tda8560q, Ham- CB Radio, Karty katalogowe
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INTEGRATED CIRCUITS
DATA SHEET
stereo BTL car radio
power amplifier with diagnostic
facility
40 W/2
W
Product specification
Supersedes data of March 1994
File under Integrated Circuits, IC01
1996 Jan 08
TDA8560Q
2
´
Philips Semiconductors
Product specification
stereo BTL car radio
power amplifier with diagnostic facility
´
40 W/2
W
TDA8560Q
FEATURES
·
Thermally protected
·
Requires very few external components
·
Reverse polarity safe
·
High output power
·
Electrostatic discharge protection
·
4
W
and 2
W
load impedance
·
No switch-on/switch-off plop
·
Low output offset voltage
·
Flexible leads
·
Fixed gain
·
Low thermal resistance.
·
Diagnostic facility (distortion, short-circuit and
temperature detection)
GENERAL DESCRIPTION
·
Good ripple rejection
The TDA8560Q is an integrated class-B output amplifier in
a 13-lead single-in-line (SIL) power package.
It contains 2
·
Mode select switch (operating, mute and standby)
·
Load dump protection
´
40 W/2
W
amplifiers in BTL configuration.
·
Short-circuit safe to ground, to V
P
and across the load
The device is primarily developed for car radio
applications.
·
Low power dissipation in any short-circuit condition
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
V
P
operating supply voltage
6.0
14.4
18
V
I
ORM
repetitive peak output current
-
-
7.5
A
I
q(tot)
total quiescent current
-
115
-
mA
I
sb
standby current
-
0.1
100
m
A
I
sw
switch-on current
-
-
40
m
A
ï
Z
I
ï
input impedance
25
30
-
k
W
P
o
output power
R
L
=4
W
; THD = 10%
-
25
-
W
R
L
=2
W
; THD = 10%
-
40
-
W
SVRR
supply voltage ripple rejection
R
s
=0
W
-
45
-
dB
a
cs
channel separation
R
s
=10k
W
-
50
-
dB
G
v
closed loop voltage gain
39
40
41
dB
V
no
noise output voltage
R
s
=0
W
-
-
250
m
V
ïD
V
O
ï
DC output offset voltage
-
-
200
mV
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
DESCRIPTION
VERSION
TDA8560Q
DBS13P
plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)
SOT141-6
1996 Jan 08
2
2
Philips Semiconductors
Product specification
stereo BTL car radio
power amplifier with diagnostic facility
´
40 W/2
W
TDA8560Q
BLOCK DIAGRAM
V
P1
V
P2
3
10
input 1
1
mute switch
C
m
TDA8560Q
VA
4
output 1A
365
W
PROTECTIONS
Load dump
Soar
Thermal
Short - circuit
Reverse polarity
18 k
W
power stage
mute switch
C
m
VA
6
output 1B
30
k
W
365
W
18 k
W
power stage
V
P
11
mode switch
stand-by
switch
stand-by
reference
voltage
VA
15 k
W
x1
mute
switch
DIAGNOSTIC
INTERFACE
12
diagnostic
output
15 k
W
mute
reference
voltage
input 2
13
mute switch
C
m
VA
9
output 2B
365
W
18 k
W
power stage
mute switch
C
m
VA
7
output 2A
30
k
W
365
W
input
reference
voltage
18 k
W
power stage
2
5
8
GND1
GND2
MEA856 - 1
ground (signal)
power ground (substrate)
Fig.1 Block diagram.
1996 Jan 08
3
2
Philips Semiconductors
Product specification
stereo BTL car radio
power amplifier with diagnostic facility
´
40 W/2
W
TDA8560Q
PINNING
FUNCTIONAL DESCRIPTION
SYMBOL
PIN
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.
IN 1
1
input 1
GND(S)
2
signal ground
V
P1
3
supply voltage 1
Mode select switch (pin 11)
OUT 1A
4
output 1A
GND1
5
power ground 1
·
Standby: low supply current (
<
100
m
A)
OUT 1B
6
output 1B
Mute: input signal suppressed
·
Operating: normal on condition.
Since this pin has a very low input current (
OUT 2A
7
output 2A
GND2
8
power ground 2
<
40
m
A), a low
OUT 2B
9
output 2B
cost supply switch can be applied.
V
P2
10
supply voltage 2
To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during
³
100 ms (charging of the input
capacitors at pin 1 and pin 13).
MODE
11
mode switch input
V
DIAG
12
diagnostic output
IN 2
13
input 2
This can be achieved by:
·
Microprocessor control
·
External timing circuit (see Fig.7).
Diagnostic output (pin 12)
D
YNAMIC DISTORTION DETECTOR
(DDD)
IN 1
1
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).
GND(S)
2
V
P1
3
OUT 1A
4
GND1
5
OUT 1B
6
OUT 2A
7
TDA8560Q
GND2
8
OUT 2B
9
V
P2
10
handbook, halfpage
V
O
MGA721
MODE
11
0
V
DIAG
12
IN 2
13
V
12
V
P
MEA855 - 1
0
t
Fig.2 Pin configuration.
Fig.3 Distortion detector waveform.
1996 Jan 08
4
2
·
Philips Semiconductors
Product specification
stereo BTL car radio
power amplifier with diagnostic facility
´
40 W/2
W
TDA8560Q
S
HORT
-
CIRCUIT PROTECTION
During this short-circuit condition, pin 12 is low for 20 ms
and high for 50
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
m
s to see whether the short-circuit is still
present. Due to this duty cycle of 50
m
s/20 ms the average
current consumption during this short-circuit condition is
very low (approximately 40 mA).
m
s (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
t
short-circuit over the load
V
12
20 ms
V
P
m
50 s
t
Fig.4 Short-circuit waveform.
1996 Jan 08
5
2
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