load dump
Soar
Thermal
Short - circuit
Reverse polarity
30
kΩ
365
Ω
VA
6
output 1B
18 kΩ
power stage
VP
11
stand-by
switch
VA
15 kΩ
x1
15 kΩ
mute
reference
voltage
mute switch
Cm
mute
switch
DIAGNOSTIC
INTERFACE
12
diagnostic
output
stand-by
reference
voltage
mode switch
input 2
13
VA
365
Ω
18 kΩ
power stage
mute switch
9
output 2B
Cm
30
kΩ
VA
365
Ω
18 kΩ
power stage
2
5
GND1
ground (signal)
power ground (substrate)
8
GND2
7
output 2A
input
reference
voltage
MEA856 - 1
Fig.1 Block diagram.
1996 Jan 08
3
Philips Semiconductors
Product specification
2
×
40 W/2
Ω
stereo BTL car radio
power amplifier with diagnostic facility
PINNING
SYMBOL
IN 1
GND(S)
V
P1
OUT 1A
GND1
OUT 1B
OUT 2A
GND2
OUT 2B
V
P2
MODE
V
DIAG
IN 2
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
DESCRIPTION
input 1
signal ground
supply voltage 1
output 1A
power ground 1
output 1B
output 2A
power ground 2
output 2B
supply voltage 2
mode switch input
diagnostic output
input 2
Mode select switch (pin 11)
FUNCTIONAL DESCRIPTION
TDA8560Q
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.
•
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).
Diagnostic output (pin 12)
D
YNAMIC DISTORTION DETECTOR
(DDD)
IN 1
GND(S)
V P1
OUT 1A
GND1
OUT 1B
OUT 2A
GND2
OUT 2B
1
2
3
4
5
6
7
8
9
TDA8560Q
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).
VP2 10
MODE 11
V DIAG 12
IN 2 13
MEA855 - 1
handbook, halfpage
VO
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
power amplifier with diagnostic facility
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 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).
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.
T
EMPERATURE DETECTION
When the virtual junction temperature T
vj
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.
handbook, full pagewidth
current
in
output
stage
MGA722
V12
VP
short-circuit over the load
20 ms
t
50
µ
s
t
Fig.4 Short-circuit waveform.
1996 Jan 08
5
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